A FEW sips of vinegar might be enough to combat symptoms of depression, a new small study has suggested. Overweight people who endured a sour start to the day saw a 42 per cent reduction in symptoms in just four weeks, Arizona State University researchers found. Previous studies have found vinegar could boost weight loss by speeding up the metabolism - a process associated with increased serotonin (happy hormone) production in the brain.

The US researchers said their findings could pave the way for a drug-free alternative to antidepressants , which are known to come with side effects . Study author, Dr Carol S Johnston, said: "Depressive disorders are the most prevalent mental health conditions in the world." "The commonly prescribed antidepressant medications can have serious side effects, and their efficacy varies widely.

Read more on depression "Thus, simple, effective adjunct therapies are needed." Around one in six Brits suffers depression , with women about twice as likely to have the mental health problem. It is the most common mental health issue in older people, with around 22 per cent of men and 28 per cent of women aged 65 or over affected.

Seperate studies have linked taking vinegar to lower blood sugar levels , blood pressure, and cholesterol . Most read in Health The latest research, published Nutrients looked at how the condiment affects depression in overweight but otherwise healthy people. Researchers gave two tablespoons of diluted red wine vinegar twice a d.