Sugar is behind global explosion in type 2 diabetes, study finds

Researchers say link between consumption of sugar and diabetes is independent from obesity

Should we believe being overweight is good for our health?

Suzi Gage: A recent study has shown that having a BMI classed as overweight is associated with a lower risk of mortality than one classed as ideal. But what does this mean?

Diet and weight loss: our readers respond

The people's panel: As doctors call for urgent action on Britain's obesity crisis, six readers tell us of their experiences of diet and weight issues

A history of diets – from Byron to 5:2

Emine Saner: From the poet's faddish potato diet to the Atkins, Dukan and current favourite the 5:2 fast, the search for effective weight-loss programmes has been going on for centuries

How psychology can beat obesity

Long-term success of gastric operations linked to change of lifestyle and behaviour

How many calories do you need? – quiz

Counting calories can be confusing. So, how much do you know about them – and can you guess which foods contain the most?

Obesity epidemic: as a lifelong comfort eater, I understand the emotional pull of food

Rae Earl: In times of stress and unhappiness, food is this country's biggest pick-me-up

There’s no need for this obesity epidemic hysteria

Charlotte Cooper: Forty years of fat activism has shown that people with high body weights can stay healthy without dieting

Will changing my diet help me to sleep better?

New studies have claimed links between the way we eat and the way we rest at night