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What
is Caffeine ?
An alkaloid stimulant found in tea leaves and coffee beans.
Present in coffee to the extent of about 4%. It stimulates both
the heart and respiratory systems yet relaxes smooth muscle...for
what its worth.
Caffeine : 1,3,7-trimethylxanthine,
(a methylated purine derivative).
How
much caffeine is present in a cup of coffee ?
Average amounts of caffeine in a (7 oz) of coffee :
- Drip
~ 115-175mg
- Espresso ~ 100mg per serving
(1.5-2oz)
- Brewed
~ 80-135mg
- Instant
~ 65-100mg
- Decaf,
brewed ~ 3-4mg
- Decaf,
instant ~ 2-3mg
- tea,
iced (12oz) ~ 70mg
- tea,
brewed ~ 40-60mg
- tea
instant ~ 30mg
The following is the caffeine
content in mg per 330ml can drink:
- Mountain Dew ~ 55mg
- Coke/Diet Coke ~ 45.6mg
- Pepsi ~ 37.2mg
- Diet Pepsi ~ 35.4mg
Does caffeine have any effects on pregnant
women ?
Caffeine has long been suspect of causing mal-formations in fetus,
and that it may reduce fertility rates. These reports have proved
controversial. On men, it has been shown that caffeine reduces
rates of sperm mobility which may account for some findings of
reduced fertility.
What are the side-effects of caffeine
?
A major study has found fewer suicides among coffee drinkers than
those who abstained from the hot black brew. This is not a fluke
finding because the study was very large, involved a multiracial
population, men, women, and examined closely numerous factors
related to mortality such as alcohol consumption and smoking.
The unique survey also found no link between coffee consumption
and death risk. And it confirmed a 'weak' connection of coffee
or tea to heart attack risk -- but not to other cardiovascular
conditions such as stroke.
What
are the effects of caffeine on your metabolism ?
Caffeine increases the level of circulating fatty acids. This
has been shown to increase the oxidation of these fuels, hence
enhancing fat oxidation. Caffeine has been used for years by runners
and endurance people to enhance fatty acid metabolism. It's particularly
effective in those who are not habitual users.
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