How many calories are there in an avocado?

A medium avocado contains about 50 calories per ounce, or 250 calories total. About 35 of these 50 calories come from fat, most of which is monounsaturated and can help lower cholesterol.

In addition to offering monounsaturated fat, avocados also contain nearly 20 kinds of vitamins and minerals, including potassium, lutein, folate and vitamins B, C and E. The fruit is best consumed when the outside skin is black or dark purple and yields to light pressure. People who have a severe allergy to latex should consult their doctors before eating avocados, as such people often have an adverse reaction after eating the fruit.