Quick answer (TL;DR): One medium avocado (about 136 g of flesh) has roughly 220 to 230 calories, about 9 g of fiber and 650 to 700 mg of potassium. In trials, eating avocado in place of saturated fat was linked to modestly lower LDL cholesterol. A third to half an avocado is a sensible portion for most people; a whole one can fit if it replaces other fats rather than adding to them.
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What is in one avocado?
This fruit is unusual: most of its calories come from fat, and most of that fat is monounsaturated (about two-thirds of the total, the same main type found in olive oil). The figures below are USDA reference values for the raw fruit. Varieties differ, so treat them as approximate.
| Nutrient | Per 100 g | One medium avocado (about 136 g flesh) |
|---|---|---|
| Calories | about 160 kcal | about 220 to 230 kcal |
| Total fat | 14.7 g | about 20 g |
| Monounsaturated fat | 9.8 g | about 13 g |
| Fiber | 6.7 g | about 9 g |
| Potassium | 485 to 507 mg | about 650 to 700 mg |
| Folate | 81 mcg DFE | about 110 mcg DFE |
| Lutein and zeaxanthin | 271 mcg | about 370 mcg |
For comparison, a medium banana has roughly 420 mg of potassium, so avocado does contain more.
Does avocado help lower cholesterol?
It may help a little, mainly when it replaces saturated fat. In a controlled feeding trial of 45 overweight or obese adults, a moderate-fat diet with one Hass fruit (136 g) a day lowered LDL cholesterol by 13.5 mg/dL, compared with 8.3 mg/dL on a similar diet without it and 7.4 mg/dL on a lower-fat diet. That trial was small and received funding from the Hass Avocado Board.
A later randomized trial of adults with abdominal obesity found that eating one a day led to only a slight drop in LDL (about 2.5 mg/dL). So the effect appears modest, and it is one part of a heart-healthy pattern rather than a treatment for high cholesterol.
Is avocado good for blood pressure?
The fruit supplies potassium, a mineral that is part of balanced eating patterns linked to healthy blood pressure. Evidence that it lowers blood pressure on its own is limited, so think of it as a useful contributor, not a fix. If you have kidney disease or take medicine that raises potassium, ask your doctor before eating it often (see the safety section below).
Does the fiber in avocado help with fullness?
One medium fruit gives about 9 g of fiber, which supports digestion. Fiber and fat can make a meal more filling for many people. In the 2022 trial above, a daily serving did not lead to weight gain, but it also did not cause weight loss, so it is not a weight-loss food by itself.
For more everyday fiber sources, see our post on eating more fruits and vegetables.
Does avocado help your body absorb nutrients from other foods?
Vitamins A, D, E and K, and plant pigments called carotenoids, are fat-soluble, which means the body absorbs them better when some fat is eaten at the same meal. Adding slices to a vegetable salad is one tasty way to provide that fat. Olive oil, nuts or seeds work as well.
Is avocado good for your eyes?
It contains lutein and zeaxanthin, pigments found in the eye. A whole fruit provides a modest amount (about 370 mcg), and leafy greens such as spinach are much richer sources. It can be one part of an eye-friendly diet, but it should not be the main source.
Is avocado a good source of folate in pregnancy?
One medium fruit provides about 110 mcg DFE of folate, roughly a quarter of the 400 mcg Daily Value. Folate is important in early pregnancy for the development of the baby's brain and spine. Health authorities advise women who could become pregnant to ask a doctor or midwife about folic acid supplements, because food alone may not be enough. It can add to your folate intake, but it does not replace that advice or antenatal care.
How much avocado should you eat?
The standard serving on US food labels is one third of a medium fruit. Trials have used one whole fruit a day, usually as a swap for other fats, not as an addition. A practical approach for most adults:
- Start with one third to one half of a fruit a day.
- Use it instead of butter, mayonnaise or cream, not on top of them.
- Eat more if your calorie needs are high, and less if you are managing your weight.
For help with overall balance, see our nutrition tips and our guide to sustainable weight management.
Who should be careful with avocado?
- Kidney disease or a low-potassium diet: ask your doctor or dietitian how much is safe for you.
- Latex allergy: some people with latex allergy also react to it. Itching or swelling of the mouth or lips after eating it is a reason to speak to a doctor.
- Get urgent medical help if you have difficulty breathing, swelling of the face or throat, or widespread hives after eating any food.
- Pregnancy, breastfeeding, long-term conditions, or regular medicines: it is a normal food for most people, but talk to a doctor first if you have been given specific diet advice.
Frequently Asked Questions
Is it OK to eat avocado every day?
For most people, yes. A third to half an avocado a day fits well into a healthy diet. Keep the calories in mind if you are watching your weight, and check with your doctor if you have kidney disease or a latex allergy.
Are avocados good for weight loss?
Not by themselves. Avocado is filling and a randomized trial found that a daily avocado did not cause weight gain, but it also did not cause weight loss. It is calorie-dense, so portions still matter.
What is the healthiest way to eat avocado?
Fresh, with simple additions, such as on whole-grain bread, in a salad or in a smoothie. Preparations loaded with cheese, bacon or deep-frying add saturated fat and calories.
How do I know when an avocado is ripe?
A ripe avocado yields gently when you press it with the palm of your hand. Avoid pressing with your fingertips, which bruises the flesh. Buy firm fruit and let it ripen at home; a paper bag with a banana can speed this up.
Sources
- Hass avocado composition and nutrient values (review, PMC)
- Wang et al., Journal of the American Heart Association, 2015: moderate-fat diet with and without avocados
- American Heart Association News: An avocado a day may help keep bad cholesterol at bay
- Summary of Lichtenstein et al., Journal of the American Heart Association, 2022: one avocado per day and visceral fat
General information only, not medical, healthcare, or psychological advice. Check current medical guidelines with a certified physician or licensed healthcare provider before acting on anything published here. Never disregard professional medical advice or delay seeking it because of something you read on this site.
