Is fasting healthy and safe? What complaints are associated with fasting?

For most people, yes. And prolonged fasting contributes to transformative, sustained health benefits. However, if you have a health condition of any kind, or any concerns about fasting, you should speak to your healthcare provider before starting a prolonged fast.

Due to nature of fasting, there are common complaints associated with it including fatigue, headache, dizziness/ lightheadedness, musculoskeletal pain, nausea, and difficulty with concentration during the fasting period. Complaints are mild and tolerated for most people.

ProLon is a food-based program. Any significant change in diet (including fiber intake) can contribute to changes in your gut such as bloating, cramping and gassiness, constipation, or diarrhea. 

ProLon is designed to prevent many of these symptoms of fasting by providing specific macro and micronutrients. However, because it is still a low-calorie program, we encourage you to discuss with your healthcare provider whether the practice of fasting or the use of fasting mimicking diet is right for you. To minimize any risks associated with fasting, please follow these recommendations during the 5-day program: Please avoid the following during the 5-days of the program:

  • Avoid any strenuous exercising or activities that may consume a high level of
  • Avoid extreme temperature environments like hot tubs and saunas, or driving long distances under strong sun or heat
  • Since ProLon is a food-based program, please stop the product should you experience any symptom of an allergic reaction such as a rash, change in voice, swelling or fever.
  • If you feel light-headed or faint, you should eat something, drink juice, or consume a beverage with sugar. If your symptoms do not subside, please contact your physician, or if you feel this is a life-threatening emergency, call