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  6. Sweet onion vs. Red leaf lettuce

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

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Differences between Sweet onion and Red leaf lettuce

  • 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.
  • Red leaf lettuce contains 10 times less Sugar than Sweet onion. Sweet onion contains 5.02g of Sugar, while Red leaf lettuce contains 0.48g.

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

Infographic

Sweet onion vs Red leaf lettuce 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.
Sweet onion
Sweet onion
2
:
8
Red leaf lettuce
Red leaf lettuce
Contains less Sodium -68%
Contains more Copper +100%
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%
Equal in Phosphorus - 28
Sweet onion
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 6% 10% 7% 12% 11% 2% 4% 19% 10% 3%
Red leaf lettuce
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 10% 45% 9% 12% 17% 4% 6% 10% 27% 9%
Contains less Sodium -68%
Contains more Copper +100%
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%
Equal in Phosphorus - 28

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.
Sweet onion
Sweet onion
2
:
9
Red leaf lettuce
Red leaf lettuce
Contains more Vitamin C +29.7%
Contains more Vitamin B6 +30%
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%
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%
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%
Contains more Vitamin C +29.7%
Contains more Vitamin B6 +30%
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%

Macronutrient Comparison

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

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Sweet onion
Sweet onion
4
:
0
Red leaf lettuce
Red leaf lettuce
Contains more Sucrose +∞%
Contains more Glucose +1030%
Contains more Fructose +621.4%
Contains more Lactose +∞%
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
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
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.
Sweet onion Red leaf lettuce
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 Sweet onion Red leaf lettuce Opinion
Net carbs 6.65g 1.36g Sweet onion
Protein 0.8g 1.33g Red leaf lettuce
Fats 0.08g 0.22g Red leaf lettuce
Carbs 7.55g 2.26g Sweet onion
Calories 32kcal 16kcal Sweet onion
Fructose 2.02g 0.28g Sweet onion
Sugar 5.02g 0.48g Red leaf lettuce
Fiber 0.9g 0.9g
Calcium 20mg 33mg Red leaf lettuce
Iron 0.26mg 1.2mg Red leaf lettuce
Magnesium 9mg 12mg Red leaf lettuce
Phosphorus 27mg 28mg Red leaf lettuce
Potassium 119mg 187mg Red leaf lettuce
Sodium 8mg 25mg Sweet onion
Zinc 0.13mg 0.2mg Red leaf lettuce
Copper 0.056mg 0.028mg Sweet onion
Manganese 0.076mg 0.203mg Red leaf lettuce
Selenium 0.5µg 1.5µg Red leaf lettuce
Vitamin A 1IU 7492IU Red leaf lettuce
Vitamin A RAE 0µg 375µg Red leaf lettuce
Vitamin E 0.02mg 0.15mg Red leaf lettuce
Vitamin C 4.8mg 3.7mg Sweet onion
Vitamin B1 0.041mg 0.064mg Red leaf lettuce
Vitamin B2 0.02mg 0.077mg Red leaf lettuce
Vitamin B3 0.133mg 0.321mg Red leaf lettuce
Vitamin B5 0.098mg 0.144mg Red leaf lettuce
Vitamin B6 0.13mg 0.1mg Sweet onion
Folate 23µg 36µg Red leaf lettuce
Vitamin K 0.3µg 140.3µg Red leaf lettuce
Tryptophan 0.009mg 0.022mg Red leaf lettuce
Threonine 0.018mg 0.048mg Red leaf lettuce
Isoleucine 0.014mg 0.038mg Red leaf lettuce
Leucine 0.025mg 0.07mg Red leaf lettuce
Lysine 0.033mg 0.045mg Red leaf lettuce
Methionine 0.009mg 0.016mg Red leaf lettuce
Phenylalanine 0.024mg 0.067mg Red leaf lettuce
Valine 0.02mg 0.048mg Red leaf lettuce
Histidine 0.011mg 0.019mg 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
Sweet onion Red leaf lettuce
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
7%
Sweet onion
76%
Red leaf lettuce
Minerals Daily Need Coverage Score
8%
Sweet onion
14%
Red leaf lettuce

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