Non-Existent Illnesses

I am one of the moderators on an Internet group for coeliac disease.

Time and time we hear stories of people, who have been wrongly diagnosed and given many inappropriate drugs. Often these are anti-depressants, as one of the symptoms of undiagnosed coeliac disease is mild depression. The only cure is a gluten-free diet.

One wonders how many people are given drugs, for this and other diseases when the solution is something much more mundane, like diet, exercise or giving up smoking.