A member asked:

What could cause sperm counts to keep decreasing? no changes to lifestyle apart from increasing exercise, losing weight and taking vitamins.

4 doctors weighed in across 2 answers

Genetics or hormonal: Declining sperm counts can reflect the following: 1. Genetic issue- deletions in certain genes can cause waning sperm counts and function 2. Hormonal abnormalities such as thyroid dysfunction or hypothalamic abnormalities other exposures including environmental- chemical- chemotherapy-mumps can cause waning sperm counts.

Answered 4/16/2015

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Dr. Marsha Davis answered

Specializes in Internal Medicine

Tight shorts: Testosterone supplements, certain herbal supplements, bpa plastics, obesity, pesticides, and watching more than 20 hr of tv a week, alcohol, stress all been associated with drop in sperm counts.

Answered 9/10/2013

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