Cholesterol may be one of the most misunderstood molecules, says one Harvard Medical School instructor. Why? Because cholesterol is not always a health risk. It's vital to many of the body's essential functions, in fact. Still, the more cholesterol in the blood, the greater the chance some may become oxidized (damaged). This can lead to the build up of plaque, which can narrow the arteries and increase the risk for heart disease. Take a look at these four steps for keeping your cholesterol in check.

• Eat more fiber. Soluble fiber is best. Think oats and barley.
• Lose weight. Dropping extra pounds is the best method for lowering cholesterol. Cut out high-glycemic foods, like white bread and white rice, to keep cholesterol down.
• Exercise. It's key for raising good cholesterol (HDL). And it's good for the heart overall.
• Consume cholesterol-lowering foods. Add fruits, vegetables, nuts, seeds, cereals, and legumes to your diet and you can significantly lower your risk of heart disease.
  

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Go to the grocery store hungry and you're bound to crave everything in sight. Blame your "Mmm" hormone, says new research that names the natural molecule ghrelin the responsible party.

Why ghrelin? Because it improves perception and memory when it comes to food. When hunger strikes, watch out, because ghrelin makes the brain find just about every food appealing, sending us on a path to diet destruction.

Researchers have long known that ghrelin, a hormone secreted in the gut, rises and falls before and after meals. Now they're learning that this "Mmm" hormone has even more power -- it causes hunger and encourages eating.

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So I imagine you've heard why antioxidants are such a big deal? The molecule, which is found in fruits and veggies, is thought to help prevent cancer -- and lower your risk of heart disease and slow down aging -- by stopping free radicals from damaging healthy cells. To find out a bit more about the process ,as well as some foods highest in antioxidants, take a look at Martha Edwards' Daily Fit Tip post on adding items that contain the molecule into your diet.

If you've already begun to eat these healthy fruits and vegetables but are looking for new ways to prepare them, try out one of the three salad recipes listed here. The Power Packed Pomegranate Salad contains spinach and seeds of the tropical fruit, both of which have loads of antioxidants, while the blueberries in Blueberry Chicken Salad and the black beans in the Black Bean and tomato salad pack a healthy antioxidant punch.

Have you got any antioxidant-loaded recipe favorites to share?

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