Lewy body disease is a serious condition that affects the brain. It can change how people think, move, and remember. It is not as well known as Alzheimer’s disease, but it is actually the second most common cause of dementia.
This disease is also closely linked to Parkinson’s disease and Lewy body dementia, which are two major brain disorders.
The name “Lewy body disease” comes from tiny clumps found inside brain cells. These clumps are called Lewy bodies. They are made from a protein called alpha-synuclein that has folded in an abnormal way. When these clumps build up in the brain, they interfere with how brain cells work and communicate with each other.
This damage can lead to a wide range of symptoms. Some people may first notice problems with movement, such as shaking or stiffness, which are common in Parkinson’s disease.
Others may notice changes in memory, thinking, or attention, which are signs of Lewy body dementia. Even though these conditions look different at first, they are caused by the same underlying problem.
For many years, doctors faced a major challenge. The only way to confirm Lewy body disease was by examining brain tissue after a person had died. This meant that early diagnosis was very difficult, and treatment could not begin as soon as it should.
Now, scientists from Lund University in Sweden have made an important breakthrough. They have developed a new test that can detect signs of Lewy body disease before symptoms even appear. Their findings were published in the medical journal Nature Medicine.
The test looks at a clear liquid that surrounds the brain and spinal cord. This liquid is called cerebrospinal fluid. It can carry important information about what is happening inside the brain. By studying this fluid, scientists can find early signs of disease.
In this study, the researchers tested more than 1,100 people who did not have any obvious problems with memory or movement. Surprisingly, about 10 percent of these people already showed signs of Lewy bodies in their cerebrospinal fluid. This means the disease had already started, even though they felt completely normal.
The researchers then followed these individuals over time. They found that people who had these early signs were more likely to develop problems with thinking and memory later on. Some were eventually diagnosed with Parkinson’s disease or Lewy body dementia. This shows that the test can detect the disease many years before symptoms begin.
Another interesting finding was related to the sense of smell. Many people in the early stages of Lewy body disease had difficulty smelling things, even though they did not have other symptoms. This suggests that changes in smell may be one of the earliest warning signs of the disease.
Because of this, scientists believe that simple smell tests could be used as an early screening tool. For example, people over the age of 60 could take a smell test. If they show signs of smell loss, doctors could then use the cerebrospinal fluid test to check for Lewy body disease.
This discovery is important because early detection can make a big difference. Researchers around the world are working on new treatments that may slow down or stop the disease. However, these treatments are most effective when given early, before too much damage has happened in the brain.
The study also found that some people with Lewy body disease had other proteins linked to Alzheimer’s disease. These individuals tended to get worse more quickly. This information may help doctors better understand how the disease will progress in each patient.
Looking ahead, scientists hope to develop even simpler tests. There is already a blood test for Alzheimer’s disease, and researchers are working toward a similar test for Lewy body disease. Although it is more difficult to detect these proteins in blood, experts believe it may be possible in the future.
This research brings new hope. It shows that brain diseases do not have to remain hidden until it is too late. With better tests, doctors may soon be able to find these conditions early and treat them more effectively.
In simple terms, this breakthrough could help protect memory, independence, and quality of life for many people. As science continues to advance, early detection may become one of the most powerful tools in fighting brain disease.
If you care about dementia, please read studies about the power of healthy fats for brain health, and wild blueberries can benefit your heart and brain..
For more health information, please see recent studies about how eating nuts can affect your cognitive ability ,and brain foods nourish your mind to outsmart dementia.
Copyright © 2026 Knowridge Science Report. All rights reserved.
