The major risks of oolong tea are the risks associated with drinking caffeine chronically or excessively. They include:
Caffeine can also cause complications for people with:
- Rapid heartbeat
- Palpitations
- Insomnia
- Nervousness
- Tremors
- Headaches
- Abdominal pain
- Nausea, vomiting, and diarrhea
- Increased urine flow
- Anxiety disorders
- Bleeding disorders
- Diabetes
- Irritable bowel syndrome
- Glaucoma
- High blood pressure
- Osteoporosis