Brain health and Cholesterol (Credit-Canva)

Updated Jan 16, 2025 | 01:30 PM IST

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Good Cholesterol May Be Key To Avoiding Alzheimer's, According To New Research!

Summary There are a lot of different elements that people believe are not good and should be avoided completely like cholesterol and fats. But what people do not understand is that these are also necessary for your body, and a new study suggests that it is a lot more useful than you may think it is.

With people becoming more health conscious these days, they have made it a point to look at things more closely to make sure that whatever they are consuming is good. While this habit is a good thing, unless you understand the components and what role they play for your health, you may end up avoiding perfectly good food because you thought that the ingredients in it were unhealthy. Cholesterol has a reputation just like that, people will often avoid foods that have cholesterol because they believe it is bad. We often associate cholesterol with heart problems, but new research suggests "good" cholesterol, called HDL, might also be important for brain health as we get older. With diseases like Alzheimer's becoming more common, scientists are looking for ways to protect our brains. This study points to HDL as a possible key. It suggests that keeping our HDL levels healthy could have benefits beyond just our heart health, potentially helping to keep our minds sharp as we age. This is exciting news and a promising area of research.

What is HDL? The "Good" Cholesterol

HDL is one of two main types of cholesterol. The other is LDL, the "bad" cholesterol that can clog arteries. HDL acts like a cleanup crew, traveling through the bloodstream and removing cholesterol from our arteries and other tissues. It then carries this cholesterol to the liver, where it's eliminated from the body. Scientists are also studying how well HDL does its job, which they call "efflux capacity." Regular cholesterol tests measure how much HDL you have, but not necessarily how well it works. Researchers are exploring factors that affect HDL's functionality.

Researchers studied over 1,800 adults for seven years, tracking their HDL levels, how well their HDL functioned. They also checked their thinking skills and used brain scans to measure their gray matter, which is important for memory and thinking. The study found that people with better HDL function and smaller HDL particles had more gray matter and better thinking skills later in life. This suggests that smaller HDL particles might help protect the brain by supporting its structure and function.

How Can You Support Your Brain Health?

While the study is promising, it has some limitations. It's hard to be absolutely sure that HDL alone is responsible for the brain benefits, as other factors could be involved. Also, the brain scans were only done twice over seven years, which might not capture all the changes happening in the brain. Finally, while gray matter is important, it's not the only thing that affects thinking skills. More research is needed to fully understand the connection between HDL and brain health.

Even though we need more research on HDL and the brain, we know that heart health and brain health are closely linked. Keeping your heart healthy is good for your brain too. Things you can do include regular exercise, a balanced diet like the Mediterranean diet, and managing cholesterol levels as recommended by your doctor. If you have high cholesterol, your doctor might recommend medication. Following these guidelines is important for both your heart and brain health.

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