ProLon safety checks


Don’t take ProLon® if:

  • You are under the age of 18
  • You are pregnant or breastfeeding
  • You are allergic to nuts, soy, oats, sesame, or celery/celeriac (ProLon® contains these)
  • You have dietary restrictions or a fever, cough or diarrhoea
  • You have an active infection or are at risk of repetitive infection
  • Your BMI (body mass index) is less than 18.
    (Calculate your BMI here.)
  • You are malnourished or have experienced protein deficiency
  • You remain seriously weakened by a disease or medical condition
  • You have a metabolic disease especially if it affects gluconeogenesis or similar (In this case, any type of fasting is prohibited.)
  • You have a history of significant heart disease, particularly uncompensated congestive heart failure NYHA grade 2 or more, or have had an LVEF greater than 40% on any prior assessent
  • You have special dietary needs that are incompatible with the ProLon® meal plan
  • You have liver or kidney disease that may be affected by the very low glucose and protein content of the ProLon® diet


Don’t take ProLon® without a doctor’s supervision if:

  • You are over the age of 70
  • You have diabetes (type 1 or 2)
    Note: ProLon should never be combined with glucose lowering drugs such as metformin or insulin.
  • Your BMI (body mass index) is greater than 35.
    (Calculate your BMI here.)
  • You have cardiovascular disease
  • You have cancer
  • You have kidney disease
  • You have liver disease
  • You have any history of fainting (syncope)
  • You have been diagnosed with a serious medical condition and you have not fully recovered from it
  • You are taking a medication which otherwise may not be safely taken while on a calorie restricted diet


If you are taking any regular medication (one or more pharmaceutical drugs), you must continue to do so under the supervision of your GP or supervising healthcare physician.


Do not try to apply any type of fasting mimicking diet to treat either type 1 or type 2 diabetes alone or even with the help of a doctor.

The combination of the FMD and insulin but also other drugs could cause severe problems and even death.

Although the use of the FMD to treat either type 1 or 2 diabetes is promising, it must be first tested and proven effective in FDA clinical trials which will probably require hospitalisation during the treatment.