
The use of green tea is currently on the increase partly due to
new research studies which are providing convincing evidence about its
antioxidant abilities, general health benefits, and more interestingly,
its weight loss effects
While
weight loss teas may be growing in popularity today, green tea however
remains the major focus given its historical background and proven
effectiveness. Despite the fact that it is today considered an effective
weight loss supplement, it would however be interesting unraveling what
it is that actually gives it this ability.
Fortunately, there are
a lot of research studies available today which give compelling
information about the various mechanisms through which green teas aid
weight loss.
1. EGCG and Caffeine Metabolism Boosting Effects
Several of these research studies have demonstrated that green teas
have the ability to speed up the body's metabolic rate by up to 4%. This
seemingly insignificant boost in metabolism can however with little or
no effort than just drinking 2-4 cups daily help to burn stored body
fats and reduce fat storage. Over time, this 4% boost in calorie burning
can substantially increase an individual's overall fat burning
capability.
Green tea's metabolism boosting effect is achieved by
the inhibiting action of its most active ingredient epigallocatechin
gallate (EGCG) on the activity of the enzymes that breakdown the
neurotransmitter known as norepinephrine making it last longer.
Norepinephrine (NE) is generally considered to be a sympathetic nervous
system stimulant which increases the state of many of the body's
processes and sends the nervous system into a state of shock.
The
effect of norepinephrine increases the process of thermogenesis - the
generation of heat in the body. Thermogenesis is generally considered to
increase the body's energy expenditure while also having a significant
effect on body fat oxidation.
Initially, this effect was
attributed to the caffeine content which is about 25mg for a 6-ounce
cup. However, a 1999 study publication in the American Journal of
Clinical Nutrition revealed that the use of green tea extracts did not
only promote thermogenesis, but unlike caffeine which arouses the
nervous system and speeds up heart beat when used alone, it was "not
accompanied by an increase in heart rate."
This normalized heart
rate has been found to be the effect of another very rare but naturally
occurring amino acid in green tea known as L-theanine. The L-theanine is
secreted from the small intestine into the bloodstream where it is
transported into the brain producing a state of improved relaxation and
alertness. This action effectively cancels out the harmful effect of
caffeine.
The combination of caffeine and L-theanine in green tea,
have been suggested by several research to significantly help to
improve alertness, reaction time, and memory while also combating the
effects of stress.
2. Reduced Blood Sugar and Insulin Levels
They are also known to be effective in reducing blood sugar levels
which consequently reduces the secretion of insulin. Research studies
also indicate that green tea, Oolong and black teas increases insulin
sensitivity by more than 15%.
The lowering of insulin secretion
through the reduction of blood sugar levels is mostly regarded as the
major reason why it actually have significant weight loss effects. The
more green tea you drink, the lower your insulin levels and the more
sensitive they become. This combined effect not only increases your
body's ability to convert sugars into energy but also its fat burning
capabilities.
3. Triglyceride and Cholesterol Reduction
Green tea also has the ability to reduce blood fats such as
triglycerides and cholesterol. They also help to stop blood clots from
forming which could partially or completely block arteries or veins.
The
epigallocatechin gallate (EGCG) help to reduce LDL "bad" cholesterol
while increasing HDL "good" cholesterol levels. EGCG essentially clears
the blood of triglycerides before they are deposited into adipose
tissues (fat cells). This is important because triglycerides are
generally transported in the bloodstream in the form of very low-density
lipoprotein (VLDL) which is eventually converted into LDL "bad"
cholesterol. Therefore, the fewer the amounts of triglycerides in the
bloodstream, the lower will be the levels of LDL "bad" cholesterol.
4. Appetite and Cravings Suppression
It has also been proven that green tea also help to suppress
appetite and eliminate cravings for sweet snacks. This can partly be
attributed to its ability to lower blood sugar levels.
High blood
sugar levels generally make you feel hungry and thus increase the
tendency to eat more food more frequently. By reducing your blood sugar
levels, green tea effectively helps to suppress the appetite.
It
therefore becomes obvious, taking the above points into consideration,
why the use of green tea as a supplement to weight loss is increasing
today. However, while green tea in and of itself can result in weight
loss, for quicker and permanent weight loss effect it is advisable to
use it as a supplement to a healthy diet and regular exercise program.
Equally,
not all teas are made equal and not all provide the desired effects. To
get the best possible weight loss effect from green teas, it is highly
recommended to get reputable brands such as Tava Tea.
The simplest way to safely and effectively slim down is usually
to get hold of and start using an established product that really give
good results. Get more insightful and unprejudiced info about
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