Caffeine is a central nervous system stimulant. It's one of the most popular drugs in the world, consumed by up to 90% of people in the world in different form
Caffeine is a stimulant of the central nervous system (CNS), the cardiac muscle increases heart rate, and respiratory system -relaxes air passages permitting improved inhalation, and allows some muscles to contract more easily. It acts as a diuretic it increases the rate of bodily urine excretion, and delays fatigue having the effect of warding off drowsiness and restoring alertness. Caffeine absorption occurs in the body very quickly. It enters the bloodstream through the stomach and small intestine, and its effects are felt as soon as 15 minutes after consumption. It is completely absorbed within 45 minutes of intake. Caffeine does not accumulate in the bloodstream nor it is stored in the body, but it does persist but only about ½ is eliminated in the urine within 6 hours. Caffeine sensitivity refers to the amount of caffeine that will produce negative side effects in a particular person. Regular caffeine consumption reduces sensitivity to caffeine, and a higher intake is needed for the same effects. So caffeine is considered to be an addictive drug.
0 comments: