Your Health Today
Study Finds Passive Screen Time May Increase Dementia Risk
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A new study is shedding light on how everyday habits — especially screen time — may impact long-term brain health.
Researchers found that “mentally passive” activities, such as watching television, are linked to a higher risk of developing dementia. In contrast, activities that actively engage the brain — like reading, solving puzzles, or learning new skills — may help reduce that risk.
The study followed more than 20,000 adults over nearly two decades and found a clear difference between passive and active sedentary behaviors. Participants who spent more time in low-engagement activities had a significantly higher likelihood of developing dementia later in life.
Researchers say even small changes can make a difference. Replacing just one hour of passive activity with something more mentally engaging was associated with about a 7 percent reduction in dementia risk. Combining mental stimulation with physical activity showed even greater benefits.
Experts say the key is keeping the brain challenged. Activities like reading, writing, playing games, or even having meaningful conversations can help maintain cognitive function over time.
It’s important to note the study does not prove cause and effect, but it does highlight a strong connection between how people spend their time and their long-term brain health.
The takeaway: staying both mentally and physically active may be one of the best ways to support brain health as we age.
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By: CNN Newsource
April 6, 2026
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