Chronic illnesses that can affect sperm

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As the age of paternity rises in the developed world, issues of chronic disease may affect prospective fathers. Given the high prevalence of hypertension, researchers have begun to explore the relationship between hypertensive disease and male fertility. The current literature suggests an association between hypertension and semen quality.

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While some medications are safe to use before and during pregnancy, others can affect your chances of getting pregnant, cause problems during pregnancy, or harm your baby. All drugs and medications pass into the bloodstream. Some directly affect sperm or eggs and reduce fertility.

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Despite the vast quantity of sperm produced by a healthy man, the number of sperm which actually fulfil their fertilising potential is therefore extremely small. Even when a man is producing sperm at a healthy capacity and his partner is fertileit is not uncommon for couples to take up to a year to conceive. Some men produce sperm which is suboptimaleither in quantity or quality.

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As many as 40 percent of couples experience infertility associated with the male partner. Usually, a man must produce healthy, actively moving sperm cells. These specialized cells must pass freely from the testes, through the penis, and be capable of traveling through the uterus into the fallopian tubes.

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It takes two to make a baby. Although a woman will carry and deliver the child, a man also has a crucial role in pregnancy. For fertilization to occur, his sperm must be healthy and strong to reach and penetrate the woman's egg.

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New research has shown that a lack of protein in a father's diet affects sperm quality which can have a direct impact on the long-term health of their offspring. The study -- 'Paternal diet programs offspring health through sperm- and seminal plasma-specific pathways in mice' -- carried out at the University of Nottingham fed male mice a poor quality diet which resulted in their offspring becoming over weight, with symptoms of type 2 diabetes and reduced expression of genes which regulate the metabolism of fat. Researchers from the University of Nottingham's Schools of Medicine and Biosciences have published a report in PNAS showing that both sperm and the fluid they are carried in seminal plasma from male mice fed a low protein diet could affect the long-term metabolic health of their offspring.

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Up to 15 percent of couples are infertile. This means they aren't able to conceive a child, even though they've had frequent, unprotected sexual intercourse for a year or longer. In over a third of these couples, male infertility plays a role.

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Advanced male age negatively impacts fertility in a variety of ways, both directly and indirectly, including longer time to conception, decreased sperm quality, and increased risk for miscarriages and birth defects. The simple answer is yes. First, the older a man is, the longer it takes him to conceive a child.

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To examine the potential effects of lifestyle factors on male reproductive health. Evidence of a global decline in human sperm quality over recent decades has been accumulating. Environmental, occupational, and modifiable lifestyle factors may contribute to this decline.

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