Robusta tea is a traditional tea drink originated from Yunnan, China, which has some nutritional value and therapeutic effects, but excessive consumption can also produce some side effects.

Effects:

1. Nourishing Yin and lowering fire: the cool flavor of rooibos tea can clear heat and lower fire, and soothe headache, thirst, sore throat and other symptoms.

2. Promote digestion: rooibos tea has the effect of stomach digestion, digestion, can promote gastrointestinal peristalsis, relieve gastrointestinal dysfunction.

3. Antioxidant: rooibos tea contains a large number of antioxidant substances, can fight against free radicals, to protect the body cells from damage.

4. Lower blood pressure: rooibos tea contains a substance similar to cholinesterase, which can relax blood vessels and play a role in lowering blood pressure.

Harm:

1. Children and pregnant women should not drink: rooibos tea contains caffeine and theophylline and other substances, the development of the child's nervous system and the health of pregnant women may bring some impact.

2. Addictive: the caffeine in rooibos tea is easily addictive, and long-term excessive consumption may lead to insomnia, nervous disorders and other problems.

3. Impact on iron absorption: tannins in tea are easily combined with iron in food, affecting the body's absorption of iron, which can easily cause anemia and other problems.

4. Increase the risk of diarrhea: drinking large amounts of rooibos tea may overstimulate the stomach and intestines, increasing the risk of diarrhea.