Could a Common Over-the-Counter Drug Be Harming Your Brain?
Many of us rely on over-the-counter medications to manage everyday health issues, such as allergies or pain. However, some of these common drugs might have unintended effects on our brain health. Recent studies have highlighted potential risks associated with certain over-the-counter and prescription medications, which could contribute to cognitive decline or even conditions like Alzheimer’s disease.
### Antihistamines and Brain Health
Antihistamines, commonly used to treat allergies, are among the medications that have raised concerns. Drugs like Benadryl and Zyrtec are anticholinergics, meaning they block the action of acetylcholine, a neurotransmitter crucial for memory and learning. While taking these medications occasionally is generally safe, long-term use can lead to brain atrophy, a sign of dementia. A study found that patients taking anticholinergics had greater levels of brain atrophy compared to those not on these medications[1][5].
### Benzodiazepines and Cognitive Risks
Another group of medications under scrutiny are benzodiazepines, such as Valium and Xanax, which are used as sedatives. Prolonged use of these drugs has been linked to shrinking of the brain’s memory centers, which can lead to symptoms of dementia like memory loss. Research suggests that taking benzodiazepines for more than six months significantly increases the risk of developing Alzheimer’s disease[1].
### Other Factors Affecting Brain Health
Beyond medications, other daily habits might also impact brain health. For instance, reheating food in plastic containers can release microplastics, which have been





