My brother is always afraid of having or getting a disease..im afraid that he has hypochondriasis..what should i do?thank you..

Nothign to do: Some hypochondriacs are cured only by going through medical school. If your brother recognizes his fears are unrealistic, he may be willing to learn some tricks from a good cognitive-behavioral or other therapist to get his mind back on track with the serious business of living in the world as it is. Beyond this, just be a good and affectionate family member, criticizing only when really needed.