To Study Seasonal Variation in Serum Total Testosterone Levels in Adult Males

Levels of serum total testosterone vary with season. The levels of serum total testosterone have profound effect on metabolism of the body and affects weight and waist circumference. The present study was conducted to assess the seasonal changes in serum total testosterone levels. The study was conducted in 55 healthy male medical students of first professional M.B.B.S. and employees of 18 to 50 years age group at G.S.V.M. Medical College, Kanpur. The serum total testosterone levels were estimated by ELISA kit with the help of ELISA reader in the months of December & January and May & June. The change in mean weight, mean height, BMI, and Waist to Hip ratio of the subjects were found stastistically insignificant(p>0.05). Waist circumference in Dec-Jan was 81.3±7.9 cm and in May-June was 80.6±8.0 cm. This decrease in waist circumference was significant (p<0.05). The serum total testosterone in Dec-Jan was 4.43±0.99 ng/ml and in May-June was 3.05±0.85. This decrease in serum total testosterone was significant (p<0.05).