Coffee promotes wakefulness and improves memory, concentration, and reaction time. According to some studies, coffee reduces the risk of Parkinson's disease, cardiovascular disease, Type 2 diabetes and Alzheimer's disease. It also reduces the symptoms of asthma, protects against liver disease and prevents the formation of gallstones.
Nutritional value
Coffee has no carbohydrates, protein or fat, but it does contain many antioxidants – as many as in green tea – which may protect from certain diseases. It has only two to three calories per cup – without milk or sugar – and contains fibre, magnesium and certain B vitamins.
Recommended intake
For coffee to provide health benefits, do not exceed four cups per day. Women who are trying to get pregnant, who are pregnant or who are breastfeeding should limit their intake to two cups per day.
Side effects
Those who consume more than four cups a day may experience side effects like insomnia, anxiety, irritability, headache, nausea, diarrhea and increased heart rate.
Avoiding coffee
In certain circumstances, it's best to avoid coffee. Such cases include those suffer from gastroesophageal reflux disease, peptic ulcer disease or irritable bowel syndrome.
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