Posted - July 23, 2012

Reconsidering Cholesterol

Why some cholesterol is good after surgery for weight loss

Why some cholesterol is good after surgery for weight lossWhy some kinds of the fatty substance are good for you and may play less of a role in heart disease than once thought

After surgery for weight loss, it’s understandable to view fat as the enemy. Excess body weight is often lumped into the broad term ‘fat,’ meaning that many people equate ‘losing weight’ to ‘losing fat’.

Similarly demonized by this generalization is cholesterol, a waxy and fat-like substance that is frequently cited for its role in heart disease. Though we’re often told about the risk of high cholesterol, which may contribute to fatty buildup in the arteries that can cause cardiovascular problems, you may be surprised to learn that not all cholesterol is bad.

In fact, cholesterol is naturally produced by your liver and serves many important functions. Found in every cell of the body, cholesterol helps you produce hormones, vitamin D and the substances needed to digest foods. Learning how best to balance the levels of good and bad cholesterol in your body may be a big part of becoming healthier after weight loss surgery, while research shows that the fatty substance may not be as closely related to heart disease risk as once thought.

HDL vs. LDL: Cholesterols at Odds

Two different kinds of cholesterols can be found in both your body and the food you eat: low-density lipoproteins (LDL) and high-density lipoproteins (HDL). LDL is often referred to as “bad” cholesterol because of its association with dangerous arterial fat buildup, but is balanced by the body by HDL “good” cholesterol.

These two substances are in a constant balancing act within your body, but most people do not get enough HDL. Though both are produced by the body, American diets are often high in the trans and saturated fats that contain LDL but frequently low in the omega-3 fatty acids and polyunsaturated fats that provide HDL. As a result, most people can benefit from eating more fish, nuts, olive oil and other HDL sources that help to balance the body’s cholesterol levels.

Cholesterol and Heart Disease

Balanced cholesterol levels are an undeniably important aspect of any diet, but some research has indicated that its role in the development of heart disease may be exaggerated. Those at a high risk of heart disease often focus on lowering cholesterol as a treatment, but may in fact be ignoring other important factors like stress, sugar consumption, inflammation and oxidative damage.

In fact, cholesterol levels appear to be a poor predictor of heart attacks, with half of them occurring in people with normal cholesterol levels. Though decades of study have indicated that high cholesterol can contribute to heart disease, we’re beginning to see that the impact may be lower than was once assumed.

The Nurses Health Study

One of the most extensive studies of diet and disease ever done, this study began in 1976 and incorporates information from 238,000 nurse participants. An in-depth analysis of 84,129 of them identified five factors that were most important for reducing the risk of heart disease:

  1. Don’t smoke
  2. Moderate or discontinue alcohol consumption
  3. Maintain a healthy weight, with a BMI under 25
  4. Exercise for at least 30 minutes each day at moderate to vigorous levels
  5. Eat a wholesome diet low in sugar and high in omega-3 fatty acids and fiber

The authors of this study, the results of which were published in the New England Journal of Medicine, say that 82 percent of the coronary events that occurred during the study could have been prevented by adhering to these five basic tenets. Note that the only one related to cholesterol levels is the final one, which tells us to focus on an overall balanced diet including our levels of HDL and LDL.

To prevent heart disease as you build a healthier life after weight loss surgery, be sure not to focus too much on lowering your overall levels of cholesterol. You should be working to reduce your consumption of LDL sources in general, while HDL sources are often also some of the healthiest proteins. Yes, balancing your cholesterol is important, but many people may focus too much on this one aspect of preventing heart disease. Instead, lower your risk of heart disease by making your whole diet and lifestyle healthier.

ATTENTION patients of Dr. Al-Kalla

Dr. Al-Kalla will be leaving Weight Loss Specialists of North Texas at the end of July. If you would like continue as his patient, please let us know and we can assist in getting your medical records transferred.

You may also choose to stay with Weight Loss Specialists of North Texas and we’ll gladly transfer your care to another provider on staff.

Thank you.