How Much Coffee Should I Drink Daily?

Posted on Jul 22, 2019

By J.D. Phillips

Coffee, believe it or not, may have more positive health benefits than you might think.

This may surprise you given that many reports have been published about how harmful coffee can be, but of course, ‘everything in moderation’ as the old adage goes.


Caffeine kick

There is of course the benefit of increasing energy levels and making you feel less tired due to the caffeine,1,2, the most commonly used psychoactive substance in the world3, but that’s pretty common knowledge. Drinking coffee gets caffeine into your bloodstream which then enters the brain,4 and once there it blocks an inhibitory neurotransmitter called Adenosine. After that, the amount of other neurotransmitters such as norepinephrine and dopamine actually increase, leading to enhanced firing of neurons. 5, 6

There have been many controlled trials in humans that show how coffee improves various aspects of brain function, including memory, mood, vigilance, energy levels, reaction times and general cognitive function.7, 8, 9

Fat burning

But, did you know that caffeine is found in almost every fat burning supplement? The reason for this is that coffee has been proven to help increase the metabolic rate by between 3 and 11%, which in turn speeds up the burning of fat and calories.10,11

Physical performance enhancer

Another interesting point is that caffeine can drastically improve physical performance by stimulating your nervous system, causing it to send signals to the fat cells to break down body fat 12, 13 and it also increases Epinephrine (Adrenaline) levels in the blood 14, 15 which is the “fight or flight” hormone, designed to make our bodies ready for intense physical exertion.

Beneficial nutrients

Another positive fact about coffee is that it contains a whole host of nutrients, each of which has its own particular benefits. A single cup of coffee contains the following 16:

Riboflavin (Vitamin B2): 11% of the RDA.

Pantothenic Acid (Vitamin B5): 6% of the RDA.

Manganese and Potassium: 3% of the RDA.

Magnesium and Niacin (B3): 2% of the RDA.


Considering type 2 diabetes is such an enormous worldwide health problem currently afflicting about 300 million people, it’s also very good to know that coffee may lower your risk of type 2 diabetes which is characterized by elevated blood sugars in the context of insulin resistance or an inability to secrete insulin. For some reason, coffee drinkers have a significantly reduced risk of developing type 2 diabetes as has been shown in studies of people who drink the most coffee have a 23-50% lower risk of getting this disease, one study showing a reduction as high as 67%. 17-21

Alzheimer’s and dementia

A perhaps slightly surprising potential benefit from coffee is its potential to protect against Alzheimer’s Disease and Dementia.

Alzheimer’s disease is the most common neurodegenerative disease and the leading cause of dementia worldwide, normally affecting people over 65 years old and without a known cure. There are plenty of guides on healthy eating and exercising to try to minimize the risk, but it has been shown in tests that coffee drinkers have up to a 65% lower risk of developing Alzheimer’s. 22,23

Parkinson’s disease

Another disease which is widespread and debilitating, usually also in the older age group, is Parkinson’s disease: the second most common neurodegenerative disease after Alzheimer’s and is caused by the death of dopamine-generating neurons in the brain. As with Alzheimer’s, there is no known cure, which makes it that much more important to focus on prevention. Interestingly, studies have shown that coffee drinkers (caffeinated, not de-caffeinated) have a much lower risk of developing Parkinson’s disease, with a reduction in risk ranging from 32-60%. 24-27

Liver disease

Coffee, it would seem, also has protective effects on the Liver. An incredibly important organ which is often subject to several common diseases, including hepatitis, fatty liver disease and others, many of which can lead to a condition called cirrhosis, in which the liver has been largely replaced by scar tissue. According to several studies, coffee may protect against cirrhosis with people who drink 4 or more cups per day having up to an 80% lower risk. 28-30


Depression is a serious mental disorder that causes a significantly reduced quality of life and is incredibly common, with about 4.1% of people in the U.S. currently meeting the criteria for clinical depression. In a Harvard study published in 2011, women who drank 4 or more cups per day had a 20% lower risk of becoming depressed. 31 A further study which included 208,424 individuals found that those who drank 4 or more cups per day were 53% less likely to commit suicide. 32


When it comes to diseases, it seems coffee has far more benefits than we could have imagined, with cancer being another hideous disease which coffee might be able to help with. Coffee appears to be protective against at least two types of cancer: liver cancer and colorectal cancer, though some have claimed it protects against 10 different types of cancer. Liver cancer is the third leading cause of cancer death in the world, while colorectal cancer ranks fourth. 33 Studies show that coffee drinkers have up to a 40% lower risk of liver cancer 34,35, whilst one study showed that those who drank 4-5 cups of coffee per day had a 15% lower risk of colorectal cancer. 36

Heart disease and blood pressure

There have often been claims that caffeine can increase blood pressure, which is actually true, but the effect is very small (3-4 mm/Hg) and usually disappears if you drink coffee regularly. However, it may be that it can cause increased blood pressure in some people so bear that in mind if you have elevated blood pressure. Studies do not support the myth that coffee raises the risk of heart disease, on the contrary in fact, there is some evidence that women who drink coffee have a reduced risk of heart disease and some studies have shown that coffee drinkers actually have a 20% lower risk of stroke. 37-40


So, based on the above advantages and studies, given that coffee drinkers are less likely to get many diseases, it makes sense that coffee could help you live longer. There are actually several observational studies showing that coffee drinkers have a lower risk of death, two of which associated coffee drinkers with a 20% lower risk of death in men and a 26% lower risk of death in women, over a period of 18-24 years. 41

How much can you safely drink?

It has to be noted here that each person reacts differently to and can tolerate different amounts of coffee, but as a guideline; the caffeine content in a cup of coffee is highly variable, ranging from 50 to 400+ mg per cup. A small home-brewed cup of coffee could contain 50 mg, while a big 16 oz Starbucks grande can contain over 300 mg. As a general rule, you can assume that an average 8 ounce cup of coffee contains around 100 mg of caffeine.

Several sources suggest that 400 mg of caffeine, or 4 cups of coffee, are safe for most healthy adults 42,43 however, many people drink much more than that without any issues.
It should also be noted that most of the benefits are related to the caffeine in coffee, so this would obviously not be applicable in the case of decaffeinated coffee.

References (follow link)

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The Daily Drink That Could Fight Off Erectile Dysfunction

Guys who guzzled this beverage reported having stronger penises. Fill up a cup and you might enjoy the benefits, too


By: Jada Green

( Your daily cup of Joe keeps you up in more ways than one: Caffeine could reduce your likelihood of having erectile dysfunction (ED), suggests a new study from the University of Texas Health Science Center at Houston.

Researchers found that guys over the age of 20 who consumed the caffeine equivalent of 2 to 3 cups of coffee a day were less likely to report ED issues than men who steered clear of the stimulant.

The connection was strongest in overweight guys, says study author David Lopez, Dr.P.H., M.P.H., but he plans to dive further into how the caffeine/ED link can affect different weight groups.

Related: 8 Simple Strategies for Stronger Erections

Caffeine has properties similar to ED drugs like Viagra, says study coauthor Run Wang, M.D. The stimulant triggers a series of effects that cause the arteries in your penis to relax and your blood flow to increase—both keys to a strong erection.

Feeling limp lately? Blame your bulging belly, says Men’s Health urology advisor Larry Lipshultz, M.D. Too much excess baggage can harm your vascular function, which messes with your blood flow.

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