Every three seconds, someone in the world develops dementia, affecting over 55 million people worldwide -- a number expected to double every 20 years.

Did you know sitting for long periods, whether at work or home, doesn't just increase your risk of obesity, heart disease, and diabetes but can also raise your dementia risk? Researchers at UCLA found that sitting for at least 12 hours a day raises the risk by 63%.

Data suggests that physical activity and exercise help maintain brain health.

Poor oral hygiene is also linked to dementia. A study of 144 participants in Milwaukee found that severe tooth loss increased dementia risk by six times compared to those with fewer lost teeth.

We all know the mouth is the gateway to the body. If we clean our mouths properly, we can have a tremendous effect, not only in dentistry but also in overall health.

Other factors include not getting seven to nine hours of sleep, excessive alcohol use, and social isolation.

The effect of social isolation and loneliness on health is as powerful as smoking, high blood pressure, and obesity.

So, get some rest, drink in moderation, and reach out to a friend to keep your brain in good shape.

Studies show those over 65 who get a flu shot lower their risk of Alzheimer's, a common form of dementia, by 40%, while a pneumonia vaccine reduces dementia risk by 30%.