Kimberly Snyder, C.N., takes a measured stance, noting that “eating some fat is essential for beauty and health, but you don’t need to overdo it. If you look at some of the people around the world with the best health and longest lives, including various cultures in Asia, you’ll see that many of them favor plant foods with lower fat and protein consumption. Exactly how much avocado (and fat in general) you should consume in a day depends on your body type, general constitution, activity levels, and so on, so there is not a one-size-fits-all recommendation. As a guideline, 15 to 30 percent of your diet should come from whole food sources of fat, including avocado and other healthy fats, like nutrient-dense seeds and nuts. Assuming you are eating some seeds and nuts and utilizing some coconut oil for cooking, a half to a whole avocado a day is a good general amount.”