Why do I sweat so much

Why do I sweat so much?
Dear Dr. Happiershopper: I am 45 and in good health. I have always perspired freely. When I first started wearing synthetics, I found that I produced a peculiar urinary odor. This was fairly easy to control by changing after a few hours.

For the past few years we have lived in a very humid area, and I stain my polyester garments under the arms. They look yellow after three or four wearings even though I shower daily. I have been trying to buy garments made of cotton or natural fabrics, but that is surprisingly hard to do and I suspect that even these garments are beginning to discolor. I would appreciate any help you might offer. How can I treat urinary odor, why do I sweat so much ?
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