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Avocado vs. Onion — In-Depth Nutrition Comparison

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How are avocadoes and onions different?

  • Avocadoes have more vitamin B5, fiber, vitamin K, copper, folate, vitamin E, vitamin B6, vitamin B3, and potassium than onions.
  • Daily need coverage for vitamin B5 for avocadoes is 25% higher.
  • Avocadoes contain 104 times more vitamin E than onions. While avocadoes contain 2.07mg of vitamin E, onions contain only 0.02mg.
  • Onions have less saturated fat.
  • Onions have a lower glycemic index (15) than avocadoes (40).

Avocados, raw, all commercial varieties and Onions, raw are the varieties used in this article.

Infographic

Avocado vs Onion infographic
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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.
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 21% 3.6% 43% 21% 63% 17% 22% 0.91% 19% 2.2%
Onion
3
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 7.1% 6.9% 13% 7.9% 13% 4.6% 12% 0.52% 17% 2.7%
Contains more MagnesiumMagnesium +190%
Contains more PotassiumPotassium +232.2%
Contains more IronIron +161.9%
Contains more CopperCopper +387.2%
Contains more ZincZinc +276.5%
Contains more PhosphorusPhosphorus +79.3%
Contains more CalciumCalcium +91.7%
Contains less SodiumSodium -42.9%
Contains more SeleniumSelenium +25%
~equal in Manganese ~0.129mg

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.
Avocado
11
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 33% 2.3% 41% 0% 17% 30% 33% 83% 59% 0% 53% 61% 7.7%
Onion
0
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 25% 0% 0.4% 0% 12% 6.2% 2.2% 7.4% 28% 0% 1% 14% 3.3%
Contains more Vitamin CVitamin C +35.1%
Contains more Vitamin AVitamin A +∞%
Contains more Vitamin EVitamin E +10250%
Contains more Vitamin B1Vitamin B1 +45.7%
Contains more Vitamin B2Vitamin B2 +381.5%
Contains more Vitamin B3Vitamin B3 +1398.3%
Contains more Vitamin B5Vitamin B5 +1029.3%
Contains more Vitamin B6Vitamin B6 +114.2%
Contains more Vitamin KVitamin K +5150%
Contains more FolateFolate +326.3%
Contains more CholineCholine +132.8%
~equal in Vitamin D ~0µg
~equal in Vitamin B12 ~0µg

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
2% 15% 9% 73%
Protein: 2 g
Fats: 14.66 g
Carbs: 8.53 g
Water: 73.23 g
Other: 1.58 g
Onion
2
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
Contains more ProteinProtein +81.8%
Contains more FatsFats +14560%
Contains more OtherOther +351.4%
Contains more WaterWater +21.7%
~equal in Carbs ~9.34g

Fat Type Comparison

Fat type breakdown side-by-side comparison
15% 71% 13%
Saturated fat: Sat. Fat 2.126 g
Monounsaturated fat: Mono. Fat 9.799 g
Polyunsaturated fat: Poly. Fat 1.816 g
Onion
1
58% 18% 24%
Saturated fat: Sat. Fat 0.042 g
Monounsaturated fat: Mono. Fat 0.013 g
Polyunsaturated fat: Poly. Fat 0.017 g
Contains more Mono. FatMonounsaturated fat +75276.9%
Contains more Poly. FatPolyunsaturated fat +10582.4%
Contains less Sat. FatSaturated fat -98%

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
14% 8% 49% 16% 13%
Starch: 0.11 g
Sucrose: 0.06 g
Glucose: 0.37 g
Fructose: 0.12 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0.1 g
Onion
3
23% 46% 30%
Starch: 0 g
Sucrose: 0.99 g
Glucose: 1.97 g
Fructose: 1.29 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Contains more StarchStarch +∞%
Contains more GalactoseGalactose +∞%
Contains more SucroseSucrose +1550%
Contains more GlucoseGlucose +432.4%
Contains more FructoseFructose +975%
~equal in Lactose ~0g
~equal in Maltose ~0g

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Avocado Onion
Lower in Sodium ok
Lower in Saturated fat ok
Lower in Glycemic Index ok
Lower in price ok
Lower in Sugar ok
Rich in minerals ok
Rich in vitamins ok
Lower in Cholesterol Equal

All nutrients comparison - raw data values

Nutrient Avocado Onion DV% diff.
Vitamin B5 1.389mg 0.123mg 25%
Monounsaturated fat 9.799g 0.013g 24%
Fats 14.66g 0.1g 22%
Fiber 6.7g 1.7g 20%
Vitamin K 21µg 0.4µg 17%
Copper 0.19mg 0.039mg 17%
Folate 81µg 19µg 16%
Vitamin E 2.07mg 0.02mg 14%
Polyunsaturated fat 1.816g 0.017g 12%
Vitamin B6 0.257mg 0.12mg 11%
Potassium 485mg 146mg 10%
Vitamin B3 1.738mg 0.116mg 10%
Saturated fat 2.126g 0.042g 9%
Vitamin B2 0.13mg 0.027mg 8%
Calories 160kcal 40kcal 6%
Magnesium 29mg 10mg 5%
Iron 0.55mg 0.21mg 4%
Zinc 0.64mg 0.17mg 4%
Phosphorus 52mg 29mg 3%
Vitamin C 10mg 7.4mg 3%
Vitamin B1 0.067mg 0.046mg 2%
Protein 2g 1.1g 2%
Choline 14.2mg 6.1mg 1%
Vitamin A 7µg 0µg 1%
Fructose 0.12g 1.29g 1%
Manganese 0.142mg 0.129mg 1%
Calcium 12mg 23mg 1%
Net carbs 1.83g 7.64g N/A
Carbs 8.53g 9.34g 0%
Sugar 0.66g 4.24g N/A
Starch 0.11g 0g 0%
Sodium 7mg 4mg 0%
Selenium 0.4µg 0.5µg 0%
Tryptophan 0.025mg 0.014mg 0%
Threonine 0.073mg 0.021mg 0%
Isoleucine 0.084mg 0.014mg 0%
Leucine 0.143mg 0.025mg 0%
Lysine 0.132mg 0.039mg 0%
Methionine 0.038mg 0.002mg 0%
Phenylalanine 0.097mg 0.025mg 0%
Valine 0.107mg 0.021mg 0%
Histidine 0.049mg 0.014mg 0%
Omega-3 - ALA 0.111g N/A
Omega-6 - Gamma-linoleic acid 0.015g N/A

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Avocado Onion
Low Calories diet ok
Low Fats diet ok
Low Carbs diet ok
Low Glycemic Index diet ok

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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
32%
Avocado
8%
Onion
Minerals Daily Need Coverage Score
21%
Avocado
8%
Onion

Comparison summary

Which food contains less Sodium?
Onion
Onion contains less Sodium (difference - 3mg)
Which food is lower in Saturated fat?
Onion
Onion is lower in Saturated fat (difference - 2.084g)
Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 25)
Which food is cheaper?
Onion
Onion is cheaper (difference - $0.6)
Which food is lower in Sugar?
Avocado
Avocado is lower in Sugar (difference - 3.58g)
Which food is richer in minerals?
Avocado
Avocado is relatively richer in minerals
Which food is richer in vitamins?
Avocado
Avocado is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)

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. Avocado - https://fdc.nal.usda.gov/fdc-app.html#/food-details/171705/nutrients
  2. Onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/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.