Login to Access Video or Poster Abstract: MP84-14
Sources of Funding: none

Introduction

Evaluation and treatment of men with low testosterone have become an important part of urological practice. However prevalence of symptoms associated with low testosterone in healthy men especially aged <50 years were still unclear. We have reported the association between testosterone levels and symptoms related to low testosterone using aging male symptom score (AMS score) in healthy young men. Also the association between lifestyle and testosterone level in healthy young men was still unclear. The objective of this study was to examine the association between lifestyle and total testosterone levels in healthy young and elderly adult.

Methods

This study included 1557 healthy men who were working for our university and taking annual medical check-up between the ages of 22-73; 145 in 20&[prime]s, 582 in 30&[prime]s, 446 in 40&[prime]s, 291 in 50&[prime]s and 93 over 60. Serum testosterone was measured by electro-chemiluminescence immunoassay. The number of waking time during night, smoking history, drink habit, the length of time using the internet and playing game, the times of night shift per month and the number of taking breakfast per week were obtained from questionnaire. Each items were dichotomized into more than one time night waking and none, having smoking history and none, drinking every day and not every day, more than thirty minutes and less, more than five times night shift and less, taking breakfast every day and not every day, respectively. The relationships between testosterone and lifestyles were analyzed by locally weighted linear regression.

Results

More than one time waking up during night, the habit drinking every day, having smoking history were related to lower testosterone level. About the length of time using internet and playing game, there was the relationship that lower testosterone was related to low probability of using internet more than thirty minutes (Figure). There was no relationship between testosterone level and the times of night shift per month and the number of taking breakfast per week.

Conclusions

Lifestyles such as internet use, night waking, drinking habit and smoking in healthy young and elderly adults are associated with testosterone levels.

Funding

none