Love of coffee may be down to genes

Joe Elvin

2011-09-19 3:36 PM

Genetics may play a key role in the amount of coffee that individuals crave. 

A genetic study of 40,000 individuals has highlighted two stretches of DNA which may be linked to high caffeine intake. Those with either of these genes are likely to make more visits to the latte machine than average.

The Queensland Institute of Medical Research (QIMR) researchers claimed that that both genes are involved with the way that the body processes caffeine on a daily basis.

One of the genes, CYP1A2, deals with how the body breaks down caffeinated drinks whilst the second gene, AHR, helps to regulate this process.

Speaking to paktribune.com, the study’s lead author, Dr Neil Capraso, claimed his research provided a significant breakthrough within the studies of the effects of caffeinated drinks.

He said: “There are hundreds of genes known for specific medical conditions - for dietary consumption we know very little. Now, for the first time, we know specific genes that influence the amount of caffeine that individuals consume.”

According to The Times of India, the researchers also found that caffeine can also affect the expression of genes throughout time; as well as a link between these caffeine genes and other conditions such as hypertension or Parkinson’s disease.