Iceberg lettuce, raw
Checked by us One serving: 85 g · 12 kcal
Some vitamin K1.
Rinse it under running water: raw leafy greens can carry E. coli and Salmonella. Nothing else to watch for most people so far.
On warfarin? Keep your vitamin K steady. Worth knowing for some people: Listeria.
Good for
How we counted this
What one serving (85 g) gives you.
Your body needs enough of each of these. Past enough, more doesn’t help. Amounts are what the food databases list, not what your body absorbs, unless a row says it was measured.
The words: “A lot” means one serving gives 20% or more of Health Canada’s daily amount, “Some” 10% to 19%, “A little” 2% to 9%, “Almost none” under 2%. Strongest word first; within a word, protein and fibre lead, then the biggest share. ?
A milligram (mg) is a thousandth of a gram, and a microgram (µg) a thousandth of a milligram: 1,000 µg make 1 mg.
- Some
Vitamin K1
Your blood needs it to clot.
Learn more
20.5 µg in one serving: 17% of the 120 µg a day men need, 23% of the 90 µg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin K fact sheet for health professionals
21 more nutrients at a little or less
- A little
Folate
Your body needs it to make DNA and to divide new cells.
Learn more
24.7 µg in one serving: 6% of the 400 µg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, folate fact sheet for health professionals
- A little
Potassium
Your nerves, muscles and kidneys need it to work.
Learn more
120 mg in one serving: 4% of the 3,400 mg a day men need, 5% of the 2,600 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, potassium fact sheet for health professionals
- A little
Thiamin (B1)
Your cells use it to get energy from food, and so to grow and work.
Learn more
0.03 mg in one serving: 3% of the 1.2 mg a day men need, 3% of the 1.1 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, thiamin fact sheet for health professionals
- A little
Omega-3: ALA
The one omega-3 your body can’t make: it must come from food. Your cells build it into their membranes and burn it for energy.
Learn more
44.2 mg in one serving: 3% of the 1,600 mg a day men need, 4% of the 1,100 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, omega-3 fatty acids fact sheet for health professionals
- A little
Vitamin B6
Helps you use protein, and your brain needs it to make its chemical messengers.
Learn more
0.04 mg in one serving: 3% of the 1.3 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin B6 fact sheet for health professionals
- A little
Fibre
Keeps your gut moving.
Learn more
1.02 g in one serving: 3% of the 38 g a day men need, 4% of the 25 g women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. Institute of Medicine 2005, Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids
- A little
Vitamin C
Your body makes collagen with it, which wounds need to heal. It also helps you absorb iron from plants.
Learn more
2.38 mg in one serving: 3% of the 90 mg a day men need, 3% of the 75 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin C fact sheet for health professionals
- A little
Vitamin A
Your eyes need it to see in dim light.
Learn more
Getting enough matters; more than enough doesn’t sharpen your sight.
21.3 µg in one serving: 2% of the 900 µg a day men need, 3% of the 700 µg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin A fact sheet for health professionals
- A little
Iron
Carries oxygen in your blood.
Learn more
0.35 mg in one serving: 4% of the 8 mg a day men need, 2% of the 18 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, iron fact sheet for health professionals
- A little
Riboflavin (B2)
Your cells use it to make energy and handle fats. It also helps turn tryptophan into niacin and activate vitamin B6.
Learn more
0.02 mg in one serving: 2% of the 1.3 mg a day men need, 2% of the 1.1 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, riboflavin fact sheet for health professionals
- A little
Calcium
Builds your bones and teeth.
Learn more
15.3 mg in one serving: 2% of the 1,000 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, calcium fact sheet for health professionals
- Almost none
Magnesium
Your muscles and nerves need it to work.
Learn more
5.95 mg in one serving: 1% of the 400 mg a day men need, 2% of the 310 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, magnesium fact sheet for health professionals
- Almost none
Niacin (B3, niacin equivalents)
More than 400 of your enzymes need it to work.
Learn more
0.23 mg in one serving: 1% of the 16 mg a day men need, 2% of the 14 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, niacin fact sheet for health professionals
- Almost none
Protein
Your muscles, and every other tissue, are built and repaired from it.
Learn more
0.77 g in one serving: 1% of the 56 g a day men need, 2% of the 46 g women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. Institute of Medicine 2005, Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids
- Almost none
Zinc
Your immune system and healing wounds depend on it.
Learn more
0.13 mg in one serving: 1% of the 11 mg a day men need, 2% of the 8 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, zinc fact sheet for health professionals
- Almost none
Choline
Your cells need it for their membranes, and to make acetylcholine, a messenger for memory, mood and muscle control.
Learn more
5.7 mg in one serving: 1% of the 550 mg a day men need, 1% of the 425 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, choline fact sheet for health professionals
- Almost none
Vitamin E
Shields the fats in your cells from damage; your immune system uses it too.
Learn more
0.15 mg in one serving: 1% of the 15 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin E fact sheet for health professionals
- Almost none
Selenium
Your thyroid uses it to make its hormones.
Learn more
0.09 µg in one serving: under 1% of the 55 µg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, selenium fact sheet for health professionals
- Almost none
Omega-3: EPA + DHA
Long-chain omega-3s, built into your cell membranes. DHA is concentrated in your brain and retinas.
Learn more
0 mg in one serving: under 1% of the 250 mg a day.
Health Canada sets no daily amount for these fats, so the daily figure here is the European Food Safety Authority’s.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, omega-3 fatty acids fact sheet for health professionals
- Almost none
Vitamin B12
Your body needs it to make red blood cells and keep nerves working.
Learn more
0 µg in one serving: under 1% of the 2.4 µg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin B12 fact sheet for health professionals
- Almost none
Vitamin D
Your body needs it to absorb calcium and keep your bones hard.
Learn more
Your skin also makes it in sunlight, so food is only one of its sources.
0 µg in one serving: under 1% of the 15 µg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin D fact sheet for health professionals
How to handle it
Rinse leaves under cool running water, with water only; don’t soak them in a sink full of water. Bagged ready-to-eat greens labelled washed don’t need rewashing. Wash the board and tools with warm, soapy water before and after, and keep them apart from raw meat.
Source: Health Canada, Food safety tips for leafy green vegetables
How we got this
Flagged for handling, not dose: in October 2008 CFIA's advisory named iceberg lettuce as the believed common link in a US E. coli O157:H7 outbreak, chopped shredded iceberg from a Michigan exporter had been imported into Ontario, and two Ontario illnesses shared the outbreak's PFGE pattern, though the notice calls the food link possible, not established. CFIA's routine surveys find it rarely: 0 of 3,310 unsatisfactory in whole leafy vegetables 2020-24, not split by lettuce type.
Watch out
How we counted this
How to handle it, just above: Rinse it well
Cadmium
Nothing to watchYou’d need about 1.3 servings a day, every day, of this food alone to use up what an average adult’s intake leaves under the limit.
Learn more
One serving carries 5.49 µg (85 g × 64.6 µg/kg)
How we got this
A serving a day adds 31% to what an average adult already takes in: a share of that intake, not of the limit. With that serving every day, an average adult would be at about 93% of the limit.
An average adult already takes in about 71% of the limit. One serving a day fits in the room left.
Counted from zero, with no allowance for what adults already take in from other food, 2,700 g a week would reach the limit.
Why this rating: Eating it daily comes to 595 g a week, which stays within the 790 g of room left before the limit.
The dataset’s rating: Nothing to watch: under the limit
A daily serving adds 31% to an average adult's cadmium intake (EFSA 2012 adult median, 1.77 µg/kg body weight/week; Canadian adults in 2007: 1.2-1.75), far from doubling it, so no cap.
Checked for nickel, aluminum and lead: fine at normal amounts.
Nickel
Nothing to watchYou’d need about 67 servings in a day of this food alone to use up what the highest average adult intake we found leaves under the limit.
Learn more
One serving carries 9.97 µg (85 g × 0.1173 µg/g)
How we got this
The highest average adult intake we found already takes up about 26% of the limit. One serving a day fits in the room left.
Counted from zero, with no allowance for what adults already take in from other food, 7,800 g a day would reach the limit.
Why this rating: Eating it daily comes to 85 g a day, which stays within the 5,700 g of room left before the limit.
The dataset’s rating: Nothing to watch: under the limit
No cap: EFSA's 2020 tolerable daily intake for nickel is 13 µg/kg body weight/day, 910 µg/day for 70 kg. The CFIA lower-bound mean for imported head lettuce is 0.1173 µg/g (158 samples, 149 positive), so about 7,758 g a day, eaten alone, would reach it; a serving is 1.1% of the limit. FDA's raw iceberg mean is lower, 80 µg/kg (17 of 27 detected).
Aluminum
Nothing to watchYou’d need more than 100 servings a day, every day, of this food alone to reach the limit.
Learn more
One serving carries 79.6 µg (85 g × 0.936 µg/g)
How we got this
75,000 g a week reaches the limit
The dataset’s rating: Nothing to watch: under the limit
No cap: EFSA's 2008 tolerable weekly intake for aluminium is 1 mg/kg body weight/week, 70,000 µg/week for 70 kg. The CFIA lower-bound mean for imported head lettuce is 0.936 µg/g (158 samples, 138 positive), so about 74,800 g a week, eaten alone, would reach it; a daily serving (595 g a week) is 0.8% of the limit.
Lead
Nothing to watchYou’d need about 100 servings a day, every day, of this food alone to double the lead an average adult already gets. No dose is known to be safe, so doubling is where we flag.
Learn more
A serving a day adds 1% to what an average adult already takes in. There is no limit to take a share of.
One serving carries 0.36 µg (85 g × 4.25 µg/kg)
How we got this
The dataset’s rating: Nothing to watch: doesn’t double average intake
No cap: no safe level of lead is set. The CFIA lower-bound mean for imported head lettuce is 4.25 µg/kg (158 samples, 78.5% non-detects; maximum 249.5 µg/kg), so an 85 g serving carries 0.36 µg, about 1.0–2.6% of an average adult's daily lead intake (13.6 to 37.5 µg/day), far from doubling it. FDA found none in 27 raw iceberg samples (reporting limit 4 µg/kg).
For some people
Flagged for fresh-cut and bagged lettuce, not a whole head: Listeria is a matter of handling, not dose, and no agency publishes a dose basis for lettuce. CFIA's targeted surveys found 9 unsatisfactory results, all Listeria monocytogenes, in 2,488 fresh-cut ready-to-eat leafy salads (0.36%); whole leafy vegetables were not tested for Listeria, and the surveys do not split by lettuce type.
Flagged for people on warfarin: keep vitamin K intake consistent; the label does not say avoid. One 85 g serving of iceberg carries 20.5 µg, 23% of the adequate intake for women (90 µg/day) and 17% for men (120), about a quarter of romaine's 70.9 µg per serving.
Learn more
Eat a steady amount, not none. This line goes on every food whose serving gives 10% or more of the daily vitamin K; a few foods below that carry it too, where a source names them. One serving here has about 20 µg of vitamin K1.
Worth knowing
No limit applies, so none is rated.
Sugar
1.7 g of sugar in a 85 g serving, natural and added together.
Learn more
Shown, not rated. The food tables we read give total sugar, and few give added sugar, so the site can’t yet tell sugar added in making a food from the sugar in fruit or milk.
Also checked (nothing to act on) · 4
Noted for context, or not measured in this food yet.
Measured in this food, not rated yet. Not rated: total arsenic, not inorganic; no health-based limit applies to total arsenic.
Not measured in this food yet. Not rated: histamine was not detected in 4 lettuce samples (Spanish market products), but the detection limit is not stated, and a non-detect gives no concentration, so no amount of lettuce can be set against the 50 mg per meal level.
Shown as context, not rated: EFSA's acceptable daily intake for nitrate is 3.7 mg/kg body weight/day, 259 mg a day. Iceberg averages 875 mg/kg (1,980 European samples, below-detection values counted at the detection limit; P95 1,537), so about 296 g a day, eaten alone, would reach it; one serving is 28.7% of the limit (50% at the P95 value).
Context only (legal limits are never scored): 334 of 728 screens carried at least one residue (46%: domestic 33%, imports 49%); the annex lines record no violation.
Better options
How we counted this
“Better” here always means better at something the row names: more of one nutrient, more nutrients per serving, or the goal you pick. It never means better in every way.
Every amount below is for the same weight, 85 g, the size of one serving of this food, so a swap compares like with like. A serving of another food can be bigger or smaller.
A food is listed only if it gives clearly more: at least a fifth more than this food, and at least 10% of the daily amount more.
More of what it’s good for
More vitamin K1
Kale, cooked355 µg in 85 g (this food: 20.5 µg)
Turnip greens, cooked312 µg in 85 g (this food: 20.5 µg)
Amounts as listed, not adjusted for how much gets in.
More nutrients per serving, counted together
The other vegetables we’ve checked with more nutrients per serving than this one, counting at most 100 kcal. One score ranks them all, so the same few often lead.
- Turnip greens, cooked
- More vitamin K1 (312 µg vs 20.5 µg)
- More vitamin A (324 µg vs 21.3 µg)
- More vitamin C (23.3 mg vs 2.38 mg)
- Kale, cooked
- More vitamin K1 (355 µg vs 20.5 µg)
- More omega-3: ALA (286 mg vs 44.2 mg)
- More vitamin C (15.1 mg vs 2.38 mg)
Brussels sprouts, cooked- More vitamin K1 (119 µg vs 20.5 µg)
- More vitamin C (52.7 mg vs 2.38 mg)
Where the calcium card measured that less calcium gets in than from milk, calcium counts for less; everything else is as listed.
Your goal
Your goal changes only this list, not what the food gives you or what to watch.
Losing weight: fewer calories, and more nutrients, protein and fibre for each calorie.
Asparagus, cooked- More folate (127 µg vs 24.7 µg)
- More vitamin K1 (43 µg vs 20.5 µg)
- Turnip greens, cooked
- More vitamin K1 (312 µg vs 20.5 µg)
- More vitamin A (324 µg vs 21.3 µg)
- More vitamin C (23.3 mg vs 2.38 mg)
Broccoli, cooked- More vitamin K1 (74.9 µg vs 20.5 µg)
- More vitamin C (34.1 mg vs 2.38 mg)
Building muscle: more protein and more calories, per 100 g. In a typical diet most protein comes from other foods; among vegetables, these help most.
Green peas, cooked5.2 g protein · 78 kcal per 100 g- Broccoli, cooked3.1 g protein · 28 kcal per 100 g
- Kale, cooked2.9 g protein · 36 kcal per 100 g
Why some foods aren’t suggested
Left out: Mustard greens, cooked (not tested for contaminants yet).
Left out: Spinach, cooked (Cadmium: go easy · lots of oxalate, more than its own calcium can bind).
Left out: Edamame, cooked (not tested for contaminants yet).
Bring a tracker export or describe your usual week. The same rules check all of it.
The numbers
Open every value
Name in the database: Lettuce, iceberg, raw
How the serving was set: 85 g fresh (Health Canada TRA V.1 'Vegetables without sauce ... lettuce, all varieties including blends'; household measure '# cups (85 g)')
Listed nutrients, per 100 g
For each nutrient, the value this page uses is marked “used”. A row marked “second database” is another database’s figure for a matching food, kept so you can see how far databases disagree (they can differ in the samples analysed, lab methods and rounding). Its own cells are worked out from it, but none of the page’s words or scores are.
| Nutrient | Per serving | Per 100 calories | How | Source | Grade | |
|---|---|---|---|---|---|---|
| Omega-3: ALA | 0.052 g | 0.04 g | 0.37 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Calcium | 18 mg | 15.3 mg | 128.57 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| 18 mg | 15.3 mg | 128.57 mg | copy of USDA · not used | Canadian Nutrient File 2026 #2398 | C | |
| Carbohydrate | 2.97 g | 2.52 g | 21.21 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Choline | 6.7 mg | 5.7 mg | 47.86 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Energy | 14 kcal | 11.9 kcal | – | FDC Energy (kcal) used | US food database (USDA SR Legacy) | – |
| Omega-3: EPA + DHA | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fat | 0.14 g | 0.12 g | 1 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Cholesterol | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fatty acids, total saturated | 0.018 g | 0.02 g | 0.13 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fibre | 1.2 g | 1.02 g | 8.57 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Folate | 29 µg | 24.65 µg | 207.14 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Iron | 0.41 mg | 0.35 mg | 2.93 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Magnesium | 7 mg | 5.95 mg | 50 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Niacin (B3, niacin equivalents) | 0.273 mg | 0.23 mg | 1.95 mg | listed used | Canadian Nutrient File 2026 #2398 | C |
| Phosphorus | 20 mg | 17 mg | 142.86 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Potassium | 141 mg | 119.85 mg | 1,007.14 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Protein | 0.9 g | 0.77 g | 6.43 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Riboflavin (B2) | 0.025 mg | 0.02 mg | 0.18 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Selenium | 0.1 µg | 0.09 µg | 0.71 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Sodium | 10 mg | 8.5 mg | 71.43 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Sugars | 1.97 g | 1.67 g | 14.07 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Thiamin (B1) | 0.041 mg | 0.03 mg | 0.29 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin A | 25 µg | 21.25 µg | 178.57 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin B12 | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin B6 | 0.042 mg | 0.04 mg | 0.3 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin C | 2.8 mg | 2.38 mg | 20 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin D | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin E | 0.18 mg | 0.15 mg | 1.29 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin K1 | 24.1 µg | 20.49 µg | 172.14 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Water | 95.64 g | 81.29 g | 683.14 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Zinc | 0.15 mg | 0.13 mg | 1.07 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Nutrient | Per 100 g | Per serving | Per 100 calories | How | Source | Grade |
|---|---|---|---|---|---|---|
| Beta-carotene | 299 µg | 254.15 µg | 2,135.71 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Copper | 0.025 mg | 0.02 mg | 0.18 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Ash | 0.36 g | 0.31 g | 2.57 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Sucrose | 0.05 g | 0.04 g | 0.36 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Glucose | 0.91 g | 0.77 g | 6.5 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fructose | 1 g | 0.85 g | 7.14 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Maltose | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Alcohol, ethyl | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Caffeine | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Theobromine | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Energy | 58 kj | 49.3 kj | 414.29 kj | listed used | US food database (USDA SR Legacy) #169248 | C |
| Galactose | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin A, IU | 502 iu | 426.7 iu | 3,585.71 iu | listed used | US food database (USDA SR Legacy) #169248 | C |
| Carotene, alpha | 4 µg | 3.4 µg | 28.57 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin D (D2 + D3), International Units | 0 iu | 0 iu | 0 iu | listed used | US food database (USDA SR Legacy) #169248 | C |
| Cryptoxanthin, beta | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Lycopene | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocopherol, beta | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocopherol, gamma | 0.09 mg | 0.08 mg | 0.64 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocopherol, delta | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocotrienol, alpha | 0.01 mg | 0.01 mg | 0.07 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocotrienol, beta | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocotrienol, gamma | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tocotrienol, delta | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin K (Dihydrophylloquinone) | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Folic acid | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Folate, food | 29 µg | 24.65 µg | 207.14 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Folate, DFE | 29 µg | 24.65 µg | 207.14 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Betaine | 0.1 mg | 0.09 mg | 0.71 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tryptophan | 0.009 g | 0.01 g | 0.06 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Threonine | 0.025 g | 0.02 g | 0.18 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Isoleucine | 0.018 g | 0.02 g | 0.13 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Leucine | 0.025 g | 0.02 g | 0.18 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Lysine | 0.024 g | 0.02 g | 0.17 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Methionine | 0.005 g | 0 g | 0.04 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Cystine | 0.005 g | 0 g | 0.04 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Phenylalanine | 0.023 g | 0.02 g | 0.16 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Tyrosine | 0.007 g | 0.01 g | 0.05 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Valine | 0.024 g | 0.02 g | 0.17 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Arginine | 0.015 g | 0.01 g | 0.11 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Histidine | 0.009 g | 0.01 g | 0.06 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Alanine | 0.025 g | 0.02 g | 0.18 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Aspartic acid | 0.125 g | 0.11 g | 0.89 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Glutamic acid | 0.194 g | 0.16 g | 1.39 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Glycine | 0.015 g | 0.01 g | 0.11 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Proline | 0.01 g | 0.01 g | 0.07 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Serine | 0.025 g | 0.02 g | 0.18 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin E, added | 0 mg | 0 mg | 0 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Vitamin B-12, added | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fatty acids, total trans | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 4:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 6:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 8:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 10:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 12:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 14:0 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 16:0 | 0.016 g | 0.01 g | 0.11 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| SFA 18:0 | 0.002 g | 0 g | 0.01 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| MUFA 18:1 | 0.004 g | 0 g | 0.03 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 18:2 | 0.021 g | 0.02 g | 0.15 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 18:3 | 0.052 g | 0.04 g | 0.37 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 20:4 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 22:6 n-3 (DHA) | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| MUFA 16:1 | 0.001 g | 0 g | 0.01 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 18:4 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| MUFA 20:1 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 20:5 n-3 (EPA) | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| MUFA 22:1 | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| PUFA 22:5 n-3 (DPA) | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Phytosterols | 10 mg | 8.5 mg | 71.43 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fatty acids, total monounsaturated | 0.006 g | 0.01 g | 0.04 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Fatty acids, total polyunsaturated | 0.074 g | 0.06 g | 0.53 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Lactose | 0 g | 0 g | 0 g | listed used | US food database (USDA SR Legacy) #169248 | C |
| Lutein + zeaxanthin | 277 µg | 235.45 µg | 1,978.57 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Manganese | 0.125 mg | 0.11 mg | 0.89 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Niacin (B3, preformed) | 0.123 mg | 0.1 mg | 0.88 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Pantothenic acid (B5) | 0.091 mg | 0.08 mg | 0.65 mg | listed used | US food database (USDA SR Legacy) #169248 | C |
| Retinol | 0 µg | 0 µg | 0 µg | listed used | US food database (USDA SR Legacy) #169248 | C |
Change the amount to rescale the first column. Nutrients a database doesn't list are missing, not zero.
Hazard rows as the dataset rates them
- Aluminum · Nothing to watch: under the limit · No cap: EFSA's 2008 tolerable weekly intake for aluminium is 1 mg/kg body weight/week, 70,000 µg/week for 70 kg. The CFIA lower-bound mean for imported head lettuce is 0.936 µg/g (158 samples, 138 positive), so about 74,800 g a week, eaten alone, would reach it; a daily serving (595 g a week) is 0.8% of the limit. · CFIA chemical residue monitoring (2016–2023) · B
- Arsenic, all forms · Not rated yet · Not rated: total arsenic, not inorganic; no health-based limit applies to total arsenic. · CFIA chemical residue monitoring (2016–2023) · B
- Cadmium · Nothing to watch: under the limit · A daily serving adds 31% to an average adult's cadmium intake (EFSA 2012 adult median, 1.77 µg/kg body weight/week; Canadian adults in 2007: 1.2-1.75), far from doubling it, so no cap. · CFIA chemical residue monitoring (2016–2023) · B
- E. coli (STEC) on raw produce · Worth knowing · Flagged for handling, not dose: in October 2008 CFIA's advisory named iceberg lettuce as the believed common link in a US E. coli O157:H7 outbreak, chopped shredded iceberg from a Michigan exporter had been imported into Ontario, and two Ontario illnesses shared the outbreak's PFGE pattern, though the notice calls the food link possible, not established. CFIA's routine surveys find it rarely: 0 of 3,310 unsatisfactory in whole leafy vegetables 2020-24, not split by lettuce type. · CFIA 2008 · A
- Histamine · Not rated yet · Not rated: histamine was not detected in 4 lettuce samples (Spanish market products), but the detection limit is not stated, and a non-detect gives no concentration, so no amount of lettuce can be set against the 50 mg per meal level. · DOI 10.3390/foods7120205 · A
- Lead · Nothing to watch: doesn’t double average intake · No cap: no safe level of lead is set. The CFIA lower-bound mean for imported head lettuce is 4.25 µg/kg (158 samples, 78.5% non-detects; maximum 249.5 µg/kg), so an 85 g serving carries 0.36 µg, about 1.0–2.6% of an average adult's daily lead intake (13.6 to 37.5 µg/day), far from doubling it. FDA found none in 27 raw iceberg samples (reporting limit 4 µg/kg). · CFIA chemical residue monitoring (2016–2023) · B
- Listeria · Worth knowing · Flagged for fresh-cut and bagged lettuce, not a whole head: Listeria is a matter of handling, not dose, and no agency publishes a dose basis for lettuce. CFIA's targeted surveys found 9 unsatisfactory results, all Listeria monocytogenes, in 2,488 fresh-cut ready-to-eat leafy salads (0.36%); whole leafy vegetables were not tested for Listeria, and the surveys do not split by lettuce type. · CFIA 2020 · A
- Nickel · Nothing to watch: under the limit · No cap: EFSA's 2020 tolerable daily intake for nickel is 13 µg/kg body weight/day, 910 µg/day for 70 kg. The CFIA lower-bound mean for imported head lettuce is 0.1173 µg/g (158 samples, 149 positive), so about 7,758 g a day, eaten alone, would reach it; a serving is 1.1% of the limit. FDA's raw iceberg mean is lower, 80 µg/kg (17 of 27 detected). · CFIA chemical residue monitoring (2016–2023) · B
- Nitrate · Context · Shown as context, not rated: EFSA's acceptable daily intake for nitrate is 3.7 mg/kg body weight/day, 259 mg a day. Iceberg averages 875 mg/kg (1,980 European samples, below-detection values counted at the detection limit; P95 1,537), so about 296 g a day, eaten alone, would reach it; one serving is 28.7% of the limit (50% at the P95 value). · EFSA 2008 · A
- Pesticide residues · Context · Context only (legal limits are never scored): 334 of 728 screens carried at least one residue (46%: domestic 33%, imports 49%); the annex lines record no violation. · CFIA chemical residue monitoring (2016–2023) · A
- Salmonella · Worth knowing · Flagged as a handling matter, not a dose: Health Canada names Salmonella and E. coli as the bacteria linked to contaminated leafy greens and advises washing with water only; bagged greens labelled washed need no rewash. The surveys do not split by lettuce type. · CFIA 2020 · A
- Vitamin K and warfarin · Worth knowing · Flagged for people on warfarin: keep vitamin K intake consistent; the label does not say avoid. One 85 g serving of iceberg carries 20.5 µg, 23% of the adequate intake for women (90 µg/day) and 17% for men (120), about a quarter of romaine's 70.9 µg per serving. · US food database (USDA SR Legacy) · C
Sources
- Canadian Food Inspection Agency, advice to consumers: outbreak of E. coli O157:H7 in the United States, related cases in Ontario (4 October 2008; chopped shredded iceberg lettuce from a Michigan exporter)
cfia-2008-ecoli-iceberg-notice· secondary source · Government of Canada terms (Crown copyright) - CFIA, Food microbiology - Targeted surveys - Interim report (data as of 2024-03-31), Table 4 (hot peppers line)
cfia-micro-targeted-2020-24· full text read · Open Government Licence - Canada - CFIA, National Chemical Residue Monitoring Program, Annex B results summaries 2016-17 to 2022-23, Table B-1 domestic and B-2 imported (open.canada.ca datasets 95a14ca0, c87af563, a2ea8989, 9e5211c8, a5cb7c3c, 6567ac46, cf149850); positives-only means, no detection limits stated; pooled by us
cfia-ncrmp-annex-b-2016-2023· dataset · Government of Canada terms (Crown copyright) - Health Canada, Canadian Nutrient File 2026 (14th edition)
cnf-2026· dataset · Open Government Licence – Canada 2.0 - Sanchez-Perez S et al. Biogenic amines in plant-origin foods: are they frequently underestimated in low-histamine diets? Foods 2018;7(12):205. · doi:10.3390/foods7120205
doi:10.3390/foods7120205· full text read · licence not recorded - EFSA CONTAM Panel (2008) Nitrate in vegetables. EFSA Journal 689 · doi:10.2903/j.efsa.2008.689
efsa-2008-nitrate· full text read · EFSA Journal: CC BY-ND 4.0 - USDA FoodData Central, SR Legacy, 2018-04
fdc-sr-legacy-2018-04· dataset · CC0 1.0 (public domain)
Body map 2026-10-25.1: each nutrient’s job comes from an agency fact sheet, linked beside it under Good for.
The plain words: “a lot” means one serving (100 g when the food has no serving size) gives at least 20% of the daily amount (the reference intake), “some” at least 10%, “a little” at least 2% (the cut-offs are ours, one set for every page: 20% and 10% are borrowed from the US labelling terms “high” and “good source” and applied to Health Canada’s daily amount, whereas Health Canada’s own shopper rule says 15%; provisional: they may change in a later method version). The daily amount is Health Canada’s Dietary Reference Intake for adults 19–30; where men and women need different amounts we use the higher one (protein: 56 g for men, 46 g for women). The percentage printed under each nutrient is the printed amount as a share of that daily amount, rounded to the nearest whole number, and the word is read from that percentage, so the amount, the percentage and the word always agree. Calcium with a measured absorption is scaled by how well it gets in compared with milk.
The scale: “Nothing to watch” means a serving a day stays under the limit at ordinary amounts; “Go easy” means a serving a day can push past the limit for adults who already take in the most, or fewer than 2 servings reach it; “Limit it” means once a week or less. The dataset’s own rating is under “How we got this”. Provisional: the scale may change in a later method version.
Measured absorption under Good for: grade-A studies in adults that tested this preparation of this food, as a share of the listed amount (the share digested, for protein), quoted once each source has passed our evidence check; animal studies and other variants stay in the table above. Provisional: this screen may change in a later method version.