CRON-diet

The CRON-diet is a nutrient-rich, reduced calorie diet developed by Roy Walford, Lisa Walford, and Brian M. Delaney. The CRON-diet involves calorie restriction in the hope that the practice will improve and delay aging, while still attempting to provide daily amounts of various nutrients. Other names include CR-diet, Longevity diet, and Anti-Aging Plan. The Walfords and Delaney, among others, founded the CR Society International to promote the CRON-diet.

The CRON-diet was developed by Walford compiled during his participation in Biosphere 2.

Proponents of the CRON-diet believe that everyone has what they call a “set-point”: a weight, specific to an individual, Proponents believe that the set-point is determined by heredity and childhood eating habits. Proponents recommend that adherents remain 10-25% under their set-point, suggesting that this is necessary for the diet to be maximally effective. A guideline that is used to determine an individual’s set-point is to measure that person’s body fat content. Proponents state that this should be 10-15% for females and 6-10% for males. Proponents suggest the use of skinfold test tools, some digital scales, densiometry, and / or bioelectrical impedance analysis to determine the body fat content. Proponents then use the current weight and body fat content to determine the target weight (below the set point), and plan and follow a preliminary diet until the goal is reached. Next, the proponent determines the level of caloric restriction they wish to implement in their regular eating pattern. Proponents recommend a goal of restricting intake by 20%. The actual daily dose of the basal metabolic rate (BMR). A common daily intake is 1800 calories per day. the proponent determines the level of caloric restriction they wish to implement in their regular eating pattern. Proponents recommend a goal of restricting intake by 20%. The actual daily dose of the basal metabolic rate (BMR). A common daily intake is 1800 calories per day. the proponent determines the level of caloric restriction they wish to implement in their regular eating pattern. Proponents recommend a goal of restricting intake by 20%. The actual daily dose of the basal metabolic rate (BMR). A common daily intake is 1800 calories per day.

The Walfords offers three meals in their book, but variation is possible. Calorie-dense and calorie-lean foods can be used in many different ways. Proponents also use “supplements”, which refers to vitamin pills and some high-nutrition foods (which are necessarily calorie-lean). The Walfords describes these foods as “nutrient superchargers”; examples include kombu, yeast brewers, wheat bran, wheat germ, shiitake mushrooms, non-fat dry milk, soybeans, and tofu. These “nutrient superchargers” are used frequently to boost meals’ nutritional density. The Walfords proposes that members eat three meals per day. They suggest that members cook eight meals on a specific day of the week, and then freeze these meals to use during the whole week. They refer to this process as “Quantity-Cook-and-Freeze Option”, and the meals themselves as “One-a-day MegaMeals”. They suggest that they use two “Free-Choice Recipes” for the other two courses per day. Adherents may compose their own meals. The Walfords guarantee that these meals must be exactly and contain all the required RDA nutrients. Dr. Walfords Interactive Diet Planner and the unofficial CRON-o-Meter. for the other two courses per day. Adherents may compose their own meals. The Walfords guarantee that these meals must be exactly and contain all the required RDA nutrients. Dr. Walfords Interactive Diet Planner and the unofficial CRON-o-Meter. for the other two courses per day. Adherents may compose their own meals. The Walfords guarantee that these meals must be exactly and contain all the required RDA nutrients. Dr. Walfords Interactive Diet Planner and the unofficial CRON-o-Meter.

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