Eric Reem, of Harvard University's Nutrition Department, identified the perfect amount of 6-finger fried potatoes, describing them as timed bombs.
The article, published in The New York Times, sparked controversy among fries, but the medical community agrees with Reem to avoid heart disease and stroke.
Dr Reem's advice is partly based on a recent study published in the American Journal of Nutrition by Italian researchers who found that people who avoided fried potatoes lived six months longer than those who did not care about the high-calorie meal.
People who ate potatoes two or three times a week were more likely to develop diabetes, obesity and cardiovascular disease, the study found.
The fingers of the fried potatoes contain high calories as a result of high amounts of cooking oil, as well as a high percentage of carbohydrates, which together lead to high fat in the body and thus increase the chance of heart disease.