WEIGHT LOSS
Lose fat. Protect muscle.
Keep the weight off.
Prolon’s 5-Day Fasting Mimicking Diet (FMD) harnesses the power of science to support fat-focused weight loss.
Longevity Nutrition Program
Variety Fasting Bar®, Reset, L-Protein®, L-Spread
Prolon Longevity Protein
The only protein patented for healthy aging. 25g plant based protein.
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Variety Fasting Bar®, Reset, L-Protein®, L-Spread
L-Protein
The only protein patented for healthy aging. 25g plant based protein.
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WEIGHT LOSS
Prolon’s 5-Day Fasting Mimicking Diet (FMD) harnesses the power of science to support fat-focused weight loss.
Target dangerous (and stubborn) fat
Weight loss isn’t just about numbers on a scale. Prolon targets visceral fat (like belly fat), the dangerous fat around your organs linked to heart disease, diabetes, and liver problems. Getting to a healthy weight and keeping muscle helps you live a healthier life, for longer.
Weight that stays off
With most diets, the pounds come right back. Prolon’s results last: studies show weight loss was sustained three months after the third monthly cycle, even after returning to a normal diet.


Lose dangerous
visceral fat
Protect lean muscle

Lose up to
five pounds
Many users lose up to 5 lbs in one cycle

Reduce waist
circumference
1.5 inches over three consecutive monthly cycles

Sustained
weight loss
3 months after 3 cycles

Prolon is clinically formulated to protect muscle while you lose fat, so you don’t just look leaner, you support the very engine that drives metabolism, supports strength, regulates blood sugar, and helps make long-term weight loss and strength possible.

One cycle delivers results, but the recommended protocol of three cycles per year (just 15 days out of 365) has been shown to support long-term healthy body composition and weight care. Keep it up quarterly to lock in the benefits. Three consecutive monthly cycles of the Prolon 5-Day FMD were associated with a median reduction of approximately 2.5 years in biological age.
Many users report greater awareness of their food choices following Prolon cycles, including improved portion control and a more mindful approach to eating. These shifts make it easier to sustain healthy eating habits, key drivers of long-term weight loss and weight management.

Prolon is different. With just three five-day cycles a year, you can achieve sustainable,
Fat loss and muscle protection: Lose dangerous visceral fat—while protecting precious muscle.
Drug-free: The program works with your body's natural processes, not against them. No drugs.
Sustainable results: The program resets your metabolism and relationship with food, for lasting results. Studies show that weight loss from our program stays off, even after returning to a normal diet.
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Prolon’s 5-Day FMD has been shown to help the body shift into a fat-burning state, reduce visceral fat, and support healthy metabolic markers. Along with the cellular rejuvenative benefits of autophagy, this helps give your metabolism a fresh start, helping your body work more efficiently long after the 5 days are over.
By mimicking fasting states, the clinically tested FMD initiates cellular rejuvenation, and targets visceral fat. It supports the body's natural cellular cleanup process.
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