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Caffeine can be dangerous and Addictive Although caffeine is not considered a major drug, consequences of caffeine addiction can lead to mental and physical health problems.

Caffeine addiction is characterized by the craving of caffeinated products that include coffee, energy drinks, caffeine pills, and diet pills.
Caffeine is addictive and a stimulant for the nervous system. Regular use of caffeine can cause mild physical dependence, and caffeine doesn’t threaten a person the way other addictive drugs can. Since caffeine doesn’t cause serious withdraw, caffeine addiction is not considered a serious addiction.
Caffeine addiction can manifest in many ways, and every organ in the body is affected when too much caffeine is consumed. Consuming too much caffeine can cause nausea; headache, tremors, nervousness, and can affect sleep. Some other ["some" is redundant--"other" indicates an alternative, so "some," meaning unspecific, is not needed] life threatening manifestations that require medical treatments are hyperglycemia, electrolyte disturbance, and seizures. Caffeine can increase the heart rate and elevate blood pressure and can cause a heart attack or stroke.
Caffeine withdraw symptoms can last two to nine days, and include increased tiredness, irritability, less focus, depression, physical pain, and the desire for caffeinated drinks. These symptoms increase on day two, but decrease in day five. To reduce the effects of caffeine withdraw don’t just quit caffeine. Just quitting caffeine can cause side effects including headache, fatigue, and mood swings. To cut back on caffeine try substituting a cup of caffeinated coffee with decaffeinated. Gradually reducing the intake of caffeine will help with the withdraw symptoms while quitting caffeine.
Common sources of caffeine are tea, coffee, kola nuts, cocoa, and are the most common sources of caffeine. Caffeine content can range between four milligrams an ounce of chocolate syrup to as high as 160 milligrams for energy drinks (WebMD). Caffeine is also present in cold medication, diet pills, and pain relievers. Caffeine is a mild pain reliever, and will increase other pain reliever’s effectiveness.
Caffeine can interfere with sleep and is quickly absorbed and processed through the liver.” The average time it takes the body to absorb caffeine is five to ten hours, and 75% of caffeine is absorbed within 8 to 10 hours after consumption” (Pohler, Holly).
People that are [Writing suggestion: rewrite the sentence to remove "that are"] sensitive to caffeine can experience insomnia, nervousness, and upset stomach. Caffeine sensitive people can also experience agitation from lack of sleep due to [Check word usage: This phrase is most accurate in referring to something owed ($5 due) or an arrival time (due at 6:00)--try "because" or "because of"] caffeine use, and high heart rate and elevated blood pressure. Regular use of caffeine will eliminate caffeine sensitivity, but can increase the addiction to use caffeine regularly to stimulate the nervous system.
Caffeine addiction can cause health problems, and can increase calcium and magnesium loss in urine. Calcium that is lost in one cup of coffee can be replaced by adding two tablespoons of milk, or adding a calcium tablet to the diet. Caffeine can affect adults and youth and caffeine should be limited