From World’s Healthiest Foods:
Recent research on avocado and heart disease risk has revealed some important health benefits that may be unique to this food. Avocado’s reputation as a high-fat food is entirely accurate. Our 1-cup website serving provides 22 grams of fat, and those 22 grams account for 82% of avocado’s total calories. And they do not necessarily provide a favorable ratio of omega-3 to omega-6 fat; you get less than 1/4 gram of omega-3s from one serving of avocado and 2.5 grams of omega-6s, for a ratio of 10:1 in favor of omega-6s. However, despite these characteristics, the addition of avocado to already well-balanced diets has been shown to lower risk of heart disease, improve blood levels of LDL, and lower levels of oxidative stress in the bloodstream following consumption of food. In one particular research study, participants in two groups all consumed a diet with the same overall balance, including 34% fat in both groups. But one avocado per day was included in the meal plan of only one group, and that was the group with the best heart-related results in terms of blood fat levels.