How many cups of coffee do you drink? Here is interesting caffeine metabolism.

Several genome studies say about DNA also shows your caffeine intake habits. Especially, the studies by the University of Edinburgh, found genetic variation called PDSS2. It lowers caffeine dissolving rate and lets caffeine stay longer at body. Studies have been done prior with Italian and further to Netherlands. The results shows people with PDSS2 are more likely to have lower caffeine intake than without PDSS2.

Dr Nicola Pirastu, a Chancellor’s Fellow at the University of Edinburgh’s Usher Institute, added “The results of our study add to existing research suggesting that our drive to drink coffee may be embedded in our genes. We need to do larger studies to confirm the discovery and also to clarify the biological link between PDSS2 and coffee consumption.” It means people with PDSS2, wouldn’t need to drink larger amount of coffee to get more caffeine hits than others.

If you are a person with PDSS2 and addict, please don’t overdo your caffeine by daily habit. Sometimes too much caffeine harms you.