Suffering From Stress And Fainting, Kindly Help

hi doctor , I'm writing this about my husband. he is always concerned with health and tries to lead a healthy life. yesterday he read in a forwarded mail that less hair in chest can lead to chirosis!! he has less hair on his chest!! he started searching internet about chirosis for sometime and got stressed. but he recognized the relationship between alcohol and chirosis only after may be 30mts of reading. [he is not an alcoholic]. By this time he was very stressed and just he got up from the chair, fainted. But luckily as i was around, i was able to make him up and later on he was OK. 5 years back also a similar incident occurred, where he fainted when he had to undergo blood test for viral fever . He is afraid of blood, illness etc. With reassurance he seems OK now, but i am not sure how he will be the next time. pls advice me how to handle the situation. many thanks, megha