How might male reproductive health suffer because of inadequate intake of antioxidant nutrients?
What will be an ideal response?
Antioxidant nutrients are needed to protect cells of the reproductive system, including eggs and sperm, from damage due to oxidative stress. Oxidative stress occurs when the production of potentially destructive reactive oxygen molecules (free radicals) exceeds the body's own antioxidant defenses. Reactive oxygen molecules attack polyunsaturated fatty acids in sperm membranes, which decreases sperm motility and reduces the ability of sperm to fuse with an egg. Once the membrane surrounding sperm is damaged, reactive oxygen molecules can enter the sperm cell and damage DNA. This can result in the passage of defective DNA.
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Which of the following is TRUE about multi-vitamin/multi-mineral (MVMM) supplements for older adults?
A) Many healthcare providers recommend an MVMM supplement for older adults, unless the older adult suffers from depression or dementia. B) Many healthcare providers recommend an MVMM supplement for older adults, as well as a high-potency single-nutrient supplement for vitamin C. C) Many healthcare providers recommend an MVMM supplement for older adults, as well as a single-nutrient supplement for vitamin B12. D) Because of the physiologic changes of aging, the Institute of Medicine recommends that all older adults take an MVMM supplement.
Most plant proteins are ________ proteins, which means that they are low in one or more of the essential amino acids.
A. complementary B. incomplete C. branched-chain D. nonessential
Adolescents are sometimes at risk for disordered eating because they ______
Fill in the blank(s) with the appropriate word(s).
Studies indicate that adequate _____ status helps prevent and decreases the severity of measles and other infectious diseases
a. vitamin B6 b. vitamin D c. vitamin A d. vitamin C e. vitamin K