Can eating mulberries cause “internal heat”?

Ripe mulberries are lustrous, juicy, and pleasantly sweet-and-sour. The best-quality mulberries are large in size, thick-fleshed, deep purple-red in color, and rich in sugar content. So, can eating mulberries cause “internal heat” (a traditional Chinese medicine concept referring to excessive internal body heat)?

Can eating mulberries cause “internal heat”?

Excessive consumption of mulberries may indeed trigger “internal heat,” manifesting as symptoms such as oral or tongue ulcers, toothache, and dry mouth or throat.

Mulberries are not only a delicious and sweet fruit but also possess certain medicinal properties. In traditional Chinese medicine (TCM), they are classified as “cold” in nature and associated with the Heart, Liver, and Kidney meridians. Although mulberries offer numerous health benefits, their intake should be moderated. In addition to mulberries, one should consume a variety of other fresh vegetables and fruits to ensure balanced nutrition. Regular physical exercise is also recommended to enhance immune function.

Mulberries can be steeped in wine or fermented into mulberry enzyme. However, adverse effects—such as those caused by overconsumption—can occur regardless of preparation method (e.g., soaking in water, fermenting into wine, or eating raw). Mulberries contain hemolytic allergens and hyaluronic acid; excessive intake may lead to hemolytic enteritis. Another common side effect of overconsumption is “internal heat.” Individuals with mulberry allergies may experience diarrhea, facial flushing, and swelling or itching in the ears, nasal passages, and pharynx. Therefore, moderation is essential—avoid overindulgence.

When consuming mulberries, ensure they are thoroughly washed. Avoid eating large quantities at once, as mulberries are considered a “cold” food in TCM. Additionally, maintain adequate rest. We hope this article has been helpful!