ProLon Nutrition Program Review: Does it deliver on its promises?

Embarking on a journey to reset and rejuvenate, the ProLon Nutrition Program is designed to simulate the effects of a fast while providing nourishment. 

Comprising a carefully calibrated selection of plant-based ingredients, this program has been rigorously developed through extensive research to promote autophagy, your body’s natural renewal process. 

Whether you seek a health kickstart or a bridge to a more sustained lifestyle change, ProLon offers a structured path to potentially enhance well-being with its science-backed, short-term nutritional regimen.

About ProLon Nutrition Program

The ProLon 5-Day program is an innovative nutritional breakthrough, honed by two decades of research and $48 million in funding. It is the culmination of studies conducted by 14 global universities and holds the unique distinction of being patented for its effects on healthy aging. 

Developed by L-Nutra and spearheaded by Dr. Valter Longo of The University of Southern California, this plant-based nourishment kit has been designed to deliver the profound cellular, metabolic, and psychological benefits associated with prolonged fasting, without foregoing food entirely.

By strategically supplying the body with macro and micro-nutrients, ProLon ensures that nutrient-sensing pathways remain untriggered, allowing the body to enter a rejuvenating fasting state known as autophagy—awarded the Nobel Prize in Medicine in 2016. This process facilitates fat-focused weight loss, primarily targeting belly fat while preserving lean body mass.

What’s inside the box?

  • Soups: A selection including Green Pea & Chives, Red Bell Pepper and Onion, Chickpea and Leeks, Carrot Ginger, and Lentil Curry
  • Nut bars: Tasty, cold-pressed bars containing almonds, macadamia nuts, and pecans.
  • Snacks: Olives from Southern Spain and kale crackers enriched with plant-based protein.
  • Supplements: A daily supplement pack with multivitamins, amino acids, minerals, and omega-3 fatty acids.
  • L-Drink: A fruit-flavored glycerol mix for muscle support.
  • Herbal teas: A variety of caffeine-free options loaded with antioxidants for hydration​​.
assorted ProLon snacks, soup, tea, crackers

How to use

The program is straightforward, each day’s food is pre-packed in individual boxes, labeled to guide you through the five-day journey. 

The goal is not just to nourish but also to induce the benefits of fasting, such as autophagy, by following a meticulously designed eating plan that aims to replicate the cellular benefits of a traditional fast​.

Longevity.Technology scored ProLon 5-Day Nutrition Kit at 24.5/25
Does the product do what it claims to do, and does it do it well?
Value for money
How does it stack-up with competitors or similar products or services?
Proven claims/science
How well has the company conducted or used scientific research and studies to validate its product/service?
Longevity specific
How applicable is it to the longevity marketplace and the daily life of a longevity enthusiast?
Ease of use
How straightforward is it for users to use the product without facing any difficulty?
Backed by extensive research and patented technology.Some find the meal plan challenging to maintain.
Offers a structured, nutrient-dense eating plan.The taste of certain items may appeal to only some users.
Supports metabolic health and encourages cellular repair.The concept of fasting-mimicking may require a mindset adjustment.
Users report positive effects on weight and mental clarity.

Explore the ProLon Nutrition Program for a revitalized approach to health and start your transformative journey today.

User reviews

ProLon’s 5-Day fasting program garners a diverse array of feedback. Customers often report positive experiences, citing enhanced well-being and noticeable weight loss. 

A recurring highlight is a surge in energy, mental clarity, and focus post-program, as noted by the chief medical officer of L-Nutra, the nutritional company behind ProLon​​. 

Moreover, enthusiasts of the kit delight in the taste and quality of certain components, especially the breakfast bars and snacks like kale chips and chocolate bars, which some wish were available separately​.

Positive outcomes

  • Weight loss: A notable number of users report losing weight, with some shedding significant pounds over the five-day period.
  • Blood sugar regulation: Users with concerns about blood sugar levels, including those with prediabetes, have observed positive changes.
  • Enhanced well-being: Reviews frequently mention increased energy, mental clarity, and focus after completing the program.
  • Tasty snacks: Specific items like breakfast bars, kale chips, and chocolate bars receive praise for their flavor, with some users expressing a wish to purchase these snacks independently.


  • Program difficulty: Some users find the program hard to stick to, with the daily soups sometimes less favored.
  • Taste perception: There’s feedback suggesting that the appeal of the food may be heightened by the hunger experienced during the program.

Skeptical but satisfied

Despite initial skepticism, particularly from those accustomed to trying various health products, a subset of users reports substantial weight loss and a positive overall experience with ProLon.

Overall, user reviews of ProLon’s Nutrition Program present a mixed bag, reflecting a range of individual preferences and experiences. 

While many report beneficial results, others find aspects of the program less enjoyable. This underscores the subjective nature of dietary experiences and the importance of personal alignment with the program’s offerings.

butternut squash soup in white bowl

At a glance

• Simulates fasting effects while providing nourishment
• Developed from 20 years of research
• Straightforward daily meal organization
• Supports autophagy and cellular rejuvenation
• Plant-based soups with diverse flavors
• Nut bars with whole ingredients like almonds and pecans
• Snacks including olives and protein-rich kale crackers
• Multivitamins, amino acid, mineral, and omega-3 supplements
• Fruit-flavored L-Drink for muscle health
• Antioxidant-rich, caffeine-free herbal teas

Our verdict

ProLon Nutrition Program presents a compelling, science-based approach to wellness that combines the benefits of fasting with the practicality of eating. 

While its innovative design is praiseworthy and the potential health benefits are alluring, success with ProLon may vary by individual. It requires a commitment to follow through the five-day plan and an openness to a new dietary experience. 

For those seeking a structured path to jumpstart their health goals, ProLon is a noteworthy option, albeit with a few caveats to consider.

Final thoughts

The ProLon Nutrition Program is a meticulously crafted nutrition plan that offers a unique blend of benefits, aligning with the body’s natural fasting responses. 

It’s a testament to innovation in the wellness industry, marrying convenience with scientific insight. 

While it may not be a one-size-fits-all solution, and some may find the taste and regimen challenging, the potential health rewards like weight loss and improved metabolic health make it an intriguing option for those looking to reset their system. 

Ultimately, ProLon is a tool that, if used correctly, could be a transformative step towards better health.

Interested in experiencing the benefits of a fasting-mimicking diet for yourself? Try ProLon Nutrition Program to unlock the potential of fasting with ease and convenience!

Photograph: ProLon
The information included in this article is for informational purposes only. The purpose of this webpage is to promote broad consumer understanding and knowledge of various health topics. It is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.