Yeah, an endless back and forth. I have lost all faith in science. And I have a Ph.D.
I know the feeling. A month ago my doctor wrote a prescription for Vitamin D2 because blood test showed D level was seriously low. When I went to pick it up at the pharmacy I noticed that it was a "synthetic" product, and I have always heard bad things about synthetic vitamins. So I rejected it and went to the Health Food store and bought a Vitamin D3 all natural supplement - strength of which is the same as that prescribed by my doctor.
The doctor is very angry at me and says if I refuse to follow instructions how can she help me. When I explained that I substituted a natural (non-synthetic) product she said she had never heard there was any problems with synthetic vitamins.
To say the least, I am having trouble knowing who to believe and trust. Any FReeper advice is welcomed.