Mountain Impulse wrote:There is a body of medical literature pointing to the proposition that significant calorie restriction (I would say under a thousand calories for most adults is significant) increases longevity. However, most people, especially in fast food nations like the US of A, could come nowhere near tolerating such calorie restriction. Naturally, great calorie restriction will limit the physical activity you can do comfortably or at all. No Iron Man triathlons on 950 calories per day!
Having a reduced calorie intake has been shown to increase longevity as long as it is not to the point where it disrupts the hormonal and immune system. Saying that a significant portion of the USA needs such restrictions is a misnomer. Although 33%+ of the US is recognized as obese or morbidly obese by the Center for Disease Control (CDC) and has resulted in a spike in diabetes, we can not forget the significant fraction of the female population, and climbers, runners, high school and collegiate wrestlers, gymnists who have eating disorders, both bulemia and anorexia. Both disorders is significant and have resulted in deaths from heart failure and heart attacks (metabolic ion imbalances is very disruptive to cardiac function)- (check how many <35yr old actresses have died recently due to heart attacks)