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  6. Red leaf lettuce vs. Sweet onion

Red leaf lettuce vs. Sweet onion — In-Depth Nutrition Comparison

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Differences between Red leaf lettuce and Sweet onion

  • Sweet onion contains less Vitamin K, Vitamin A RAE, Iron, and Manganese than Red leaf lettuce.
  • Red leaf lettuce's daily need coverage for Vitamin K is 117% higher.
  • The amount of Sugar in Red leaf lettuce is lower.

The food types used in this comparison are Lettuce, red leaf, raw and Onions, sweet, raw.

Infographic

Red leaf lettuce vs Sweet onion infographic
Infographic link

Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Red leaf lettuce
Red leaf lettuce
8
:
2
Sweet onion
Sweet onion
Contains more Calcium +65%
Contains more Iron +361.5%
Contains more Magnesium +33.3%
Contains more Potassium +57.1%
Contains more Zinc +53.8%
Contains more Manganese +167.1%
Contains more Selenium +200%
Contains less Sodium -68%
Contains more Copper +100%
Equal in Phosphorus - 27
Red leaf lettuce
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 10% 45% 9% 12% 17% 4% 6% 10% 27% 9%
Sweet onion
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 6% 10% 7% 12% 11% 2% 4% 19% 10% 3%
Contains more Calcium +65%
Contains more Iron +361.5%
Contains more Magnesium +33.3%
Contains more Potassium +57.1%
Contains more Zinc +53.8%
Contains more Manganese +167.1%
Contains more Selenium +200%
Contains less Sodium -68%
Contains more Copper +100%
Equal in Phosphorus - 27

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Red leaf lettuce
Red leaf lettuce
9
:
2
Sweet onion
Sweet onion
Contains more Vitamin A +749100%
Contains more Vitamin E +650%
Contains more Vitamin B1 +56.1%
Contains more Vitamin B2 +285%
Contains more Vitamin B3 +141.4%
Contains more Vitamin B5 +46.9%
Contains more Folate +56.5%
Contains more Vitamin K +46666.7%
Contains more Vitamin C +29.7%
Contains more Vitamin B6 +30%
Red leaf lettuce
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 450% 3% 0% 13% 16% 18% 7% 9% 24% 27% 0% 351%
Sweet onion
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 1% 1% 0% 16% 11% 5% 3% 6% 30% 18% 0% 1%
Contains more Vitamin A +749100%
Contains more Vitamin E +650%
Contains more Vitamin B1 +56.1%
Contains more Vitamin B2 +285%
Contains more Vitamin B3 +141.4%
Contains more Vitamin B5 +46.9%
Contains more Folate +56.5%
Contains more Vitamin K +46666.7%
Contains more Vitamin C +29.7%
Contains more Vitamin B6 +30%

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Red leaf lettuce
Red leaf lettuce
4
:
1
Sweet onion
Sweet onion
Contains more Protein +66.3%
Contains more Fats +175%
Contains more Other +66.7%
Contains more Carbs +234.1%
Equal in Water - 91.24
Red leaf lettuce
2% 96%
Protein: 1.33 g
Fats: 0.22 g
Carbs: 2.26 g
Water: 95.64 g
Other: 0.55 g
Sweet onion
8% 91%
Protein: 0.8 g
Fats: 0.08 g
Carbs: 7.55 g
Water: 91.24 g
Other: 0.33 g
Contains more Protein +66.3%
Contains more Fats +175%
Contains more Other +66.7%
Contains more Carbs +234.1%
Equal in Water - 91.24

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Red leaf lettuce
Red leaf lettuce
0
:
4
Sweet onion
Sweet onion
Contains more Sucrose +∞%
Contains more Glucose +1030%
Contains more Fructose +621.4%
Contains more Lactose +∞%
Red leaf lettuce
42% 58%
Starch: 0 g
Sucrose: 0 g
Glucose: 0.2 g
Fructose: 0.28 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Sweet onion
14% 45% 40%
Starch: 0 g
Sucrose: 0.72 g
Glucose: 2.26 g
Fructose: 2.02 g
Lactose: 0.02 g
Maltose: 0 g
Galactose: 0 g
Contains more Sucrose +∞%
Contains more Glucose +1030%
Contains more Fructose +621.4%
Contains more Lactose +∞%

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Red leaf lettuce Sweet onion
Lower in Sodium ok
Lower in Saturated Fat ok
Lower in Sugar ok
Rich in minerals ok
Rich in vitamins ok
Lower in Cholesterol Equal
Lower in Glycemic Index Equal
Lower in price Equal

All nutrients comparison - raw data values

Nutrient Red leaf lettuce Sweet onion Opinion
Net carbs 1.36g 6.65g Sweet onion
Protein 1.33g 0.8g Red leaf lettuce
Fats 0.22g 0.08g Red leaf lettuce
Carbs 2.26g 7.55g Sweet onion
Calories 16kcal 32kcal Sweet onion
Fructose 0.28g 2.02g Sweet onion
Sugar 0.48g 5.02g Red leaf lettuce
Fiber 0.9g 0.9g
Calcium 33mg 20mg Red leaf lettuce
Iron 1.2mg 0.26mg Red leaf lettuce
Magnesium 12mg 9mg Red leaf lettuce
Phosphorus 28mg 27mg Red leaf lettuce
Potassium 187mg 119mg Red leaf lettuce
Sodium 25mg 8mg Sweet onion
Zinc 0.2mg 0.13mg Red leaf lettuce
Copper 0.028mg 0.056mg Sweet onion
Manganese 0.203mg 0.076mg Red leaf lettuce
Selenium 1.5µg 0.5µg Red leaf lettuce
Vitamin A 7492IU 1IU Red leaf lettuce
Vitamin A RAE 375µg 0µg Red leaf lettuce
Vitamin E 0.15mg 0.02mg Red leaf lettuce
Vitamin C 3.7mg 4.8mg Sweet onion
Vitamin B1 0.064mg 0.041mg Red leaf lettuce
Vitamin B2 0.077mg 0.02mg Red leaf lettuce
Vitamin B3 0.321mg 0.133mg Red leaf lettuce
Vitamin B5 0.144mg 0.098mg Red leaf lettuce
Vitamin B6 0.1mg 0.13mg Sweet onion
Folate 36µg 23µg Red leaf lettuce
Vitamin K 140.3µg 0.3µg Red leaf lettuce
Tryptophan 0.022mg 0.009mg Red leaf lettuce
Threonine 0.048mg 0.018mg Red leaf lettuce
Isoleucine 0.038mg 0.014mg Red leaf lettuce
Leucine 0.07mg 0.025mg Red leaf lettuce
Lysine 0.045mg 0.033mg Red leaf lettuce
Methionine 0.016mg 0.009mg Red leaf lettuce
Phenylalanine 0.067mg 0.024mg Red leaf lettuce
Valine 0.048mg 0.02mg Red leaf lettuce
Histidine 0.019mg 0.011mg Red leaf lettuce
Saturated Fat 0.017g Sweet onion
Monounsaturated Fat 0.005g Red leaf lettuce
Polyunsaturated fat 0.072g Red leaf lettuce

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Red leaf lettuce Sweet onion
Low Fats diet ok
Low Carbs diet ok
Low Calories diet ok
Low Glycemic Index diet Equal

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Vitamins & Minerals Daily Need Coverage Score

The summary scores indicate the extent to which this food can fulfill your daily vitamin and mineral requirements if you consume 3 servings, consisting of 100 grams of each (an approximation of 3 serving sizes).
Vitamins Daily Need Coverage Score
76%
Red leaf lettuce
7%
Sweet onion
Minerals Daily Need Coverage Score
14%
Red leaf lettuce
8%
Sweet onion

Comparison summary

Which food contains less Sodium?
Sweet onion
Sweet onion contains less Sodium (difference - 17mg)
Which food is lower in Saturated Fat?
Sweet onion
Sweet onion is lower in Saturated Fat (difference - 0.017g)
Which food is lower in Sugar?
Red leaf lettuce
Red leaf lettuce is lower in Sugar (difference - 4.54g)
Which food is richer in minerals?
Red leaf lettuce
Red leaf lettuce is relatively richer in minerals
Which food is richer in vitamins?
Red leaf lettuce
Red leaf lettuce is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)
Which food is lower in glycemic index?
?
The foods have equal glycemic indexes ()
Which food is cheaper?
?
The foods are relatively equal in price ($)

References

All the values for which the sources are not specified explicitly are taken from FDA’s Food Central. The exact link to the food presented on this page can be found below.

  1. Red leaf lettuce - https://fdc.nal.usda.gov/fdc-app.html#/food-details/168431/nutrients
  2. Sweet onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170008/nutrients

All the Daily Values are presented for males aged 31-50, for 2000-calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.