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his is What 2 Cups of Coffee Per Day Will Do To Your Liver


The health effects of coffee are quite controversial.

Depending on who you ask, it is either a super healthy beverage or incredibly harmful.

But despite what you may have heard, there are actually plenty of good things to be said about coffee.

For example, it is high in antioxidants and linked to a reduced risk of many diseases.

However… it also contains caffeine, a stimulant that can cause problems in some people and disrupt sleep.

This article takes a detailed look at coffee and its health effects, examining both the pros and cons.

Coffee Contains Some Essential Nutrients and is Extremely High in Antioxidants

Coffee is more than just dark brown water… many of the nutrients in the coffee beans do make it into the drink.

A typical 8oz (240 ml) cup of coffee contains (1):

  • Vitamin B2 (Riboflavin): 11% of the RDA.
  • Vitamin B5 (Pantothenic Acid): 6% of the RDA.
  • Vitamin B1 (Thiamin): 2% of the RDA.
  • Vitamin B3 (Niacin): 2% of the RDA.
  • Folate: 1% of the RDA.
  • Manganese: 3% of the RDA.
  • Potassium: 3% of the RDA.
  • Magnesium: 2% of the RDA.
  • Phosphorus: 1% of the RDA.

This may not seem like a lot, but try multiplying with 3, 4, or however many cups you drink per day. It can add up to a significant portion of your daily nutrient intake.

But where coffee really shines is in its high content of antioxidants.

The average person who eats a typical Western diet actually gets more antioxidants from coffee than fruits and vegetables… combined (2, 3).

Bottom Line: Coffee contains

Coffee Contains Caffeine, A Stimulant That Can Enhance Brain Function and Boost Metabolism

Caffeine is the most commonly consumed psychoactive substance in the world (4).

Soft drinks, tea and chocolate all contain caffeine, but coffee is the biggest source.

The caffeine content of a single cup can range from 30-300 mg, but the average cup is somewhere around 90-100 mg.

Caffeine is a known stimulant. In the brain, it blocks the function of an inhibitory neurotransmitter (brain hormone) called Adenosine.

By blocking adenosine, caffeine actually increases activity in the brain and the release of other neurotransmitters like norepinephrine and dopamine. This reduces tiredness and makes us feel more alert (5, 6).

There are numerous studies showing that caffeine can lead to a short-term boost in brain function… including improved mood, reaction time, vigilance and general cognitive function (7, 8).

Caffeine can also boost metabolism (calories burned) by 3-11% and even increase exercise performance by 11-12%, on average (9, 10, 11, 12).

However… some of these effects are likely to be short-term. If you drink coffee every day, then you will build a tolerance to it and the effects will be less powerful (13).

There are also some downsides to caffeine, which I’ll get to in a bit.

Bottom Line: The main active compound in coffee is the stimulant caffeine. It can cause a short-term boost in energy levels, brain function, metabolic rate and exercise performance.

Coffee May Help Protect Your Brain in Old Age, Leading to Reduced Risk of Alzheimer’s and Parkinson’s

Alzheimer’s disease is the most common neurodegenerative disease and a leading cause of dementia.

Studies have shown that coffee drinkers have up to a 65% lower risk of developing Alzheimer’s disease (14, 15, 16).

Parkinson’s is the second most common neurodegenerative disease and caused by the death of dopamine-generating neurons in the brain.

Coffee drinkers have a 32-60% lower risk of Parkinson’s disease. The more coffee people drink, the lower the risk (17, 18, 19, 20).

Bottom Line: Several studies show that coffee drinkers have a much lower risk of dementia, Alzheimer’s disease and Parkinson’s disease in old age.

Coffee Drinkers Have a Much Lower Risk of Type 2 Diabetes


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