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Audrey Gaskins
http://pilladvised.com/2013/02/too-much-tv-cuts-sperm-count-in-half/
Too Much TV Cuts Sperm Count in Half
Men’s sperm may be reduced by lack of physical activity, reports a new study from Harvard School of Public Health.
The Harvard study discovered that young men who were sedentary, as measured by hours of TV viewing, had lower sperm counts than those who were the most physically active.
“We know very little about how lifestyle may impact semen quality and male fertility in general so identifying two potentially modifiable factors that appear to have such a big impact on sperm counts is truly exciting,” said lead author Audrey Gaskins, a doctoral student at Harvard School of Public Health.
Men who watched more than 20 hours of TV weekly had a 44% lower sperm count than those who watched almost no TV.
Men who exercised for 15 or more hours weekly at a moderate to vigorous rate had a 73% higher sperm count than those who exercised less than 5 hours per week. Mild exercise did not affect sperm quality.
“The majority of the previous studies on physical activity and semen quality had focused on professional marathon runners and cyclists, who reach physical activity levels that most people in the world cannot match. We were able to examine a range of physical activity that is more relevant to men in the general population,” said Jorge Chavarro MD, senior author of the study and assistant professor of nutrition and epidemiology at Harvard School of Public Health.
- See more at: http://pilladvised.com/2013/02/too-much-tv-cuts-sperm-count-in-half/#sthash.LWdncrMC.dpuf
佈時間：2013年08月22日
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Abnormal semen analysis are one of the most common causes for difficulty conceiving in a couple. In an abnormal semen analysis, one of the most common abnormalities is a low sperm count. Sperm counts are considered low if the count is generally less than 20 million sperm per milliliter of ejaculate. Some experts consider less than 15 million per milliliter as being the lower limit of normal.
Why do men have low sperm counts? Some have low sperm counts due to genetic abnormalities where they actually produce very low numbers of sperm. Some actually have obstructions in the reproductive system whereby sperm can't go from the higher end of the testicle down into the urethra to come out in the ejaculate. So there are both non-obstructive and obstructive causes of abnormal semen analysis and low sperm count.
Many men have absolutely no sperm in the ejaculate and yet they're not necessarily completely infertile when using certain infertility specialists. Many men have absolutely no sperm in their ejaculate but they are not necessarily infertile if they are subject to the proper treatments.
In the event that a man has a very low sperm count, he needs to undergo a very detailed and comprehensive physical examination by a urologist, and also a detailed endocrine evaluation that is checking certain hormone levels. Infectious disease levels are also checked and often a man's chromosomes are checked, especially the Y chromosome to determine if there are any abnormalities that have caused the man to be unable to produce sperm.
In cases in which the sperm is determined to be obstructed in its flow, then the urologist can often obtain sperm by, under anesthesia, placing a needle into the testicle and sampling the testicular tissue above the level of obstruction. In these cases, many pregnancies have been achieved by in vitro fertilization using that sperm.
Even a single sperm will often result in a pregnancy by injecting that one sperm into the egg and creating a viable embryo. In cases of mild abnormalities and sperm count, there are certain medications that can often induce a man to create more sperm. Some of these medications, for example clomiphene have been used in women too, to induce ovulation.
This medication stimulates the brain to stimulate the ovaries often causing sperm production to rise. These are the different treatments that can be used for men with poor semen analyses. They include medical treatments, lifestyle changes and surgical options.
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※ 編輯: ott 時間: 2013-11-27 18:09:19
※ 看板: ott 文章推薦值: 0 目前人氣: 0 累積人氣: 177
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