Food and the people you're spending time with are critical. You can be sick because you deal with a toxic person, particularly relatives or intimate relationship. Leaving that person will make a seemingly unrelated sickness disapear almost overnight (asma, back pain, etc.). It happened to me and my father. No rocket science here.

Thats why they all on medication in offices. They are toxic to each other, they get sick. It's just that sometimes the person go from toxic parent to office and never realize whats causing the disease.