• Caffeine is the most commonly consumed psychoactive substance in the world. Caffeine is a known stimulant. Drinking too much coffee can also have some adverse effects.
• When you drink coffee, you raise the level of acidity in your stomach. That’s often a good thing as an increased acid level helps with the digestion of food. Problems can arise when you drink too much coffee on an empty stomach. The overly acidic gastric juices can irritate the lining of the gut and cause heartburn.
• Coffee is best known for its ability to give drinkers some get up and go, but after three hours that borrowed energy has got up and gone. To keep the buzz going, you’ll need to drink more coffee. This tactic could eventually be a problem because drinking coffee too late in the day can disrupt the production of melatonin, the body’s primary sleep hormone.
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