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The Curious Bag
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A human male's ability to achieve full or sustained erection may decline due to various health or lifestyle issues. Some of these factors may respond to lifestyle changes, while others make up part of the natural aging process.
Nerve Changes
According to the AskMen.com, the body tends to lose nerve connections over the years. Aging can cause a reduction of nerve responses and sensitivity in the penis, affecting erectile function.
Hormonal Changes
Hormone production declines when men reach middle age. The reduction in DHEA and testosterone can affect the sex drive.
Alcohol
Alcohol abuse can cause many health problems, including erectile and orgasm dysfunctions. Alcohol can alter the body's nitric oxide levels, interfering with blood flow into the penile tissues.
Stress
AskMen.com notes that stress can have a direct affect on testosterone levels and blood flow. A high-stress lifestyle or personal crisis can lead to erectile problems.
Disease
Cardiovascular diseases such as atherosclerosis can cause blood vessels to perform poorly, making full erection difficult or impossible, according to the Mayo Clinic.
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