Avocados for weight loss

Avocado weight loss research

Do avocados actually help you lose weight?

Start with the biggest study. In the Habitual Diet and Avocado Trial, 1,008 adults with an elevated waist circumference were split into two groups for 6 months. One ate a large avocado every day and the other kept eating as usual. The main measure was visceral fat, the deep belly fat, read by MRI. There was no significant difference between the groups, and body weight changed about the same in both.

That might sound discouraging, but look at what else happened. Each of those avocados carried about 280 calories, according to the trial report, and the avocado group still didn't gain more weight. The authors took that to mean avocados at least partly replaced other food. Total and LDL cholesterol came down modestly, and a follow-up analysis of the same trial found diet quality scores rose 4.74 points more in the avocado group, though that rise didn't predict better heart risk markers.

So avocados aren't a fat loss shortcut. They're a good food that works when they replace something worse, not when you pile them on top of what you're already eating.

The cholesterol research points the same way, in a smaller setting. A controlled feeding trial of 45 adults with overweight or obesity tested three cholesterol-lowering diets for 5 weeks each. LDL fell 13.5 mg/dL on the diet with one Hass avocado a day, against 8.3 on a matched diet using high oleic oils and 7.4 on a lower-fat diet. A second paper from that same trial reported lower oxidized LDL. Two papers, one group of 45 people, so treat it as a promising signal.

There's a fullness argument too. In a crossover meal test of 26 adults with overweight, adding about half a Hass avocado to lunch raised satisfaction by 23% and cut the desire to eat by 28% over the next 5 hours. The caveat is in the paper itself: that lunch carried 112 more calories, which may explain the result. People also ate about the same at dinner, so no calories were saved later.

Population studies add a little more. Among 17,567 US adults, the 347 who reported eating avocado had better diet quality, lower body weight and smaller waists. Correlation isn't causation. People who eat avocados probably make other healthy choices too. The takeaway isn't that avocados shrink waists, it's that they fit well into an overall pattern that does.

Worth knowing: the Hass Avocado Board funded all of the avocado studies above, and the trial papers say the board had no access to the data or no role in the analysis. That doesn't make the results wrong. It's a good reason to weigh them against the largest trial, which didn't flatter the fruit.

This lines up with the American Heart Association's 2021 dietary guidance, which recommends replacing saturated fats with unsaturated fats, like those in avocado, within a calorie-appropriate eating pattern. For a full breakdown of which foods support weight loss and why, see our guide to the 100 best foods for weight loss.

How to use avocados for weight loss

How do you use avocado without adding calories?

Swap, don't stack. This is the most important principle. Replace butter, cheese or mayo with avocado on toast, grain bowls, tacos or sandwiches. You keep the creamy texture and swap out saturated fat, and the meal's total calories stay about the same or drop. A tablespoon of mayo or butter runs about 100 calories, roughly what 60 grams of avocado costs you.

• Pair it with protein and fiber. Avocado on its own won't keep you full for long. Combine it with eggs, chicken, fish, beans or tofu to build a meal that lasts. Our complete meal prep guide shows how to build those meals ahead of time.
• Portion smart. Start with 50 to 100 grams, about one-third to two-thirds of a medium Hass avocado, then adjust to your daily calorie goal. That's about 80 to 160 calories. Track loosely for a week to calibrate your eye. Our calorie goal guide can help you set the target.
• Watch what's under it. Guacamole is great, and a mountain of tortilla chips is a separate decision. If you're dipping, use vegetable sticks or a small portion of whole-grain crackers. If you're spreading, choose whole-grain toast over white bread.
• Make it easy on yourself. Most portion mistakes happen when you're tired and hungry, and that's when you're eyeballing it.

Avocado serving sizes, calories & macros

How many calories are in a serving of avocado?

Here's what you're working with per 100 grams of raw avocado, per USDA FoodData Central: about 160 calories, 15 grams of fat (mostly monounsaturated), 8.5 grams of carbs, 6.7 grams of fiber and about 2 grams of protein.

Avocado portions, calculated from USDA FoodData Central values per 100 g

Avocado sizes vary quite a bit. The half avocado in the lunch study averaged 75 grams, and the one a day in the feeding trial weighed 136 grams, so it's worth measuring once or twice to learn what your typical half actually weighs.

Despite the creamy feel, Hass avocado flesh is about 72% water. That puts it in the medium energy-density range, at about 1.6 to 1.7 calories per gram. That's higher than watery fruits like oranges or watermelon, and much lower than nuts, oils or cheese. It's not a free food, but it's not as calorie-packed as it feels.

Putting avocados into a weight loss plan

What should you do next with avocados?

Avocado toast is the obvious place to start, because it's easy to measure and easy to overdo. Build it with whole-grain bread, 50 to 100 grams of avocado and an egg or smoked salmon. Then decide what comes off the plate to make room, and count the avocado against your daily target.

If you already know what to eat and the trouble is doing it on a Wednesday night, that's a workload problem. Pre-portioned meals remove the daily decisions about portions and calories, which is one reason meal delivery can help with weight loss. Our Weight Loss Meal Plan sets the calories for you, and our nutrition info page lists the macros for every meal. You can still add your own avocado, as a swap.

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This post is educational and isn't medical advice. If you're managing cholesterol, a medical condition or a prescribed diet, talk with your doctor or a registered dietitian before making big changes.