Why do athletes take antioxidant supplements, and what concerns do experts have about them?
Aerobic exercise uses a lot of oxygen and speeds up metabolism, potentially producing more free radicals. Antioxidant supplements are thought to reduce the levels of damaging free radicals formed during athletic events. Studies suggest that free radical formation may stimulate the body's beneficial responses to physical activity. Antioxidant supplements may block or suppress the body's beneficial responses to exercise.
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Attitudes toward people who are obese tend to be:
a. negative. b. neutral. c. positive. d. mixed.
A painless lesion that develops on the site of syphilis infection is called a(n) ________
A) chancre B) bruit C) ulcer D) abscess
When protein consumption is in excess of body needs and energy needs are met, the excess amino acids are metabolized and the energy in the molecules is ____
a. stored as fat only b. excreted in the feces c. stored as amino acids only d. stored as glycogen and fat e. excreted in the urine
What does the Tolerable Upper Intake Level of a nutrient represent?
a. The maximum amount allowed for fortifying a food b. A number calculated by taking twice the RDA or three times the AI c. The maximum allowable amount available in supplement form d. The maximum amount from all sources that appears safe for most healthy people