Poor diet has been linked to diseases such as diabetes and cancer, but do you have much of a choice if you are on a tight budget?

Organic food is rising in popularity in the West, but Vishala Sri-Pathma asks nutritionist Sophie Medlin whether the additional cost of buying organic is actually worth it. And what if you are time poor, as well as short of money? Chef Tom Kerridge has tips for how even if you have just 20 minutes spare, it's still possible to pull together a healthy family meal.

Plus Dr Susan Babey, a senior research scientist for health policy at University College Los Angeles, explains another major factor affecting the diets of many ordinary Americans - so-called "food deserts" where there is simply nowhere to actually buy fresh produce.

(Picture: Fresh locally grown vine tomatoes for sale outside a green grocer store in the the UK; Credit: John Keeble/Getty Images)