The phrase
“anorexia of aging” refers to the decreased appetite experienced by older
adults, and is common among 15-20 % of the elderly. A decreased appetite may
sound like a good thing to some, but the unintentional weight loss may be
especially detrimental to the health of seniors. Previously, it was believed
that the anorexia of aging was due to a decrease in the hormone ghrelin,
which stimulates the feeling of hunger, but new research suggests the appetite
reduction may stem from an increase in a satiety (fullness) hormone
peptide YY. In this study older adults demonstrated a greater production of PYY
compared to a younger age group, while the levels of GLP-1 and ghrelin remained
similar between the two groups. Based on this study, it can be hypothesized
that greater levels of PYY contribute to undernutrition and weight loss among
older adults. Knowing which hormone to target can potentially be useful in
treating, or managing the anorexia of aging.
See the full article at: http://www.medicalnewstoday.com/articles/312190.php
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