More than half of Americans drink coffee every day and many wonder if this is actually good for their health. The scientists at Stanford University undertook a research and brought good news for coffee addicts and enthusiasts.
The research found that coffee has good effects on our health and we can benefit from drinking it on a daily basis. They found that caffeine fights against age-related chronic inflammation and can increase longevity. The senior author of the study, Mark Davis, also a professor of microbiology and immunology at Stanford, declared that the results of the study came as a surprise for him and the entire team of researchers.
A certain inflammatory process takes place in some older adults’ organisms, causing high blood pressure and stiffness of arteries. Studies proved that caffeine blocks this inflammatory mechanism, therefore being highly protective against advanced aging in these adults. Also, many others studies claimed a link was present between coffee consumption and longevity. Stanford researchers may have found the explanation.
The study focused on one group of healthy subjects aged from 20 to 30 and a second group of older people, aged over 60. They performed annual surveys, blood draws, and reviews of the medical history of the subjects. They also compared the blood samples from the young versus those from the old participants to see which genes are more active in old people. They observed a decreased activity of two clusters of genes responsible with the production of an inflammatory protein.
Afterwards, they separated the older adults in one category with activation of the genes and the other category with low activation of the genes. Nine out of 12 adults from the high category had high blood pressure, as compared to only one out of 11 from the low category. The high group also had higher levels of the genes and of nucleic-acid metabolites, responsible with triggering of inflammatory responses.
Also, the low group reported to consume more caffeinated beverages. Other previous studies had found that coffee consumption also lowers the risk of diabetes and of heart disease. Also, habitual coffee drinkers (that means more than 1.5 cups per day) have half the same risk of developing diabetes as non-coffee drinkers. The results stay the same even after considering smoking habits, blood pressure, or history of diabetes in the family.
All these results come as great news for diehard coffee fans. After being constantly warned about the bad effects coffee may have on their health, they can finally tell other how beneficial coffee consumption is.