Sperm volume testosterone

The social environment can have dramatic influences on reproductive behavior and physiology in many vertebrate species. In males, interactions with conspecifics affect physiological processes that increase an individual's ability to compete for mates. For example, in some species, males rapidly adjust the number of sperm they ejaculate in response to sociosexual cues from male and female conspecifics, however, little is known about the physiological mechanisms mediating this behavior. In goldfish, as in many vertebrates, social cues also drive transient surges of the gonadal hormone testosterone T , which induces rapid effects on cellular processes via its conversion to estradiol E2. We asked whether such surges rapidly influence ejaculate quantity and quality by experimentally manipulating peripheral levels of T and E2.

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Steps in the investigation and management of low semen volume in the infertile man

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Low sperm count - Symptoms and causes - Mayo Clinic

Lots of guys worry about whether the volume of their ejaculate is cause for concern, says Daniel Williams, M. According to parameters developed by the National Institute of Health, normal semen volume ranges from 1. Semen volume is essentially the amount of semen you produce during ejaculation. However, keep in mind that semen volume isn't consistent and generally declines with age, according to Everyday Health. Williams says. Just as erectile function declines with age , ejaculation volume follows a similar course, Dr. In fact, Israeli researchers found that men older than 55 experienced the most significant decline in semen volume and quality.
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Sperm and Testosterone: A Love-Hate Relationship

It affects about one in every six couples, and researchers estimate about one in every three cases is due to fertility problems in the male partner alone 1 , 2. While infertility is not always treatable, it can sometimes be improved with a healthy diet, supplements and other lifestyle strategies. This article lists some of the main lifestyle factors, foods, nutrients and supplements that have been associated with improved fertility in men.
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Reuters Health - In a four-month trial, testosterone therapy did not improve ejaculation problems in men with low testosterone levels. Sexual dysfunction in men generally falls into three categories, Basaria told Reuters Health: problems with libido, problems with erections and problems with ejaculation. Ten to 20 percent of men coming to doctors with some form of sexual dysfunction report problems with ejaculation, he said. Basaria and colleagues studied 76 men with symptoms of ejaculatory dysfunction, like delayed ejaculation, inability to ejaculate, reduced ejaculate volume or reduced force of ejaculation.
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