Know your coffee

 

Coffee is a potent source of healthful antioxidants.

In fact, coffee shows more antioxidant activity than green tea and cocoa, two antioxidant superstars. Scientists have identified approximately 1,000 antioxidants in unprocessed coffee beans, and hundreds more develop during the roasting process. Numerous studies have cited coffee as a major – and in some cases, the primary–dietary source of antioxidants for its subjects.

How it works: Antioxidants fight inflammation, an underlying cause of many chronic conditions, including arthritis, atherosclerosis and many types of cancer. They also neutralize free radicals, which occur naturally as a part of everyday metabolic functions, but which can cause oxidative stress that leads to chronic disease. In other words, antioxidants help keep us healthy at the micro-level by protecting our cells from damage. Finally, chlorogenic acid, an important antioxidant found almost exclusively in coffee, is also thought to help prevent cardiovascular disease.

Caffeine provides a short-term memory boost.

When a group of volunteers received a dose of 100 milligrams (mg) of caffeine, about as much contained in a single cup of coffee, Austrian researchers found a surge in the volunteers’ brain activity, measured by functional magnetic resonance imagery (FMRI), as they performed a memory task. The researchers noted that the memory skills and reaction times of the caffeinated volunteers were also improved when compared to the control group who received a placebo and showed no increase in brain activity.

How it works:  Caffeine appears to affect the particular areas of the brain responsible for memory and concentration, providing a boost to short-term memory, although it’s not clear how long the effect lasts or how it may vary from person to person.

Coffee is healthy for your heart.

A landmark Dutch study, which analyzed data from more than 37,000 people over a period of 13 years, found that moderate coffee drinkers (who consumed between two to four cups daily) had a 20 percent lower risk of heart disease as compared to heavy or light coffee drinkers, and nondrinkers.
 

How it works: There is some evidence that coffee may support heart health by protecting against arterial damage caused by inflammation.

Your liver loves coffee.

It’s true: In addition to lowering the risk of liver cancer, coffee consumption has been linked to a lower incidence of cirrhosis, especially alcoholic cirrhosis. A study in the Archives of Internal Medicine demonstrated an inverse correlation between increased coffee consumption and a decreased risk of cirrhosis–a 20 percent reduction for each cup consumed (up to four cups).
 

How it works: Scientists found an inverse relationship between coffee drinking and blood levels of liver enzymes. Elevated levels of liver enzymes typically reflect inflammation and damage to the liver. The more coffee subjects drank, the lower their levels of enzymes.

Coffee may help curb certain cancers.

Men who drink coffee may be at a lower risk of developing aggressive prostate cancer. In addition, new research from the Harvard School of Public Health suggests that drinking four or more cups of coffee daily decreased the risk of endometrial cancer in women by 25 percent as compared to women who drank less than one cup a day. Researchers have also found ties between regular coffee drinking and lower rates of liver, colon, breast, and rectal cancers.


How it works: Polyphenols, antioxidant phytochemicals found in coffee, have demonstrated anticarcinogenic properties in several studies and are thought to help reduce the inflammation that could be responsible for some tumors.

Hear it from the experts.