Managing Cholesterol Naturally

Your heart is a pretty spectacular organ — a four-chambered, hollow muscle right smack in the middle of your chest. The heart’s job is to pump the blood that carries life-giving oxygen and other nutrients to every body tissue. To show how this works, the clever For Dummies artists have drawn a cross section of your heart in Figure 1-1 tracing the path of blood flowing in and out and in and out and in . . . you get the idea.

Every second of every minute of every hour of every day, blood flows out from your heart to carry oxygen and other nutrients to every tissue and organ in your body, and then comes back to your heart to pick up more oxygen and nutrients. In other words, blood circulates, which is why your heart and the vessels through which blood travels are called the circulatory system.

The best way to explain this process is to begin at the beginning, the point at which blood flows back from your body, into your heart:

1. The blood enters your heart from the superior vena cava, a large vein that opens into the right atrium, the first chamber of your heart.

Yes, the vena cava and the right atrium are on the left side of the picture above. In this picture, you’re looking at the front of the heart as it sits in the chest of the person to whom it belongs. If he were to turn around so that you were looking at him from the back, the vena cava and the right atrium would be in the correct position, on the right side of his body.

In real life, as opposed to a drawing, the right atrium and the left atrium receive blood simultaneously from the vena cava and the pulmonary vein respectively. The right and the left atria (plural for atrium) contract simultaneously to send blood down through the tricuspid valve and the mitral valve respectively. And the right and left ventricles contract simultaneously to push blood up into the pulmonary artery and the aorta respectively. All this without missing a beat. Hey, I told you this was a spectacular organ!

Heart disease is America’s number one health killer; it’s ahead of every type of cancer combined and every infectious and degenerative disease. Heart attack is the most common form of heart disease, and one significant risk factor for heart attack is high cholesterol or, more specifically, a high level of certain kinds of low-density lipoproteins (LDLs) — the “bad” fat and protein particles that ferry cholesterol into your arteries.

If you already know all this introductory stuff, feel free to skip Chapter 1 and head right into Chapter 2 where I describe cholesterol’s dual nature (yes, cholesterol has two sides).

But, then again, this chapter does lay out a statistical picture of heart disease and heart attack and explain the role cholesterol plays in placing you at risk. In fact, come to think of it, this chapter is a darn good intro to Controlling Cholesterol For Dummies, 2nd Edition.

To do the best job of controlling your cholesterol, you need to have a handle on the basics — info such as what cholesterol is, where it comes from, what it does, and why some varieties are more threatening than others. And being a Serious Seeker of Knowledge, you probably want to be able to perform a realistic evaluation of your own risk of developing cholesterol-related problems. The info you need is right here in this part. Go for it.