Chronic lack of sleep can do more than just leave you feeling drowsy the next day, it can lead to a constellation of serious health problems, including obesity, type 2 diabetes, mood disorders, cardiovascular disease and hypertension (high blood pressure).

If you experience a sudden loss of hearing, it's important to see your doctor and get tested. Hearing loss can have many causes, including neurological problems, circulatory-system malfunctions, or trauma to the ear.

Cholesterol is a soft, waxy substance that circulates in your bloodstream and in all the cells in your body. It produces essential cell membranes and certain hormones. Your body makes some cholesterol on its own and the rest comes from animal products such as meat, poultry, fish, eggs, butter, cheese, and whole milk.

Because the body doesn't produce omega-3 fatty acids, you must get them through eating certain types of oily seafood such as salmon, tuna, sardines, mackerel, herring, trout, or shellfish, which contain eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).