A growing body of research is starting to convince many doctors to think again how they look at fats and heart disease, according to Healthy Ways Newsletter.
A study published in the Annals of Internal Medicine this week showed that despite decades of old nutritional advice Cambridge University researchers have found that giving up fatty meat, cream or butter is not likely to improve health. Also, so-called ‘healthy’ polyunsaturated fats do not prevent cardiovascular problems.
The new study indicates that there is more than one kind of LDL molecule. The larger LDL molecules are benign while the smaller ones cause the problems.
They want the guidelines to be changed to reflect the growing evidence that there is no overall association between saturated fat consumption and heart disease.
The new research came from a meta analysis of data from 72 studies including more than 600,000 individuals from 18 countries.
Dr. Rajiv Chowdhury is the lead author of the new study and a cardiovascular epidemiologist in the department of public health and primary care at Cambridge University.
“The primary reason saturated fat has historically had a bad reputation is that it increases low-density lipoprotein cholesterol, or LDL, the kind that has been assumed to raise the risk for heart attacks. But the relationship between saturated fat and LDL is complex, said Dr. Chowdhury. In addition to raising LDL cholesterol, saturated fat also increases high-density lipoprotein, or HDL, the so-called good cholesterol that has shown to protect against heart disease. And the LDL that it raises is a subtype of big, fluffy particles that are generally benign,” Healthy Ways reported.
“The smallest and densest form of LDL is more dangerous. These particles are easily oxidized and are more likely to set off inflammation and contribute to the buildup of artery-narrowing plaque. An LDL profile that consists mostly of these particles usually coincides with high triglycerides and low levels of HDL, both risk factors for heart attacks and stroke.
“The smaller, more artery-clogging particles are increased not by saturated fat, but by sugar, sugary foods, and an excess of carbohydrates, Dr. Chowdhury said. “It’s the high carbohydrate or sugary diet that should be the focus of dietary guidelines,” he said. “If anything is driving your low-density lipoproteins in a more adverse way, it’s carbohydrates.”
The fat story is a complex one. I think it is important to focus on Dr. Chowdhury’s observation that the LDL that is raised is a subtype of big fluffy particles that are generally benign. In my experience, I have only read that LDL is the ‘bad’ cholesterol and we need to reduce it. Apparently that is not the case. It is sugar that increases the small and harmful LDL.
As I have written here more than once, I eat coconut oil , a saturated fat, every day in a number of ways and my cholesterol numbers have only gotten better.
To read more about the benefits of coconut oil check out my Page: Why You Should Include Coconut Oil in Your Diet.
Tony
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