A couple of drinks on an evening out or with dinner won't hurt your digestive system, but drinking too much certainly will. It increases acid production in your stomach and can cause heart burn, while aggravating other symptoms of digestive discomfort.

Binge drinking is defined as drinking more than 6 units in one session for women, or more than 8 units for men. You can find a handy tool to calculate the amount of units you drink per day at www.drinkaware.co.uk/tips-and-tools/drink-diary/.

The amount of units in any drink varies depending on the size of the drink and the strength of the alcohol (ABV). As a rough guide: a 175ml glass of wine can add up to 2.3 units, a pint of lager could be 2.8 units, and a 25ml measure of light spirits might be 0.9 units.