Black Oolong Tea is a category of Oolong Tea, known for its outstanding effects in fat breakdown, weight loss, fitness, and anti-aging, often referred to as "Beauty Tea" or "Fitness Tea." Although Black Oolong Tea has remarkable health benefits, excessive consumption can lead to a series of side effects.

Black Oolong Tea Side Effect 1: Affects Sleep
Black Oolong Tea has a refreshing effect, but excessive consumption can cause insomnia. It is best not to drink it before bedtime to avoid affecting sleep.

Black Oolong Tea Side Effect 2: Affects Iron Absorption
Although Black Oolong Tea has excellent health benefits, prolonged and excessive consumption can impair the body's ability to absorb iron, potentially leading to iron deficiency anemia in severe cases.

Black Oolong Tea Side Effect 3: Affects Digestion
Drinking large amounts of Black Oolong Tea can dilute stomach acid, reducing its concentration and impairing normal digestion, leading to symptoms like indigestion and abdominal pain, especially when consumed on an empty stomach.

Black Oolong Tea Side Effect 4: May Cause Diarrhea
For those with weak constitutions or poor digestive systems, Black Oolong Tea can irritate the stomach, leading to diarrhea.

Regardless of the type of tea, even with excellent benefits, it should not be consumed excessively or blindly, as it may lead to adverse effects.