This equals around 4 cups of coffee a day, although do be aware that the amount of caffeine in beverages varies widely. Up to 400 milligrams of caffeine is was is considered to be safe, according to the Mayo Clinic. In some cases an overdose of caffeine can cause death due to convulsions. It is also possible to overdose on caffeine, although this is extremely rare. In some people, withdrawal may cause tremors.Withdrawal and OverdoseĬaffeine withdrawal is a side effect of drinking it excessively, your body learns to rely on it. Many consider coffee to be a health drink, but like most consumables, over indulging can cause side effects. These benefits are reserved for people who drink caffeinated coffee, not decaf. Recent studies have shown that people who regularly drink coffee (and therefore caffeine) are less at risk of developing Alzehimer’s disease of dementia but about 45%. Side effectsĬaffeine is safe from most adults, depending on health conditions, to consume when used appropriately, but it can come with some side effects, both positive and negative. But further study is necessary to confirm these early findings. Developing research seems to indicate that caffeine may actually harm voice quality. However, until recently, this recommendation was not based in research. People with disorders that affect the voice, singers, and other vocal professionals are often advised against consuming caffeine. To put this into perspective, it takes the majority of people around 8 cups of coffee providing 100 mg/cup to reach this urine concentration.Ĭaffeine can also come in the form of a cream, which is applied to the skin to reduce redness, puffiness, itching and dermatitis. Urine concentrations over 15 mcg/mL are prohibited. Within the limits, caffeine is accepted by the National Collegiate Athletic Association (NCAA) as an acceptable form of stimulation, unlike steroids. Some people find that caffeine helps with asthma, gallbladder disease, attention deficit-hyperactivity disorder (ADHD), low blood pressure and shortness of breath in newborns.Ĭaffeine is quite commonly used amongst athletes as stimulants. It is used with painkillers for simple headaches, migraines and preventing and treating headaches after epidural anesthesia. In this way, caffeine is consumed via liquid such as a coffee, tea or an energy drink.Ĭaffeine can be used by mouth or rectally in combination with painkillers, like asprin. Most commonly, caffeine is used to help ‘wake-up’ and improve on mental alertness, but also has other uses and purposes. ![]() But again, it may not have this effect in people who use caffeine regularly. It also increases urine flow and encourages bowel movement. Caffeine also raises blood pressure, but may not do this for people who are regular caffeine consumers. Caffeine is an extremely common chemical typically found in things like tea, coffee, coca-cola and other products.Ĭaffeine works by stimulating the central nervous system, heart, muscles, and the centers that control blood pressure.
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