What Long-Term Benzo Use Might Do to Your Brain

Benzos are medicines like Xanax, Ativan, or Valium. Doctors often prescribe them to help with anxiety (feeling very worried) or trouble sleeping. If someone takes benzos for months or years, you might wonder if they can hurt the brain. The science isn’t simple, but here’s what we know in a way that’s easy to understand.

Do Benzos Cause Alzheimer’s or Dementia?

Alzheimer’s and dementia are diseases that make it hard to remember things or think clearly as people get older.

• Some earlier studies found that people who used benzos long-term were more likely to later be diagnosed with Alzheimer’s, sometimes by as much as 50 percent higher odds.
• This does not prove benzos cause dementia. Often, people are prescribed benzos because of anxiety, sleep problems, or memory issues, which can actually be early signs of dementia. That makes it hard to tell what is really happening.
• More recent research, such as a 2024 study that followed more than 5,000 older adults for 11 years, found no clear link between benzos and dementia risk.
  

Bottom line: The connection is uncertain. The risk may not be as big as early reports suggested, but scientists are still studying it.

Can Benzos Affect Thinking and Memory?

This part is clearer. Long-term benzo use, a year or more, is strongly linked to thinking and memory problems such as:

• Trouble remembering new things or recalling old memories
• Difficulty focusing on tasks
• Slower thinking and processing speed
• Harder time solving problems
  

The good news is that many people improve after stopping benzos, although it may take time and sometimes not everything fully goes back to normal.

Do Benzos Change the Brain Itself?

Newer studies suggest benzos might even affect the brain’s structure.

• A 2024 brain scan study showed that people taking benzos had smaller areas of the brain important for memory and emotions, such as the hippocampus and amygdala. These areas also shrank faster over time in users compared with non-users.
• Animal studies in mice found that long-term use of a benzo called diazepam led to the loss of connections between brain cells, with brain immune cells removing these links. This does not prove the same thing happens in people, but it shows a possible way benzos could affect the brain.
  

What Should You Do?

If you or someone you know takes benzos:

• Do not stop suddenly. Stopping cold turkey can be dangerous, leading to seizures, severe anxiety, or other withdrawal symptoms.
• Talk to your doctor. Ask if you still need them, or if there are other options.
• Explore alternatives. Treatments such as cognitive behavioral therapy (CBT) for anxiety or sleep, mindfulness, relaxation techniques, and healthy sleep habits can sometimes help without the risks of long-term benzo use.
• Plan a taper if needed. If it is right for you, your doctor can guide you through a safe, gradual dose reduction.
  

If it is hard to access medical care, try reaching out to a community clinic or a trusted support network to help you find resources.

The Big Picture

Benzos can be very helpful for short-term relief from anxiety or sleep problems, and sometimes they are even life-saving. But long-term use may cause issues with memory, thinking, or even physical changes in the brain. The link to dementia is not clear, but the concern is enough that most experts recommend using benzos short-term whenever possible.

Key Takeaway

Everyone is different. The safest choice is to work with a healthcare provider to figure out what is best for you or your loved one. Stay informed, stay safe, and know that there are options beyond long-term benzo use.

To Learn More

MedlinePlus: Benzodiazepines – Explains what benzos are and how to use them safely: https://medlineplus.gov/ency/patientinstructions/000758.htm

KidsHealth: Anxiety Disorders – Simple info on anxiety and treatments, including non-medicine options: https://kidshealth.org/en/teens/anxiety.html

World Health Organization: Mental Health – Global resource on mental health and finding help: https://www.who.int/health-topics/mental-health

National Institute on Aging: Alzheimer’s Disease – Easy guide to understanding Alzheimer’s and dementia: https://www.nia.nih.gov/health/alzheimers

HealthDirect: Medicines and Side Effects – Clear info on medicine risks, useful worldwide: https://www.healthdirect.gov.au/medicines-and-side-effects

Disclaimer
This article is for educational purposes only and is not medical advice. Do not start, stop, or change any medication without talking to a qualified healthcare provider.