Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Protein is scientifically recognized for its role in appetite regulation, particularly in individuals with deficient appetite. Research indicates that dietary protein can stimulate the release of satiety hormones such as peptide YY (PYY) and glucagon-like peptide-1 (GLP-1), which help reduce hunger and promote a feeling of fullness. However, in the context of deficient appetite (hyporexia or anorexia), protein intake is often emphasized as part of nutritional rehabilitation rather than as a direct appetite stimulant. Clinical guidelines for malnutrition and cachexia (wasting syndrome) recommend increased protein intake to help preserve lean body mass and support metabolic needs, especially when appetite is reduced. Some studies have shown that protein supplementation, particularly in the form of oral nutritional supplements, may help improve overall caloric and protein intake in people with poor appetite, such as elderly individuals or patients with chronic illnesses. Although protein itself is not typically classified as an "appetite stimulant" (unlike certain medications or herbal remedies), its inclusion in the diet is a cornerstone of managing deficient appetite because it supports nutritional status and may indirectly improve appetite by preventing further physical decline. Thus, while protein does not directly "treat" deficient appetite, scientific evidence supports its use as a supportive measure in populations where appetite is compromised.

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