Caffeine impacts everything from sleep quality to concentration and heart rate. Learn how long withdrawal takes, the diuretic effects on the body, and the potential risks of taking caffeine tablets with medication or alcohol.
Shingles, a condition also known as herpes zoster, stems from the same virus the causes chickenpox. This virus, the varicella-zoster virus, lies dormant in your nerves and may then flare up, typically in older adults or people with a compromised immune system.
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Many foods and beverages -- including coffee, tea and chocolate --contain caffeine. Although caffeine will not likely cause serious health complications, its use may cause symptoms such as increased heart rate, shaky hands and anxiety.
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