What Causes Hiccups?

Sudden Changes In Temperature

Sudden changes in temperature, for example, walking out of a heated building into a bitterly cold day, can trigger hiccups. The source of temperature shifts can either be outside or inside the body. Extremely warm or cold food items introduced to the digestive system can cause contractions in the diaphragm, inducing hiccupping. Some individuals are more sensitive to sudden changes in temperature than others. The medical community is still unsure of the exact biological mechanisms involved in hiccups caused by temperature changes. For individuals especially sensitive to temperature shifts, it is best to plan accordingly to avoid hiccups.

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