The science of why your cholesterol matters
article In the last few decades, the amount of cholesterol in the blood has increased significantly, especially in Western countries.
But a new study published in the Journal of the American College of Cardiology found that this increase in cholesterol is not due to the increasing amount of saturated fat in the diet.
Rather, researchers say, the increase in total cholesterol is actually due to other factors, including an increase in body weight and a rise in insulin levels.
The researchers used data from the National Health and Nutrition Examination Survey to estimate the rate of change in total and LDL cholesterol since 1950, the year the first measurement of total cholesterol was made.
They found that since 1950 the rate has been rising, from 1.4 percent to 3.3 percent per year.
The most recent survey in 2012 found that the increase was at least as large.
What’s going on?
The researchers also looked at changes in the body weight of people over time, and found that a higher body weight has a significant effect on the amount and type of cholesterol that gets stored in the cells of the body.
That suggests that a lower body weight is also correlated with a higher percentage of circulating LDL cholesterol.
And since most of the lipids that make up the LDL are stored in adipose tissue, it makes sense that those that make it to the cells would also be stored there, they said.
In other words, a lower BMI would be associated with a lower level of HDL cholesterol.
The increase in LDL cholesterol is a major factor in heart disease.
And it also has a direct effect on our overall health, they wrote.
In fact, the researchers found that those who had a BMI between 20 and 24 had an average of 6 percent higher LDL cholesterol than those who were between 25 and 29.
If you are a middle-aged or older adult, the percentage of total and total-LDL cholesterol you have in your cells has a positive impact on your risk of heart disease, they added.
They also found that people who had the lowest BMI, on average, had the highest levels of LDL cholesterol, and that this effect held for both men and women.
This is what they call the ‘reverse cholesterol hypothesis.’
It suggests that people with the lowest body weight have lower levels of cholesterol, but that they also have a higher rate of heart attack and stroke than people who have the highest body weight.
This could be the reason for the increased number of heart attacks and strokes that people are reporting, the authors concluded.
This isn’t the first time the reverse cholesterol hypothesis has been tested.
In 2007, researchers at the University of Utah found that lowering LDL cholesterol in men was associated with less heart attack risk.
And in 2011, researchers in Japan reported that lowering HDL cholesterol could reduce the risk of stroke.
But those studies were all observational studies.
This study is the first to look at the effect of a person’s BMI on their cholesterol.
Because the new study uses more precise measurements of LDL and HDL cholesterol, it’s able to look more deeply into the causes of the cholesterol differences between people, the investigators wrote.
This makes it possible to look for potential mechanisms.
For example, the team suggests that the HDL and LDL concentrations may be more sensitive to different dietary fats.
They said that this could help us understand how cholesterol levels differ in different populations.
But if we don’t understand what causes these differences, we will have a difficult time changing them, the study concluded.
Is this a trend that we should worry about?
Well, the fact that it’s a reverse cholesterol theory does not mean it’s good news, said Dr. Peter C. Piot, director of the Division of Cardiovascular Diseases at Boston Children’s Hospital.
Pritchard said it’s too soon to say that lowering cholesterol levels in people will have any benefit.
“This study is really important to understand the mechanisms involved in this,” he said.
Pushing cholesterol levels down can lead to some adverse side effects, he said, but in the long term, this may be beneficial.
“If you reduce cholesterol, you’re going to have better blood pressure, and it’s going to help lower the risk for heart disease and stroke,” Pritkind said.
He noted that while the reverse-cholesterol theory may have some benefits in the short term, it may not have any long-term effects.
And he said there are other things that could contribute to the increased risk of the heart disease that we’re seeing right now, including obesity, high blood pressure and a high BMI.
“We know that the amount [of cholesterol] that people have is going to be higher in the years ahead,” he added.
“So you may want to look out in the future to see if that’s an issue that you should look at and if so, how to manage it.”
Related: What you need to know about the cholesterol-lowering drugs currently in the pipeline: