Scientific studies have examined the relationship between coffee consumption and an array of medical conditions. Most studies are contradictory as to whether coffee has any specific health benefits, and results are similarly conflicting regarding negative effects of coffee consumption.
Coffee appears to reduce the risk of Alzheimer's disease, Parkinson's disease, heart disease, diabetes mellitus type 2, cirrhosis of the liver, and gout. Some health effects are due to the caffeine content of coffee, as the benefits are only observed in those who drink caffeinated coffee, while others appear to be due to other components. For example, the antioxidants in coffee prevent free radicals from causing cell damage.
Coffee's negative health effects are mostly due to its caffeine content. Research suggests that drinking caffeinated coffee can cause a temporary increase in the stiffening of arterial walls. Excess coffee consumption may lead to a magnesium deficiency or hypomagnesaemia, and may be a risk factor for coronary heart disease. Some studies suggest that it may have a mixed effect on short-term memory, by improving it when the information to be recalled is related to the current train of thought, but making it more difficult to recall unrelated information.Nevertheless, the mainstream view of medical experts is that drinking three 8-ounce (236 ml) cups of coffee per day (considered average or moderate consumption) does not have significant health risks for adults.
Caffeine content
Depending on the type of coffee and method of preparation, the caffeine content of a single serving can vary greatly. On average, a single cup of coffee of about 207 milliliters (7 fluid ounces) or a single shot of espresso of about 30 mL (1oz) can be expected to contain the following amounts of caffeine:[59][60][61]* Drip coffee: 115–175 mg
* Espresso: 40 mg
* Brewed/Pressed: 80–135 mg
* Instant: 65–100 mg
* Decaf, brewed: 3–4 mg
* Decaf, instant: 2–3 mg
Me and my sister are certified coffeeholics. Honestly, it is very inevitable for me to stop drinking coffee. Some would say that coffee is one of the causes of the yellowing of teeth. I think, we can avoid yellowing teeth or cavity build-up if we brush our teeth regularly, flossing after meal, and gargling a mouth wash. I haven't missed any appointment with my dentist (Saint Petersburg-based). Maybe this is the reason why I haven't encountered an oral problem. If you want to maintain your healthy teeth, it is advisable that we visit our trusted dentists (St. Petersburg).
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