FAQs

Medically-Related ·
Can I use ProLon with an existing health condition?
If you have a medical condition, talk to your healthcare provider to determine your suitability for ProLon. If you do not have a provider, you can use our Healthcare Provider Locator to see if we have a provider near you.
Medically-Related ·
Will I experience acid reflux?
Acid reflux was not a commonly reported occurrence during the clinical trials for ProLon, but different people experience reflux for different reasons, and we cannot give medical advice or state anything about acid reflux and your potential experience with certainty....
general-information · q-009 ·
How long do the benefits of the ProLon program last?
Health benefits are sustained for up to three months if you complete 3 consecutive cycles of ProLon. We have not studied the retention of benefits from a single cycle of ProLon.
general-information · q-008 ·
What are the food pathways affected by the ProLon program?
While there are many different signaling factors in the “nutrient-sensing pathways” involved with cellular fasting, the 3 primary nutrient-sensing pathways that ProLon and fasting down-regulate are IGF-1, mTOR, and PKA. The process is complex, and each pathway can interact with...
general-information · q-007 ·
What type of fast should I do?
No matter which kind of fasting you choose, it can be beneficial. There may be certain risks with specific kinds of fasts, which is why you should first talk about your plan with your healthcare provider. To learn about the...
general-information · q-003 ·
Who should engage in the ProLon® Dietary program?
ProLon is intended for use by healthy individuals who want to enhance their health and well-being and by individuals who struggle with weight and want to proactively manage their weight in an easy and healthy way.
general-information · q-002 ·
What happens in my body during the Fasting Mimicking Diet?
FMD® provides the body with a scientifically developed, naturally occurring combination of macronutrients (fats, carbohydrates, proteins) and micronutrients (essential vitamins and minerals) designed to keep the body nourished while going through the rejuvenating process of the fasting state.  What happens on...
general-information · q-001 ·
What is the ProLon Fasting Mimicking Diet (FMD) and how does it work?
The ProLon Fasting Mimicking Diet is a proprietary plant-based restricted-calorie meal program that lasts 5 days and has been scientifically designed to provide the rejuvenating effects of fasting at the cellular level, while still providing the body with nourishment. It...
quality-and-form ·
Why do we use powdered soups?
Our powdered soups are scientifically engineered for maximal health benefits, and artfully crafted for optimal taste. The powdered formula enables us to precisely calibrate and measure the essential nutrients and ingredients in each soup packet to ensure quality and consistency....
general-information · q-010 ·
How should the ProLon Diet be used?
The diet should be used for five consecutive days, after which the individual will transition on the 6th day and then resume their normal diet. The program provides a meal card that recommends how to consume the items for each...
general-information · q-012 ·
How much weight can one expect to lose, and will the individual be able to keep it off?
While the purpose of the ProLon diet is to trigger rejuvenation, weight loss may occur. Everyone is different, and weight loss depends on a number of factors. In a clinical study of participants who completed a 5-day ProLon cycle once...
general-information · q-013 ·
What is the daily caloric intake on ProLon?
Day 1 has about 1100 calories (kcals), while Days 2-5 have between 700 and 800 calories (kcals) per day.
general-information · q-014 ·
Why do people of different sizes and weights eat the same things and get the same number of calories while on the program?
ProLon has been studied in a wide range of individuals with different caloric needs and the overall meal program was found to be effective at inducing a fasting state in people with a wide range of body mass indices (BMIs),...
safety-precautions ·
I am on ProLon and have a medical emergency
We're so sorry to hear about your experience. If at any time you're unsure of your well- being or concerns of anything you are experiencing, stop your fast by consuming food. If you feel that at any time your health...
safety-precautions ·
I have a headache (other adverse effect) – what should I do? Please advise.
If at any time you're unsure of your well-being or concerned of anything you are experiencing, stop your fast by consuming a healthy balanced meal. If you are unclear as to what food you should consume, then please reach out...
safety-precautions ·
I am experiencing adverse effects (headache, fatigue, bad, hypoglycemic etc.) - what should I do?
Individuals experience fasting different, which may be based on several contributing factors. If you’re unable to tolerate the side effects and you feel that your health is a concern at any time, we recommend consulting with your primary care physician....
safety-precautions ·
Will fasting impact my health markers (cholesterol etc.)?
Everyone experiences fasting differently. As an individual, we cannot specifically inform you. It would be best to discuss this with your healthcare provider to better understand how fasting may fit into your life. Once you read about fasting and if...
safety-precautions ·
What is the difference between ProLon and water-only fasts? What are the benefits of doing ProLon® instead of a water-only fast?
The main difference between ProLon and longer fasts is that ProLon provides nutrition during the fast to decrease the risks of side effects and loss of lean body mass. While some people can tolerate fasts of longer than 5 days,...
safety-precautions ·
Why should I do ProLon® instead of my own version of a fasting mimicking diet?
ProLon® is supported by over 20 years of research and development, including clinical trials. We strongly advise against DIY fasting mimicking diets, which may not include the proper macro- and/or micro-nutrients, may not effectively put your body into a fasting...
product-care-and-storage ·
Can I use my ProLon kit or any of the contents after the expiration date?
Similar to other foods, consuming our products after the best before date is not recommended. Expiration (or best before) dates are set to ensure consumers experience our products closest to how they were formulated and designed. Some ingredients, such as...
product-care-and-storage ·
How should I store my ProLon?
L-Nutra products, including ProLon, are shelf-stable and packaged to protect against normal and seasonal temperature fluctuations. They should be stored in a cool, dry place, out of direct sunlight, in their original packaging. They do not need to be refrigerated...