Why do obese men tend to have low testosterone and elevated estradiol levels? Explain how this change in hormone levels affects male fertility.
What will be an ideal response?
Fat tissue contains an enzyme (aromatase) that converts testosterone to estradiol, and this conversion may be abnormally high in people with high body fat. Consequently, obese men tend to have low testosterone and elevated estradiol levels. Increased blood levels of estradiol inhibit secretion of luteinizing hormone (LH) and follicle stimulating hormone (FSH) by the pituitary. Alterations in LH and FSH can lower testosterone synthesis. Low levels of testosterone decrease sperm production and promote infertility and subfertility.
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A cobalt deficiency may lead to ____.?
A) ?pellagra B) ?megaloblastic macrocytic anemia C) ?beriberi D) ?neurologic symptoms
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Andrew Jamison is a 47-year-old construction worker with a long history of alcohol abuse. Recently he has been experiencing fatigue, weakness, loss of appetite, and weight loss. A visit to his physician and laboratory testing confirmed a diagnosis of cirrhosis. He is 5'10" tall and currently weighs 145 pounds
Of the following laboratory tests performed on Mr. Jamison, which one would you expect to see elevated? a. albumin b. transferrin c. ammonia d. HDL