The Prolon Fasting Mimicking Diet
Focus Objective: Review of Prolon, 5-day fasting-mimicking diet (FMD) that replicates the positive metabolic effects seen in fasting by promoting multisystem regeneration, enhanced cognitive performance, the promotion of fat loss, and improved healthspan with minimization of the side-effects traditionally associated with fasting such as low blood sugar, Fatigue, loss of muscle mass and weight regain.
Fasting, the practice of abstinence from any food or drink except for water, has been practiced for both spiritual and health reasons for a millennium. The practice has its roots in spirituality, with the Muslims fasting during Ramadan and Christians, Jews, Buddhists, and the Hindus fasting on designated calendar months or days of the year. We will not deal with the spiritual benefits of fasting here but rather focus on the perceived and evidence-based positive health outcomes associated with fasting and its various forms.
While much of our research on fasting comes from animal models, the focus here will be on human clinical trials, and subject areas of interest are:
· Changes in weight
· Changes in metabolic parameters associated with type 2 diabetes
· Effects on risk for and progression of cardiovascular disease
· Effects on cancer prevention and progression
We know clinically that the process of fasting results in ketosis and significant changes in metabolic pathways, stress resistance, lipolysis, autophagy, and cancer response. Medical applications to date include treating epilepsy, rheumatoid arthritis, weight reduction, longevity, and increased healthspan. (1)
Types of fasting models
Fasting models can be broken down into intermittent, modified fasting regimens, and time-restricted feeding. Alternate day fasting is what the name implies. Days of no food intake are cycled with days of normal food intake. Data from these regimens are limited but do show positive reductions in blood glucose, improvement in inflammatory markers, and mild weight loss of about 2.5%.
Modified fasting regimens typically provide 20-25% of energy needs on scheduled fasting days. This routine showed positive reductions in visceral fat, the appetite hormone leptin, and increases in the weight friendly hormone adiponectin. Significant weight loss was observed along with reductions in fasting insulin but not glucose. There were mixed results with regard to lipid reductions.
Time-restricted fasting is based on balancing energy intake with the circadian rhythm. In both animal and human studies, the incorporation of regular fasting intervals and eating in accordance with normal daily circadian rhythms may be important for maintaining optimal metabolic function in a variety of areas. A robust research area in shift workers showing a disruption in the circadian rhythm is associated with an increased risk of obesity, diabetes, cardiovascular disease, and cancer. In addition, data from other studies also support the hypothesis that consuming most of the day's energy needs earlier in the day is associated with lower weight and improved health (1).
Intermittent fasting involves fasting so many days and then following a normal healthy diet for a period and then repeating the fasting cycle followed by a normal healthy eating pattern. Most of our animal and human research are based on this model of fasting.
Problems with water only fasts
When presented with various fasting options, the question is frequently asked, "Why not just do a water fast since it doesn't cost anything and its easy?" The fact is, a water-only fast is not that easy, requires discipline, and comes with some potential side effects such as:
· Electrolyte imbalance
· Low blood glucose leading to hypoglycemia
· loss of lean body mass or muscle
· Maintenance of weight loss difficult
· Extreme hunger
Depending on the length and repetitions of the fast, nutritional malnutrition may come into play, compromising the primary goal of health improvement.
What is ProLon?
ProLon is a periodic fasting program of 5 days of a scientific and patented, calorie-controlled diet followed by three weeks of normal healthy eating and then repeating the cycle two more times to achieve desired outcomes. The fasting-mimicking diet controls many of the downfalls of a water only fast by providing a limited number of calories in an optimal nutrient base to support the metabolic functions that occur during a water fast but avoid the pitfalls associated with a zero-calorie intake. (2)
What is in Prolon?
ProLon contains 66 totally unique ingredients studied at the University of Southern California under the sponsorship of a National Institute of Health grant. It is a prestigious and successful attempt to realistically mitigate the fasting process while providing an optimal diet.
The diet contains a variety of soups, bars, supplements, drinks, teas, and crackers. Day 1 is 1100 calories, while each of the other four days is about 770 calories. It is gluten and dairy-free.
How does ProLon work?
The food kit, studied for 25 years at the University of Southern California, is designed to trigger the body's identification of the presence of food through the following nutrient-sensing pathways:
· IGF-1, mTOR (Mechanistic Target of Rapamycin) and PKA (Protein Kinase A) are two critical nutrient-sensing pathways that recognize the presence of protein, carbohydrates (sugars)
· These nutrient-sensing pathways are pro-growth and pro-aging and lead to many common health problems including heart disease and cancer
· ProLon downregulates these pathways enhancing a fasting mode and activating cellular regeneration and rejuvenation (3)
ProLon allows you to eat while tricking your body into acting like its on a fast
What is ProLon for?
ProLon affects many regenerative and rejuvenating changes, including effects on a wide range of markers that contribute to aging and ill health. In clinical trials, ProLon has been found to (3)
Maintain Healthy Levels of:
· Fasting blood glucose
· Blood pressure
· C-reactive protein
· Stem cells
· insulin-like growth factor (IGF-1)
Improve the following:
· Regenerative Weight Loss driven by visceral fat loss
· Maintenance of lean body mass
· Energy levels
· Skin appearance
With the success of ProLon, the company plans on implementing fasting regimens tailored for a variety of medical conditions, including cancer support, multiple sclerosis, Alzheimer's support, and diabetes control therapy. ProLon is prescribed by 5,000 clinics nationwide.
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1. Patterson RE, Laughlin GA, Sears DD, et al. Intermittent fasting and human metabolic health. 2015. J Acad Nutr Dietetics; 115(8):1203-1212.
2. Brandhorst S, et.al. A periodic diet that mimics fasting promotes multisystem regeneration, enhanced cognitive performance, and healthspan. 2015. Cell Metabolism; 72(1):86-99.
3. Brandhorst S., Wei M, et al. FMDs and risk factors for aging, diabetes, cancer, and cardiovascular disease. 2017. J. of Sci Translational Med;24(9):377.
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