A protein-sparing modified fast (PSMF) calculator, often attributed to Lyle McDonald, is a tool used to estimate macronutrient targets, specifically protein, carbohydrates, and fats, for individuals following a PSMF dietary approach. This approach typically involves a very low-calorie, high-protein diet designed for rapid weight loss. These calculators usually require inputs like body weight, body fat percentage, and activity level to generate personalized recommendations.
Utilizing such a tool can be beneficial for individuals seeking to adhere to a PSMF protocol safely and effectively. Precise macronutrient calculations are crucial in preserving lean body mass while maximizing fat loss during periods of caloric restriction. Historically, PSMF protocols have been utilized under medical supervision for weight management in specific populations. The rise of online resources has made these calculators more accessible, though professional guidance remains advisable.
