Green Tea Thermogenesis
Metabolism Booster
Two studies about green tea thermogenesis or the heat burning process.
What is thermogenesis? It is the process by which the body generates heat and
increases metabolism. By burning off the extra calories, it promotes weight
loss.
Weight loss supplements such as ephedra and caffeine, stimulate thermogenesis.
Ephedra is great for increasing metabolism, but can have dangerous side effects.
It has been linked to heart attack and deaths.
Caffeine too raises metabolism and burns fat. But too much caffeine can cause
insomnia, anxiety, upset stomach and frequent urination for some people.
On the other hand, green tea is safe. It is the second most widely consumed
beverage in the world. Green tea thermogenesis is an effortless way to natural
weight loss.
Swiss scientist Dr. Dulloo conducted two human trials to investigate green
tea thermogenesis. He found that green tea extract increases thermogenesis to a
much greater extent than caffeine alone would.
The 1999 study consists of 10 healthy
men. They drank either green tea extract, caffeine or placebo.
The green tea extract beverage contained 90 milligrams of epigallocatechin
gallate (EGCG) and 50 milligrams of caffeine.
EGCG, found in the highest concentration in green tea, is the most active and
best researched of all green tea compounds.
Dr. Dulloo found that those who drank green tea extract burn 4% more energy
over 24 hours compared to the placebo. The increase in metabolism is greater
than that which could be explained by caffeine alone.
In another 2000 study, Dr. Dulloo went
on to confirm the important role of green tea extract in raising metabolism. He concluded that green tea stimulates thermogenesis "to an extent which is much greater than can be attributed to
its caffeine content per se."
No wonder green tea is a favourite ingredient in many weight loss products.
It has been found to increase and prolong the thermogenesis process.
So, green tea can help you burn 4% more energy a day. If you burn 2,000 calories a
day, this translates to 80 calories, roughly the same amount of calories in a
small banana.
It may not sound a lot, but green tea thermogenesis is not the only way green
tea helps lose weight. Green tea also promotes fat burning and reduces
absorption and storage of fat.
The sum total of these actions has not yet been quantified, but is likely to
be significant, especially when added up over a long period of time.
Green tea is all the more remarkable when you consider all the other health
benefits that it bestows.
Dulloo AG, Duret C, Rohrer D, Girardier L, Mensi N, Fathi M, Chantre P,
Vandermander (1999). Efficacy of a green tea extract rich in catechin
polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation
in humans. The American journal of clinical nutrition. 1999
Dec;70(6):1040-5.
Dulloo AG, Seydoux J, Girardier L, Chantre P, Vandermander J (2000). Green
tea and thermogenesis: interactions between catechin-polyphenols, caffeine and
sympathetic activity. International journal of obesity and related metabolic
disorders : Journal of the International Association for the Study of Obesity.
2000 Feb;24(2):252-8.
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