Aromatase Inhibitors in the Treatment of Male Infertility

Inclusion Criteria: 1. Male partner of a couple presenting for infertility work up after one year of unprotected intercourse 2. Moderate oligozoospermia (defined as mean sperm count ≤ 20 × 106/mL and ≥ than 3 × 106/mL) of at least two separate occasions spanning a minimum of two weeks 3. Obese men BMI ≥ 30 4. FSH and LH levels \< 10 mIU/mL Exclusion Criteria: 1. Severe Oligozoospermia: Sperm count \< than 3 × 106/mL, including azoospermia 2. Age less than 18 or greater than 65 years 3. Pyospermia or leukospermia: defined by white blood cells ≥ 1 million leukocytes per milliliter of semen 4. Cryptorchidism 5. Vasectomy reversal 6. Regular use of tobacco products 7. BMI \< 30 8. Use of anabolic steroids or testosterone replacement 9. All patients with abnormal initial liver function tests "AST or ALT" will be excluded form the study