I live 50 miles from London and we've got some of the highest levels of teenage and childhood poverty in the country. It's disgusting. Just because it's a rural area, it gets forgotten.
All the pre-made sauces in a jar, and frozen and canned vegetables, processed meats, and cheeses which are loaded with artificial ingredients and sodium can get in the way of a healthy diet. My number one advice is to eat fresh, and seasonally.

