Lifestyles and behaviours Home Our place Lifestyles and behaviours Smoking Smoking is the most important cause of preventable ill health and premature mortality in the UK. Find out more Physical activity Physical inactivity is responsible for one in six UK deaths (equal to smoking) and is estimated to cost the UK £7.4 billion annually (including £0.9 billion to the NHS alone). Find out more Alcohol Since the early 1980s, alcohol sales and the amount that people drink has steadily increased, until peaking in 2008 and declining slightly since. Find out more Healthy eating Eating a healthy, balanced diet is an important part of maintaining good health. Find out more Healthy weight Overweight and obesity are terms that refer to excess body fat which is calculated by body mass index (BMI) and waist circumference. Find out more