Many people use laxatives to deal with constipation. These medicines are easy to buy and are often seen as safe.
However, a new study from the Chinese Academy of Sciences suggests that using laxatives often over a long time may be linked to a higher risk of dementia. This finding has raised concerns about something many people use without much thought.
Constipation is very common, especially in older adults. It can happen because of diet, lack of exercise, stress, or certain health conditions. To get relief, people often turn to laxatives. These drugs help the body pass stool more easily.
Some work by adding bulk, while others pull water into the intestines or stimulate the muscles of the gut. Because they are widely available without a prescription, many people use them regularly.
The new study used data from the UK Biobank, which is a large health research database in the United Kingdom. It includes detailed information from more than 500,000 people.
At the start of the study, none of the participants had dementia. About 3.6 percent of them reported that they had used over-the-counter laxatives often in the month before the study began.
The researchers followed these people for more than 10 years. During this time, they tracked who developed dementia. Dementia is a condition that affects memory, thinking, and daily life. It is more common as people age and includes diseases like Alzheimer’s disease.
The results showed a clear difference between people who used laxatives often and those who did not. About 1.3 percent of regular laxative users developed dementia during the study period.
In comparison, only 0.4 percent of people who did not use laxatives often developed dementia. After taking into account factors such as age, gender, and health history, the researchers found that regular laxative users had about a 51 percent higher risk of developing dementia.
The risk was even higher for people who used a specific type called osmotic laxatives. These laxatives work by drawing water into the intestines, which softens stool and makes it easier to pass. While they are effective, the study suggests they may be more strongly linked to dementia risk than other types.
It is very important to understand that this study does not prove that laxatives cause dementia. It only shows a strong link between the two. There may be other reasons that explain this connection. For example, people who need laxatives often may already have health problems that also increase their risk of dementia.
The researchers think the answer may involve something called the gut-brain connection. The gut and the brain are closely linked through nerves, hormones, and the immune system. This link is sometimes called the gut-brain axis. The gut also contains trillions of bacteria that help with digestion and overall health.
Frequent use of laxatives may change the balance of these bacteria in the gut. This could affect how signals are sent to the brain. It may also lead to the production of harmful substances in the intestines. Over time, these changes could have an impact on brain health.
The study was published in the journal Neurology. It adds to growing research that shows how important gut health is for the brain. Scientists are still learning how these systems work together and how medicines may affect them.
There is still no sure way to prevent dementia, but there are steps people can take to lower their risk. Experts suggest staying active both physically and mentally. Regular exercise, healthy eating, good sleep, and staying socially connected can all help. Managing long-term health conditions and reducing stress are also important.
This study is a reminder that even common medicines should be used with care. If someone needs to use laxatives often, it may be a good idea to talk to a doctor. There may be other ways to manage constipation, such as changes in diet, drinking more water, or increasing physical activity.
More research is needed to fully understand the link between laxatives and dementia. Scientists will continue to study how the gut and brain interact and what this means for long-term health. For now, this study encourages people to think carefully about long-term use of any medication, even those that seem harmless.
If you care about dementia, please read studies about dietary strategies to ward off dementia, and how omega-3 fatty acids fuel your mind.
For more health information, please see recent studies about Choline deficiency linked to Alzheimer’s disease, and what to eat (and avoid) for dementia prevention.
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