Green tea has been credited with providing a wide variety of health benefits, many of which have not been validated by scientific evidence. These claims and any for which academic citations are currently missing are listed here:
• 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.
• 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. Too much caffeine can cause nausea, insomnia, or frequent urination.

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