My solution: live a clean life-sex in marriage with a person you can trust, who is disease free; grow your own food (if possible), if not buy local produce, eggs and chicken, beef and pork; put in your body only what is necessary (little alcohol, refined sugar, and junk food); avoid vaccines (flu, chicken pox, shingles, pneumonia). Your immune system and healthy eating, weight control should benefit you. Exercise and adequate sleep, if possible. Home school whenever possible. Just my opinion.