[1][2][3] Berger advises his readers to eliminate what he called the "Sinister Seven" from their diets, as they cause immune damage.
After "detoxifying" the immune system and elimination was completed, these foods could be gradually eaten again, but no more than once every four days.
[1][4] The Harvard Medical School Health Letter suggested the book was fiction and based on quack ideas about food allergies.
[8][9] Berger advocated dangerous megavitamin supplements for different ills which were unsupported by scientific evidence.
Nutritionist Jack Z. Yetiv noted that Berger recommended his patients to megadose on Vitamin B6 supplements but these have been shown to be toxic in large amounts and the cause of irreversible nerve damage.