What Is The Treatment For Severe Hair Loss?

Hi, I am a male of 29 years. Since last 4 years i have been suffering from hair loss. I have tried homeopathic treatments but they did not give any benefit. I am regularly involved into physical exercise, but still my face looks a bit bloated and the upper half of the body is a somewhat flabby. Should I go for thyroid test, if yes where can I get it done in Bangalore?