Huge effect drinking two cups of coffee a day can have on your health
![Huge effect drinking two cups of coffee a day can have on your health](https://i2-prod.mirror.co.uk/incoming/article31816647.ece/ALTERNATES/s615/0_Close-up-of-steaming-cup-of-coffee-or-tea-on-vintage-table-early-morning-breakfast-on-rustic-backg.jpg)
The world's favourite brew is a tonic for the heart - boosting longevity, according to the biggest analysis of its kind. Scientists traced the health and coffee habits of over 400,000 Britons