Why Does My Heart Pound After I Eat?

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Heart palpitations, the feeling of a rapidly beating heart, pounding heart or irregular heartbeat, are common after indulging in a meal that is rich in carbohydrates, sugar or fat, notes WebMD. This is due to the rapid changes in blood sugar that occur after such a meal and the fact that more blood is pumped to the digestive tract to aid in digestion, according to MDhealth.com.