Protein Sparing Modified Fast

The Protein-Sparing Modified Fast, or PSMF, is a total fast modified by the intake of a bare minimum of protein, fluids, vitamins, and mineral supplementation.

PSMF was designed in the late 1970s as a diet for a rapid weight loss for the morbidly obese. PSMF is a type of very low calorie diet with dehydration being a health concern, hence fluids, vitamin and mineral (potassium, magnesium, sodium, and calcium) supplementation is mandatory and doctor's supervision is recommended. PSMF diets consist of foods that are naturally rich in good-quality protein and particularly extremely low in fats (chicken breast, extra lean beef, tuna, egg white, ham, cottage cheese)