Caffeine is present in Coffee, Cocoa and Tea.

Mechanism of action: Caffeine gives stimulation to the brain and causes more secretion of adrenaline and nor adrenaline which in turn stimulates nervous system.

Effects of Caffeine on Health:

When taken in small quantities:

1. It stimulates heart muscles.
 

2. It increases blood circulation.
 

3. It temporarily increases blood pressure.
 

4. It increases secretions in the stomach.

When Caffeine is taken in large quantities:

1. It increases heart rate.
 

2. It decreases sleeping tendency, headache and displeasure.
 

3. Causes diarrhea and frequent urination.

Caffeine Addiction: Taking Caffeine in moderate amounts (2-3 cups of coffee) cause no ill effects on the body. Due to increased stressful work hours, caffeine addiction is gradually rising.

If a habituated person stops taking caffeine, with drawl symptoms develop in the body.

With drawl symptoms of the Caffeine:

1. Fatigue, anger and despair.

2. Depression and changing of moods.
 

3. Sleeplessness and loss of tolerance power.

These signs and symptoms begin to appear after 12-24 hours after stopping the caffeine intake. In order to prevent with drawl symptoms, one had to reduce caffeine intake gradually.

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