Which of the following is a feature of androstenedione use in athletes?
a. It is a dangerous alternative to anabolic steroid use.
b. It is synthesized in the body by the thyroid gland.
c. It leads to testicular enlargement and liver atrophy.
d. It reduces free radical formation and slows the aging process but does not enhance performance.
e. It is generally safer than anabolic steroids and human growth hormone.
ANS: A
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Indicate whether the statement is true or false
Which statement describes a feature of iron nutrition in vegetarians?
a. Vegetarians adapt to absorbing iron more efficiently. b. Iron utilization is inhibited by the high zinc content in grains c. The absorption of iron is low due to the high vitamin C intake. d. More iron deficiency is found in vegetarians than in people eating a mixed diet. e. There are no differences in iron intake or utilization in vegetarians.
Why may endurance athletes have higher iron requirements than nonathletes?
The United States produces ___ percent of the world's soybeans.
A. 10 B. 25 C. 30 D. 50