Scientifically formulated 5-day meal plan, so you can fast with food™.
More than 20 years of research and development with partners including the National Institutes of Health (NIH), the Longevity Institute, and the Diabetes and Obesity Research Institute of the University of Southern California (USC). Nourish your body while enjoying many of the benefits of being in a fasting state. Healthy convenience you can stick to and benefits your body.
Key Benefits of The Fasting Mimicking Diet
Trigger the beneficial effect of fasting & promote rejuvenation from within
Maintain healthy levels of metabolic balance. Transform your lifestyle & eating habits.
Enhance Clarity & Performance
Customers report feeling greater focus, clarity and energy both during & after the fast.
ProLon can induce weight loss while protecting lean body mass. The rate of weight loss may change from subject to subject.
The 5-day journey your body is on.
Transforming from the inside out, swipe right to view the days transformation.
a Fasting State
The body transitions into a fasting state & fat-burning mode so it can begin cellular clean-up.
Fat Burning & Ketogenesis
Fat-burning ramps up, contributing to the initiation of ketogenesis (ketone production). By the end of this day (48hrs), ketosis may occur.
Clean Up State
Cellular clean-up begins. Fat-burning and ketone production/ utilization continues and increases.
Cellular cleaning/renewal & fat-burning continues. You're in the final stretch!
Renewal & Transformation
Your transformational journey is completed. Re-feeding beyond day 5 will fuel a better you.
What fellow Fasters' have to say
I'm eager to try fasting, but I am skeptical about it. When I've heard about ProLon from a friend of mine, I immediately engaged myself. Good thing I followed the instructions and was able to fast and diet for 5-days. Though it's hard at first, it is worth it.Aria Luna
This was my first 5 day. I was amazed about how I was rarely hungry and how much energy I had. Highly recommend!!Michele Kehrer
Round 2 please.Mariah Wilt CPC
What a wonderful plan and support team. I was nervous and a little skeptical but am so glad I made the decision to try this. I can’t wait to start my second one.
The best fasting product out there.Monica Monroy & Jonathan Garcia
Very healthy, I felt renewed and ready to continue my journey to a healthier me.
I love this intermediate fasting protocol. Works wonders in wellbeing and byproduct of loss of weight. The packaged items are nice tasting as well. I have already done this protocol about 4 times in the last 6 months.Sunil Bharitkar
The Only Scientifically
Tested Fasting Diet®
ProLon is the first and only clinically tested, doctor recommended fasting meal program. ProLon’s breakthrough nutri-technology was researched for over 20 years and developed by Dr. Longo at The Longevity Institute at the University of Southern California with tens of millions of dollars in funding support from the National Institutes of Health. In 2018, TIME nominated Dr. Longo to be among the top 50 most influential people in health.
ProLon® is taking the world by storm
Supermodel, Actor, TV star, Businesswoman – Rachel Hunter
“Professor Valter Longo’s Fasting Mimicking Diet is the best beauty product and secret that I have discovered”
Features Editor of The Sun & The Sun on Sunday
“I have tried pretty much every diet going and this is undoubtedly my favourite – because it works! Prolon is a ‘fast-mimicking diet’ that lasts just five days to activate the body’s ‘dormant ability to protect, repair and rejuvenate itself’. So it helps you lose weight but scientists say it can cut heart disease and cancer risks if done regularly too. You get five boxes of food – crunchy kale biscuits that I loved, filling soups, sweet nut bars and yummy, although small, chocolate bars. it averages out at about 800 calories a day. Not fun or easy but for five days it ISN’T difficult. I shifted weight that I’ve been trying to unpack for over A YEAR. Blood tests afterwards showed my visceral fat, ‘the dangerous stuff that wraps around your internal organs’ had dropped too. A month later I’ve put on ONE solitary pound. Best diet I’ve ever done and will do this every couple of months to keep on track!”
Celebrity Facialist – Nicholajoss.com
“I had such a great experience with ProLon and felt so much better, cleaner, clearer, lighter!”