According to a recent world epidemiological study, current diseases (diabetes, obesity, cancer, cardiovascular, neuro-degenerative disease, allergy) explode since 50 years and continue to increase. And this because of the evolution of technical progress (Wi-Fi), development of industrial food, and stress increasing in our modern society face to instability of economy. The most recent scientific estimations confirm that a better prevention could reduce from 30 to 60 % the risks of these new and existing diseases. That is why a medical check-up is recommanded by the age of 20. As prevention, this book allows the reader to inform himself and to understand his medical analysis. He can find : – Medical check-ups with a multiple choice questions form – – Interests and dangers of food in general on health – Pollutants in the industrial food – Interest of diets, and how to know which one can suits you? Their protective and depolluting effect on cardiovascular and cancerous affections. Doctor Rigaill is a general practitioner. He practices since about forty years. He is also the author of several books en health.