Can Bad Air Trigger Stroke? New Study Says Yes
Older adults, especially elderly men, face a higher risk of suffering from a brain stroke due to long-term exposure to polluted air, according to a recent study by researchers in China. The research highlights how tiny particles in air pollution, especially PM2.5, are a major factor behind ischemic stroke, a condition caused when blood flow to the brain is blocked.
What Is Ischemic Stroke?
An ischemic stroke happens when blood vessels supplying the brain become blocked, cutting off oxygen and nutrients. This type of stroke is the most common and can lead to serious disability or even death.
Study Tracks Stroke Trends Over Three Decades
Scientists from Shandong First Medical University studied data on ischemic stroke in China from 1990 to 2021. They examined how air pollution has affected people of different ages and genders. The study also made predictions about stroke risks from 2022 to 2036.
Their findings, published in BMC Public Health, showed some good news: stroke-related deaths and disabilities caused by air pollution have generally gone down over the years. However, the decline has been much slower in men—especially older men—than women.
Elderly Men Most at Risk
The researchers found that elderly males are more vulnerable to the harmful effects of air pollution. This calls for targeted actions to protect this group. “There is a clear need for male-focused policies to reduce exposure to air pollution and protect their health,” the study authors said.
How Air Pollution Affects the Brain
Other studies have also shown that both short-term and long-term exposure to polluted air can increase the risk of stroke. One of the reasons could be that fine particles like PM2.5 may lead to plaque buildup in blood vessels (atherosclerosis). This can block small and large arteries in the brain, triggering a stroke.
What Can Be Done?
The researchers stressed the need for stronger policies to improve air quality and raise awareness, especially among high-risk groups like elderly men. Suggested government actions include:
- Enforcing stricter limits on industrial emissions
- Promoting cleaner sources of energy
- Launching public health campaigns to educate people on the dangers of air pollution and how to protect themselves
Conclusion
Air pollution is not just an environmental issue, it’s a serious health threat, especially for older men. Understanding the risks and taking steps to reduce exposure can help prevent stroke and improve long-term brain health.
Source: Inputs from various media Sources
Priya Bairagi
Reviewed by Dr Aarti Nehra (MBBS, MMST)
I’m a pharmacist with a strong background in health sciences. I hold a BSc from Delhi University and a pharmacy degree from PDM University. I write articles and daily health news while interviewing doctors to bring you the latest insights. In my free time, you’ll find me at the gym or lost in a sci-fi novel.
