Dry heaving, or retching, is a sensation involving gagging and forceful, vomiting-like contractions. Older adults may experience dry heaving for various reasons. Dry heaving differs from vomiting in ...
In most cases, the presence of toxins in food can cause nausea and vomiting. These are bodily defenses aimed at minimizing the duration of exposure to the toxin. The pathways by which the brain ...
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