Overweight men have poorer sperm count
Overweight or obese men, like their female counterparts, have a lower chance of becoming a parent, according to a comparison of sperm quality presented at a European fertility meeting Monday.
In what they described as the largest study of its kind, doctors looked at sperm samples from 1,940 men and matched them to the donor's weight.
The benchmark was the body mass index (BMI), a measure of body fat among adults. Under this, normal weight is defined as a BMI of 18.5-25; overweight as 25-30 and obesity as 30 or more.
The higher the count in excess weight, the more the sperm quality suffered, especially among those in the obese category, according to the findings, presented at the annual conference of the European Society of Human Reproduction and Embryology (ESHRE) in Stockholm.
"Excess weight causes a modification in sperm characteristics, probably as a result of hormonal disturbance, which results in lower sperm numbers, motility and vitality," said Paul Cohen-Bacrie, scientific director at Eylau-Unilabs in Paris, part of a Swiss-based network of labs in 12 European countries.
"This leads to losses in conception potential," he said by phone.
The research found that the sperm count was lower by 10 percent among overweight men, and by 20 percent among obese men, compared with counterparts of normal weight.
The percentage of men who had a zero sperm count rose almost fourfold, from one percent in the normal weight category, to 3.8 percent, in the obese category.
Life & Style blogs
Plus the Property Power 100, and the best day to sell your home
Nobel Peace prize winner Albert Schweitzer once quipped: “Happiness is nothing more than good health...
Many years ago, I lost nearly all my upper frequency hearing as a result of military action. What pr...
- 1 Notes from a small island: Is Sealand an independent 'micronation' or an illegal fortress?
- 2 British business: We need to stay in the European Union - or risk losing up to £92bn a year
- 3 The moral case on tax avoidance is overwhelming - and we all know Google wants to do the right thing
- 4 Sam Wallace: The second coming of Jose Mourinho at Chelsea will be a reunion that can only end in tears
- 5 It’s official: thanks to Stephen Hawking's Israel boycott, anti-Semitism is no more
BMF is the UK’s biggest and best loved outdoor fitness classes
Find out what The Independent's resident travel expert has to say about one of the most beautiful small cities in the world
Win anything from gadgets to five-star holidays on our competitions and offers page.
Negotiable: Randstad Education Chelmsford: Randstad Education is the market le...
£24000 - £28000 per annum: Randstad Education London: A leading Further Educat...
£500 - £680 per day: Orgtel: Quantitative Risk Analyst, Front Office/Risk Bank...
£18000 - £25500 per annum: Randstad Education Cambridge: Randstad Education ar...