Which fruits, when consumed, can cause black stools?

Eating fruits such as cherries, dragon fruit, and mulberries may cause black stools.

1. Cherries

Cherries are a common fruit rich in natural red pigments. These pigments are not absorbed by the human body upon entering the intestines. When consumed in large quantities, they may appear dark red or black and be excreted with feces. Stool color typically returns to normal after discontinuing cherry consumption, and this poses no health risk.

2. Dragon Fruit

Dragon fruit contains numerous small black seeds. If consumed in excess, these seeds may pass through the digestive tract undigested and be excreted with stool, resulting in black-colored stools. This phenomenon is harmless and does not require concern.

3. Mulberries

Mulberries are typically deep purple or black due to their plant-derived pigments. After ingestion, these pigments can stain the stool black. Once the plant pigments are fully eliminated from the body, stool color will return to normal.