There may be a risk of developing certain conditions because of your family's medical history. However, you can improve your chances and stack the odds in your favor if you use common sense. A diet full of fat and sugar could lead to diabetes. Medical research also indicates that poor diet choices increase a person's risk of developing certain cancers.

Lean Muscles

The quality of your diet will also affect your muscles. Lean meats will provide you with good levels of protein without the damaging fats and help keep your muscles lean.

A thin person who eats a bad diet runs the risk of developing poor complexion, dry or oily skin, dry or greasy hair, spots, constipation or loose stools, bad breath, weak muscles and bones, high cholesterol, blocked arteries, diabetes and heart problems.