Why coffee is addictive

If you struggle to get through the day without a constant supply of coffee or tea, it may be down to more than just personal taste.

If you're one of those people who feels uncomfortable every day without coffee and tea, it's not just a personal preference.

Research shows some of us inherit genes which make us more reliant on caffeine.

Scientists have discovered that certain genes in the body cause us to be more dependent on caffeine.

Those with the ‘caffeine addict’ genes need to drink more coffee or tea to get the same buzz.

Those who carry the caffeine addiction gene need more coffee or tea to perk themselves up.

This could also help to explain why chocolate is more irresistible to some than others.

A little explaining why some people find chocolate so hard to resist.

The intriguing finding comes from a U.S. study scrutinising the DNA and diets of 45,000 people, one of the first to examine links between foods and genes.

Researchers in the United States studied the genes of 45000 people and came up with the intriguing results, which are the first experiments to explore the link between food and genes.