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Taking in up to 400 mg or 4 cups of coffee does not cause issues for many people. However, caffeine affects people differently, depending upon their size, gender and level of sensitivity to it. If you're sensitive to caffeine, even moderate quantities can cause sleeping disorders (trouble sleeping), fast heart rate, stress and anxiety and sensations of restlessness.
What are the symptoms of having too much caffeine? Symptoms of having excessive caffeine may include: Headache, anxiety, lightheadedness. Having "the jitters" or feeling unsteady. Sleeping disorders or sleep that is "on and off" throughout the night. Racing heart or unusual heart beat. Increase in blood pressure. Dehydration. Who should avoid caffeine? It's not safe for everyone to have caffeine in their diet.
You may wish to prevent caffeine if you: Have any sleep condition, like sleeping disorders. Have ulcers or GERD. Are pregnant. Are breastfeeding. Have migraines or chronic headaches. Have high blood pressure. Take particular stimulants, prescription antibiotics, asthma medicines and heart medicines. These medications can have interactions with caffeine. Are a kid or teen.

Have a fast or irregular heart beat. Is caffeine addictive? Numerous individuals develop a tolerance for caffeine. You Can Try This Source means that your body changes and gets utilized to having caffeine every day. With time, you might discover that you need to keep increasing your caffeine consumption to accomplish the desired results of alertness and ability to concentrate.
It raises dopamine, however the level is small. Unlawful stimulants like methamphetamine ("meth") and MDMA ("euphoria" or "molly") cause a big surge that tinkers the benefit circuits in your brain. You get "addicted" to ecstasy, and "reliant" on caffeine. How long does caffeine last in the body? The effects of caffeine can be felt as quickly as 15 minutes after it is taken in.