Lipton Green Tea contains flavonoids, dietary compounds also called catechins. The United States Department of Agriculture, USDA, notes that these flavonoids help to speed up your metabolism so that you burn more calories throughout the day, helping you to lose weight.
Catechins
A cup of Lipton Green Tea contains 150 mg of flavonoids. While Lipton does not measure how many of these flavonoids are catechins, generally much of the flavonoids in green tea are catechins. Studies show that the combination of catechins with caffeine, also found in Lipton caffeinated teas, increases insulin activity and raises your metabolic rate. That means you oxidize or burn fat at a quicker rate.
Decaffeinated Green Tea
Caffeine is a stimulant that helps to increase the fat-burning properties of green tea. While they can still contribute to weight loss, decaffeinated versions of green tea, including Lipton Naturally Decaffeinated Green Tea, do not increase the metabolic rate, so the fat burning properties of the tea are reduced. Lipton Naturally Decaffeinated Green Tea also contains less flavonoids than the caffeinated version, which could mean that there are less available catechins in this type of tea, as well.
Milk
Health experts advise against adding milk to your green tea. One study has shown that milk proteins called caseins possibly bind to flavonoids, diminishing their effects and decreasing the bioavailability of catechins in the tea. This, in turn, decreases the fat burning effects of drinking green tea. Adding milk to tea in general also decreases the drink's effectiveness in reducing the risk of cancer and heart attacks.
Dosing and Precautions
Doctors at the University of Maryland Medical Center recommend drinking between two to three cups of green tea per day. They advise against drinking green tea for children as well as pregnant and breastfeeding women. They also warn that excessive amounts of caffeine, including caffeine found in green tea can cause irritability, insomnia, heart palpitations and dizziness. Green tea is considered an herbal drink that may interfere with other supplements and medication. You should speak to your medical practitioner if you have any pre-existing conditions.
References
- Lipton: Lipton Green Tea
- University of Maryland Medical Center: Green Tea
- Lipton: Lipton Natural Decaffeinated Green Tea
- United States Department of Agriculture: Brewing Up the Latest Tea Research
- European Heart Journal; Addition of Milk Prevents Vascular Effects of Tea; Mario Lorenz, et al.
- Journal of Physiology and Behavior; Green Tea Catechins, Caffeine and Body-Weight Regulation; M.S. Westerterp-Plantenga



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