Behavioural Eating Habits, HIV and Breast-Feeding
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1. What is the relationship between genetics and behavioral eating habits? In which stages of the lifecycle is nutrition more important? How might current choices affect future health? Provide a rationale for your answers. How is the effect of nutrition on growth, development, and learning different during the various stages of life?
2. HIV, the virus that causes AIDS, passes through breast-feeding to 1 in 7 infants born to HIV-infected mothers. However, in developing countries, some HIV-positive women are advised to breast-feed. Explain this advice, considering what you know about the benefits of breast-feeding.
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This solution discusses behavioral eating habits, HIV, and breast feeding.
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1. What is the relationship between genetics and behavioral eating habits? In which stages of the lifecycle is nutrition more important? How might current choices affect future health? Provide a rationale for your answers. How is the effect of nutrition on growth, development, and learning different during the various stages of life?
According to a study conducted by Jose Ordovas, PhD, director of the Nutrition and Genomics Laboratory at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University (USDA HNRCA) (Bad Eating Habits: It May Be In You Genes), he found that the gene named polipoprotein A-II gene (APOA2) is associated with fat, carbohydrate, protein, and calories in the diet (which, in turn relates to the body mass index or BMI). He discovered that this gene has a link to the foods that people choose, particularly dietary fat, and his shapes their behavior eating habits.
"This study adds to our understanding of the relationship among nutrition, genetics, and obesity," says Ordovas. "Nutrients from the foods we eat activate proteins in our body, which in turn bind to promoter regions, like the APOA2 promoter. These promoters then tell our genes how to behave." "Understanding these relationships may help to shape future recommendations for prevention of undesirable health outcomes, especially in populations that may be genetically vulnerable to certain dietary patterns or specific nutrients" (Bad Eating Habits: It May Be in You Genes).
This explains how genetics influence eating habits. Try not to confuse this with lifestyle or environmental influences ...
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