High cholesterol is one of the most common health problems around the world. As people get older, many are told by their doctors that their cholesterol levels are too high and need treatment. Cholesterol itself is not always harmful.
The body needs it to build cells and make certain hormones. However, when too much cholesterol builds up in the blood, it can stick to the walls of arteries. Over time, this can narrow the blood vessels and make it harder for blood to flow. This raises the risk of serious conditions such as heart attacks and strokes.
To lower these risks, millions of people take cholesterol-lowering medicines every day. The most common of these medicines are called statins. Well-known examples include Lipitor and Crestor. Statins work by reducing the amount of cholesterol produced by the liver.
They have been used for decades and are considered one of the most successful medicines for preventing heart disease. Many studies have shown that statins can save lives and help people stay healthier for longer.
In recent years, another group of cholesterol-lowering drugs has become available. These medicines are known as PCSK9 inhibitors. They work differently from statins. Instead of reducing cholesterol production, they help the body remove more cholesterol from the bloodstream.
Because of this, they can lower cholesterol levels very effectively, especially in people whose cholesterol remains high despite taking statins.
Although these medicines are mainly prescribed to protect the heart and blood vessels, scientists are becoming increasingly interested in whether they affect other parts of the body as well. A new study led by Kitty Pham, a Ph.D. student at the University of South Australia, has explored this question and uncovered some surprising findings.
The research was published in the journal British Journal of Clinical Pharmacology. The study examined how statins and PCSK9 inhibitors may influence different body systems beyond their well-known cholesterol-lowering effects.
To investigate this, the researchers used genetic information. Genes act like instructions that help determine how the body grows, functions, and responds to different conditions. By studying genetic data from large groups of people, scientists can estimate the possible long-term effects of medicines without having to wait decades for traditional clinical studies.
The researchers found evidence suggesting that statins may be linked to changes in body weight and body fat. Some people taking these medicines may be more likely to gain weight over time. The study suggests that this effect could be related to changes in hormone levels.
One hormone that drew particular attention was testosterone. Testosterone is often associated with men, but it is important for both men and women. It plays a role in maintaining muscle mass, energy levels, mood, and overall health.
The researchers found signs that statins might lower testosterone levels in some people. This possible change could help explain why some individuals notice differences in their weight, body composition, or energy after using these medicines.
At the same time, the study also identified a potentially positive effect. The researchers found evidence that statin use may be linked to a larger hippocampus, a small but important area of the brain. The hippocampus plays a major role in memory, learning, and emotional health.
Scientists have previously found that a smaller hippocampus is often linked to conditions such as depression and dementia. Therefore, a larger hippocampus could potentially offer some protection against these problems. However, the researchers stressed that more studies are needed before firm conclusions can be made.
The study also looked at the newer PCSK9 inhibitors. Interestingly, the results suggested that these medicines may affect lung function.
At this stage, the researchers do not know whether the effect is beneficial, harmful, or simply a small change without major health consequences. More research will be needed to understand exactly what is happening and whether it matters in everyday medical care.
These findings highlight an important point about modern medicine. Drugs are often developed for one main purpose, but they can sometimes influence other parts of the body in unexpected ways.
Understanding these wider effects can help doctors make better treatment decisions and give patients more complete information about the medicines they take.
The researchers emphasized that the benefits of cholesterol-lowering drugs remain clear. Statins and PCSK9 inhibitors are highly effective at reducing cholesterol levels and lowering the risk of serious cardiovascular disease. The new findings should not be seen as a reason for people to stop taking their prescribed medication.
Instead, the study encourages greater awareness. People taking cholesterol medicines should continue following their doctor’s advice while also paying attention to any changes they experience. If they notice weight gain, changes in energy levels, or breathing-related symptoms, they should discuss these issues with their healthcare provider.
In many cases, doctors can help manage side effects through lifestyle changes, medication adjustments, or further monitoring.
Research like this is helping scientists build a more complete understanding of how medicines affect the human body.
As genetic research continues to advance, it may become easier to predict which treatments will work best for different individuals. This could lead to more personalized healthcare, where treatments are tailored to each person’s unique biology.
The study also reminds us that science is always evolving. Even medicines that have been used successfully for many years can still reveal new information. By continuing to investigate both the benefits and possible side effects of common drugs, researchers can improve patient care and help people make better-informed decisions about their health.
If you care about heart health, please read studies about how eating eggs can help reduce heart disease risk, and Vitamin K2 could help reduce heart disease risk.
For more information about heart health, please see recent studies about how to remove plaques that cause heart attacks, and results showing a new way to prevent heart attacks, strokes.
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