Roundup: Computer ‘Training’ Games Help Reduce Age-Related Cognitive Decline; and More News

Computer Game-Like Training Can Boost Aging Brain Chemistry, New Research Finds

New research finds that specific types of computerized game-like training can help counteract diminishing age-related cognitive functions.

With aging, it's natural for certain brain functions to slow down. One key part of the brain involved in memory and attention is the cholinergic system. This system uses a chemical messenger called acetylcholine to help brain cells communicate. Research shows that the effectiveness of this system can decline as we age.

Previous studies have shown that targeted cognitive training can translate into real-world benefits for older adults. Participants reported improvements in performing daily tasks such as managing finances, cooking, and handling medications, with some benefits lasting up to 10 years.

The new study, called the INHANCE trial, involved 92 healthy older adults aged 65 and over. Researchers wanted to see if computerized cognitive training could change the brain's cholinergic system. They used a special type of brain scan, known as a PET scan, to measure levels of a protein that transports acetylcholine in the brain. Higher levels of this protein suggest a healthier cholinergic system.

Participants were randomly split into two groups. One group, the intervention group, played speed-based training games. These games were designed to improve how quickly and accurately their brains could process information.

The other group, serving as an active control, played simple, non-speed-based computer games, like solitaire, for entertainment. Both groups completed 35 hours of training at home over a 10-week period. Brain scans were taken before and after the training period to measure any changes.

What Did the Researchers Find?

The results showed a significant difference between the two groups. The participants who completed the speed-based training showed an increase in the acetylcholine transporter protein in a key brain area called the anterior cingulate cortex. This part of the brain is important for attention and decision-making. The group that played simple computer games showed no such changes.

Specifically, the speed-training group saw a 2.3 percent increase in the protein's availability in this brain region. The researchers noted that this gain, achieved in just 10 weeks, could potentially offset the decline that typically happens over a decade of normal aging. The study also found similar positive effects in other brain regions associated with memory.

What This Means for Brain Health

This is the first study in humans to show that a specific type of cognitive training can directly lead to positive chemical changes in the brain's cholinergic system. It suggests that speed-based exercises don't just help you get better at the game; they can also help reverse some of the natural wear and tear that aging causes in brain networks supporting attention, memory, and executive function.

While more research is needed, this study provides strong evidence that engaging our brains with specific, challenging tasks can have a positive impact on brain chemistry.

CKM Syndrome: Most U.S. Adults Haven’t Heard About This Condition With Very Common Risk Factors

A recent survey by the American Heart Association revealed a significant health knowledge gap: About 90 percent of adults in the U.S. have never heard of cardiovascular-kidney-metabolic (CKM) syndrome. This is a newly defined health condition that connects heart disease, kidney disease, diabetes, and obesity.

Understanding CKM syndrome is important, as it affects a vast majority of the adult population. CKM syndrome describes the connection between your cardiovascular system (your heart and blood vessels), your kidneys, and your metabolic system. The body’s metabolic system is responsible for how your body creates, uses, and stores energy from food. This process affects factors like your weight and blood sugar levels.

These three systems don't work in isolation; they are deeply interconnected. When one system isn't functioning well, it can negatively impact the others, creating a cycle that increases your risk for serious health problems. For example, poor metabolic health can lead to high blood sugar, which can damage the kidneys. Damaged kidneys can struggle to balance fluids, leading to high blood pressure that strains the heart.

Who is at Risk?

Research shows that nearly 90 percent of U.S. adults have at least one risk factor for CKM syndrome. These risk factors are common and include:

• High blood pressure
• Abnormal cholesterol levels
• High blood glucose (sugar)
• Excess body weight
• Reduced kidney function

Having several of these risk factors at the same time increases your risk for a heart attack, stroke, or heart failure much more than any single risk factor on its own. The good news is that for many people, CKM syndrome is reversible through lifestyle changes, such as improving eating habits, increasing physical activity, and getting the right medical treatment.

The Importance of Coordinated Care

A common misconception is that it's best to manage health conditions one at a time. However, because the heart, kidneys, and metabolic system are so linked, a coordinated approach to care is essential. Treating these systems together, rather than as separate issues, leads to better overall health outcomes.

The survey found that while most people are unfamiliar with CKM syndrome, they are interested in learning how it is diagnosed and treated. The first step is to be aware of the connection. Regular check-ups that monitor your blood pressure, cholesterol, weight, blood sugar, and kidney function are key to understanding your overall CKM health.

By recognizing how these systems work together, you and your healthcare team can create a more effective plan to protect your long-term health and prevent serious disease. The American Heart Association is developing new guidelines, expected in 2026, to help doctors and patients manage CKM health more effectively.

Hidden Fat May Damage Arteries, New Study Finds

A new study reveals that fat hidden deep inside the body can silently harm the arteries, even if a person appears healthy and has a normal body weight. The findings, published in Communications Medicine, challenge the common belief that body-mass index (BMI) is the ultimate measure of health and highlight the risks of unseen fat.

Researchers from McMaster University, a public research university in Hamilton, Ontario in Canada, focused on two types of hidden fat: visceral fat and hepatic fat.

• Visceral fat is the fat that wraps around your internal organs, like your stomach and intestines.
• Hepatic fat is fat stored inside your liver.

While these fats were already known to increase the risk for conditions like Type 2 diabetes, their specific impact on artery health was less clear.

What the Study Uncovered

The research team analyzed data from over 33,000 adults in Canada and the United Kingdom. Using advanced MRI scans, they measured the amount of visceral and hepatic fat in participants and examined the health of their arteries.

Specifically, they looked at the carotid arteries, which are major blood vessels in your neck that supply blood to your brain. When these arteries become thick or clogged with plaque, it increases the risk of a stroke or heart attack.

The results showed a strong connection between hidden fat and artery damage. Higher levels of visceral fat were directly linked to thicker artery walls and more plaque buildup. Liver fat also showed a connection, though it was not as strong as visceral fat. These links remained even after researchers accounted for other risk factors like cholesterol, blood pressure, and lifestyle habits.

Why This Matters for Your Health

This study serves as an important reminder that you can't always judge health by appearance. According to the researchers, someone can have a significant amount of this metabolically active, dangerous fat without being visibly overweight. This hidden fat can contribute to inflammation and artery damage quietly over time.

The findings suggest that traditional tools like BMI and waist measurements may not be enough to assess a person's true risk for heart disease. For clinicians, this may mean using more advanced imaging to get a clearer picture of a patient's fat distribution.

In a news release, Sonia Anand, corresponding author of the study, a vascular medicine specialist at Hamilton Health Sciences and professor in the Department of Medicine at McMaster, explains: “This kind of fat is metabolically active and dangerous; it’s linked to inflammation and artery damage even in people who aren’t visibly overweight. That’s why it’s so important to rethink how we assess obesity and cardiovascular risk.”

The takeaway from the study, researchers say, is that managing health goes beyond the number on a scale. Even if you look healthy, it's crucial to be aware of the potential dangers of hidden fat. The research underscores the importance of a healthy lifestyle to reduce all types of body fat, not just the fat you can see.