From our friends at IDDT  ( ), here are the symptoms they collected on the problems with the use of synthetics, excepting weight gain, I have personally experienced ALL of these problems on all synthetics AND on pork, we need all species and types of insulin (even the Genetically Engineered ones which may cause cancer in some of us): 

  • 41% - loss of warnings of hypos or ‘I seem to function on automatic pilot’*

  • 34% - extreme tiredness or lethargy *
  • 32% - weight increase of 1.5 stones or more
  • 28% - feeling unwell all the time
  • 24% - depression including referrals to psychologists or being prescribed anti-depressants *
  • 24% - memory loss/confusion *
  • 9% - ‘sleeping all the time’ *
  • 9% - blood glucose levels dip and peak wildly *
  • 8% - ‘not the same person’ *
  • 7% - pains, especially in the leg
  • 5% - mood changes – difficult to live with *
  • 4% - late or irregular periods

           * [ All of these are listed symptoms of hypoglycemia since the change in symptom lists needed to prove human safe vs. pork back in 1990-92, see change ed]

  • 24% - told us that their doctor was unwilling or reluctant to change their insulin to natural animal insulin
  • 8% - wanted more information
  • 3% - told us their doctor did not listen, ‘it’s all in the mind’

Of equal concern, we frequently received the following comments:

  • ‘I didn’t know there was such a thing as animal insulin.’
  • ‘I was never told there were alternatives.’
  • ‘I didn’t realise ‘human’ insulin was not derived from human beings.’


  • No large scale, long-term trials comparing ‘human’ and animal insulins have ever been carried out.

  • The first research in 1980 using ‘human’ insulin, by Professor Harry Keen, involved 17 healthy non-diabetic men and in 1982 ‘human’ insulin was given a licence for general use. This is a remarkably short time for a new drug, especially as ‘human’ insulin was the first ever genetically engineered drug to be used on people.

  • The research that has been carried out has largely been in the laboratory situation and/or using small numbers of people, so the relevance of this research is questionable.

  • There is no evidence to show that synthetic ‘human’ insulin has any advantages over natural animal insulins.

  • ‘Human’ insulin has been shown to be more aggressive with a faster action and a higher peak of action than the equivalent porcine or bovine insulins.

 An additional FACT is the work of Sotos Raptis in 1980, published in 1981. Click here for details.