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Too much coffee may raise dementia risk

Drinking coffee daily can provide a welcomed mental jolt for many people. But new research suggests regular coffee drinkers should stop at five or six cups per day, as drinking more may increase their risk for dementia.

Can friends who listen help protect your memory and thinking skills?

A study published online Aug. 16, 2021, by JAMA Network Open suggests that older adults with good listeners in their lives have better thinking skills—despite decreases in brain volume—compared with people who don’t have good listeners in their lives.

Mentally challenging jobs may reduce the risk of dementia

People with jobs that are more mentally stimulating may have a lower risk of dementia later in life.

Do statins increase the risk of dementia?

A study published June 29, 2021, by the Journal of the American College of Cardiology (JACC) found no link between statin use and a higher incidence of dementia in adults ages 65 and older, but other studies have described possible cognitive changes related to statin use. Experts say that the benefits of taking a statin for people who have risk factors for cardiovascular disease generally far outweigh the risks. Statin use can reduce the risk of a heart attack or stroke by 25% to 30%.

Can medication help us combat Alzheimer’s disease?

Aducanumab is a newly approved drug for Alzheimer’s disease with the potential to reduce amyloid-beta plaque buildup in the brain. There are other medications being studied to see if they can reduce amyloid-beta, such as a monoclonal antibody that targets amyloid-beta before it forms plaques, and a monoclonal antibody that takes aim at plaque that has already formed. Other experimental approaches try to prevent tau tangles in brain cells, reduce brain inflammation, or reduce the amount of amyloid-beta that is produced.

Statins have no apparent link to cognitive problems or dementia

For older people, taking cholesterol-lower statins does not appear to affect their risk of developing cognitive problems or dementia.

A blood test may predict increased risk for Alzheimer’s disease

A study published online June 2, 2021, by the journal Brain found that a blood test may help to predict an increased risk for Alzheimer’s disease.

5 tips to help you age well

Aging well is sometimes a matter of luck, but there are some strategies that increase the chances of living well for longer. These include protecting brain health by adopting healthy lifestyle habits, walking regularly, and regularly reviewing medications to ensure that you still need to be taking them, that you are taking the correct dose and to prevent dangerous side effects. Other strategies such as learning to use technology to increase connections with others and using assistive devices, such as walkers or canes, can help people remain independent for longer.

The book of neurogenesis

The brain can continue to produce new neurons as people age, even late into life, through a process called neurogenesis. Right now, scientists are looking at why neurogenesis especially happens in the hippocampus, the region responsible for learning information and storing memories. Animal studies have shown that regular aerobic exercise is associated with an increased production of neurons in the hippocampus. If the same is true in humans, it may be the reason for the observed link between physical activity and maintaining cognitive fitness, and perhaps a lower risk of dementia.

Sleeping five hours or less may raise dementia risk

Adults ages 65 and older who sleep less than five hours per night have almost double the risk of being diagnosed with dementia compared with those who sleep the recommended seven to nine hours.

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