Stopping certain neurodegenerative diseases such as Alzheimer's and Parkinson's.
The prevention and treatment of cancer.
Treating multiple sclerosis.
Preventing the degradation of cell membranes by neutralizing the spread of free radicals which occur during oxidation process.[dubious discuss]
Reducing the negative effects of LDL cholesterol (bad cholesterol) by lowering levels of triglycerides and increasing the production of HDL cholesterol (good cholesterol).
Joy Bauer, a New York City nutritionist, says [the catechins in green tea] increase levels of the metabolism speeding brain chemical norepinephrine (noradrenaline).
Japanese researchers claim that drinking five cups of green tea a day can burn 70 to 80 extra calories. Dr. Nicholas Perricone, a self-proclaimed anti-aging specialist, appeared on The Oprah Winfrey Show and told Oprah's viewers they can lose 10 lbs (4.5 kg) in 6 weeks drinking green tea instead of coffee.
Some green tea lovers commonly restrict their intake because of the stimulants it contains equivalent to about a third the amount of caffeine as is found in coffee[dubious discuss]. Too much caffeine can cause nausea, insomnia, or frequent urination.