Taber's Medical Dictionary
hunger
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A sensation resulting from lack of food, characterized by a dull or acute pain referred to the epigastrium or lower part of chest. It is usually accompanied by weakness and a desire to eat. Hunger pains coincide with powerful contractions of the stomach. Hunger is distinguished from appetite in that hunger is the physical drive to eat, while appetite is the psychological drive to eat. Hunger is affected by the physiological interaction of hormones and hormone-like factors;, appetite is affected by habits, culture, taste, and other factors.
HORMONES AFFECTING HUNGER
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