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According to estimates by the World Bank, approximately how many people receive insufficient nourishment to support normal activity and work?
Hormones
Chemical messengers produced by the endocrine glands that regulate various bodily functions and processes.
Glands
Organs in the body that secrete hormones or other substances directly into the blood or surrounding tissues.
Organs
Structures composed of different tissues that perform specific functions within an organism, such as the heart, liver, or lungs.
Melatonin
A hormone produced by the pineal gland that regulates sleep-wake cycles.
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