The potential health benefits trusted Source associated with drinking coffee include:
protection against type 2 diabetes, Parkinson's disease, liver disease, and liver cancer
the promotion of a healthy heart
In the sections below, we cover these benefits in more detail.
1. Coffee and diabetes
In 2014, researchers who gathered data on over 48,000 people found that those who increased their coffee consumption by at least one cup per day over 4 years had an 11% lower risk of type 2 diabetes than those who did not increase their intake.
A meta-analysisTrusted Source from 2017 concluded that people who drank four to six cups of either caffeinated or decaffeinated coffee each day appeared to have a lower risk of metabolic syndrome, including type 2 diabetes.
Various studies have shown that caffeine, which is present in coffee and many other beverages, may help protect against Parkinson's disease.
One team concluded that men who drink over four cups of coffee per day might have a fivefold lower risk of Parkinson's than those who do not.
In addition, the caffeine in coffee may help control movement in people with Parkinson's, according to one 2012 study.
The findings of a 2017 meta-analysis suggested a link between coffee consumption and a lower risk of Parkinson's disease, even among people who smoke. This team also found that people who drink coffee may be less likely to experience depression and cognitive conditions such as Alzheimer's.
There was not enough evidence trusted source to prove that drinking decaffeinated coffee would help prevent Parkinson's disease, however.
Italian researchers found that coffee consumption lowers the risk of liver cancer by around 40%. Some of the results suggest that people who drink three cups per day might have a 50% lower risk.
Also, a 2019 literature review trusted the source
concluded that "coffee intake probably reduces the risk of liver cancer."
4. Coffee and other liver diseases
A meta-analysisTrusted Source from 2017 concluded that consuming any type of coffee appeared to reduce the risk of liver cancer, nonalcoholic fatty liver disease, and cirrhosis.
People who consume coffee may also have a lower risk of gallstone disease.
In 2014, researchers looked at coffee consumption among people with primary sclerosing cholangitis (PSC) and primary biliary cirrhosis (PBC). These are autoimmune conditions that affect the bile ducts in the liver.
They found that people with PSC were more likelyTrusted Source to have a lower coffee intake than those without the condition. There was no evidence to suggest that coffee intake was different among people with or without PBC.
Also, one 2014 study suggested a link between coffee consumption and a lower risk of dying from nonviral hepatitis-related cirrhosis. The researchers suggested that drinking two or more cups of coffee every day might reduce the risk by 66%.
5. Coffee and heart health
One 2012 study concluded that drinking coffee in moderation, or consuming around two 8-ounce servings per day, may protect against heart failure.
People who drank moderate amounts of coffee each day had an 11% lower risk of heart failure than those who did not.
One 2017 meta-analysisTrusted Source found that caffeine consumption may have at least a small benefit for cardiovascular health, including blood pressure.
Some studies, however, found higher levels of blood lipids (fat) and cholesterol in people who consumed more coffee.
source:medicalnewstoday.com
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