Weekly Moderate Alcohol Consumption could Reduce Sperm Quality

By  ,  Onlymyhealth editorial team
Oct 04, 2014

For most people, it is a routine to come home from a stressful day at work and crash open a cold beer to relax. For men, it is their favourite time of the day but a new study has suggested that even a controlled weekly alcohol consumption of five units is linked to lower sperm quality in otherwise healthy men.

Low Sperm QualityPrevious animal studies have indicated a direct impact of alcohol on sperm quality. And now, it has been validated for men by the research team, including Prof. Tina Kold Jensen of the University of Southern Denmark.

"This is, to our knowledge, the first study among healthy young men with detailed information on alcohol intake," say the researchers, "and given the fact that young men in the Western world [drink a lot], this is of public health concern, and could be a contributing factor to the low sperm count reported among [them]."

The study assessed 121 Danish men aged 18-28, who underwent a medical exam for military services between 2008-2012. The assessment included questions about their drinking behaviour, and evaluating their semen and blood samples to assess their reproductive hormone levels.

It was found that 64% of the participants had binge drunk the preceding month, and around 60% said they had been drunk more than twice during that period. 11 was the average number of units that the men drank during the preceding month.

Though binge drinking in the preceding month did not have any significant impact on the sperm quality, it was discovered that drinking alcohol in the preceding week was associated with changes in reproductive hormone levels, and these changes increased significantly as the number of weekly units increased. In detail, testosterone levels increased and sex hormone binding globulin (SHBG) decreased.

Within this group of participants, the higher amount of weekly units the men drank, the lower their sperm quality was. The study indicated that drinking between one and five units per week is the magic number for healthy sperm, as - interestingly - abstinence was also linked to poorer sperm quality.

The study was published in BMJ Open.

Source: MNT

Image Courtesy: Getty

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