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Top-performing men hate to feel out of their groove, and that can happen with the cognitive changes that can come with aging. As you grow older, you may experience cognitive changes like forgetfulness and reduced focus. But when they worsen and start to interfere with your work and relationships, that's the point where you see your healthcare provider.
These changes are not unusual. 50 to 80% of adults aged 70 and older who score within normal ranges on cognitive tests report some perceived decline in their cognitive abilities; however, cognitive changes with aging vary considerably between individuals, and cognitive decline is not inevitable (Prince et al., 2024).
So, how do you determine what's normal and what isn't? What can you do to support your brain function? You may even wonder if your testosterone levels have anything to do with cognitive function. This article will provide answers.
As we get older, we may notice some changes in how quickly we process information and remember things. However, studies indicate the extent and rate of these changes vary considerably from person to person, and cognitive decline is not inevitable (Prince et al., 2024).
Age isn’t the only factor that determines how your cognitive health changes over time. Addressing modifiable risk factors such as exercise, sleep, social connection, diet, smoking, and alcohol use may help support cognitive health and, in some cases, reduce the risk of cognitive decline.
Differentiating between the three levels of cognitive aging helps you understand the concept better.
In normal cognitive aging, you can experience forgetfulness and slower thought processing, but these changes do not necessarily interfere with your ability to manage daily functions (Prince et al., 2024). You might occasionally forget a name or word for a few seconds, but you can retain long-term knowledge, general facts, and vocabulary. Sometimes, you'll take longer to learn something new or walk into a place and briefly forget your train of thought. These changes can feel frustrating, but if your symptoms start to interfere with activities like managing medications, finances, or preparing meals, you should see a licensed healthcare provider.
People who experience mild cognitive impairment suffer memory or thinking problems more than is expected for normal aging. Others may notice these changes, such as family members, friends, and sometimes coworkers. However, they remain independent and can manage most day-to-day activities.
People with MCI can remain stable or improve while others gradually progress to some form of dementia. Up to 16% of older adults over age 70 have mild cognitive impairment (Peterson RC, 2016).
Dementia isn't a single condition. Rather, it's an umbrella term for disorders of brain function that cause cognitive decline severe enough to interfere with daily life (World Health Organization, 2023). The Alzheimer's Association says that Alzheimer's disease is the most common form of dementia, accounting for approximately 60% to 80% of all dementia cases.
People with dementia suffer from problems like persistent memory loss, difficulty learning new information, impaired judgment, language problems, reduced problem-solving abilities, and difficulty completing familiar tasks (World Health Organization, 2023).
As we age, the brain's structure alters, and these changes can include volume shrinkage, decreased blood flow, and less effective communication between the brain cells (Prince et al., 2024). The hippocampus and the prefrontal cortex are brain regions that show notable changes with aging (Snytte et al., 2024).
The role of the hippocampus is to form new memories and store information for recall later. As people age, the hippocampal volume tends to reduce (Woodward et al., 2024). These structural changes occur alongside age-related memory changes, which can vary between individuals. For example, some older adults may find learning or recalling new information more difficult while retaining older memories. The prefrontal cortex is responsible for executive function. It helps regulate attention, planning, decision-making, multitasking, working memory, impulse control, and problem-solving. Changes in the prefrontal cortex with age can lead to slower thinking and reduced mental flexibility.
However, changes in brain structure do not always lead to noticeable changes in cognitive function, and research is still ongoing to understand how this happens. One possible explanation involves neuroplasticity, the brain’s impressive ability to adapt by forming new connections and reorganizing existing communication routes throughout life. Actions like learning new skills, remaining physically active, challenging the brain with unfamiliar tasks, and maintaining strong social relationships encourage these adaptive changes. It's also intriguing that this helps explain why two men of the same chronological age can have very different levels of cognitive performance if one maintains healthy routines and the other doesn't.
Other causes of cognitive decline include lifestyle factors such as smoking and alcohol intake, mental health conditions, cardiovascular conditions, etc. Although aging remains the strongest risk factor for cognitive decline, research shows that many of the aforementioned risk factors are also significant. The 2024 Lancet Commission estimated that up to 45% of dementia cases could potentially be delayed or prevented by addressing factors such as high blood pressure, hearing loss, obesity, diabetes, smoking, excessive alcohol intake, depression, physical inactivity, and social isolation(Livingston et al., 2024).
While these interventions cannot eliminate the risk, they highlight an important reality: protecting your physical health often helps protect your brain as well. Now, how do these factors even contribute to cognitive decline? Let's find out.
The brain relies on a healthy heart and blood vessels to maintain its blood supply, and that means risk factors like high blood pressure, diabetes, and obesity that increase the risk of cardiovascular disease can also negatively affect brain health (Sorond et al., 2026). Over time, vascular disease can contribute to changes in the brain that make it more vulnerable to cognitive decline (Sorond et al., 2026).
The link between cardiovascular and brain health suggests that managing your blood pressure, cholesterol, blood sugar, and body weight may help preserve brain health. However, reducing vascular risk alone does not fully restore brain health, and that implies that there may be a need for other strategies that target the vascular changes (Sorond et al., 2026).
Your brain benefits from regular movement just as much as your muscles do. Physical activity increases blood flow to the brain, improving many of the same cardiovascular risk determinants associated with dementia. Research consistently associates regular exercise with better cognitive health outcomes across adulthood(Gomez-Pinilla and Hillman, 2013).
Exercise also appears to stimulate the release of proteins that support communication between brain cells and encourage the formation of new neural connections (Babaei and Azari, 2022). Current evidence doesn't explain how exactly this happens, but we know that physically active older adults generally experience slower cognitive decline than those with sedentary lifestyles (Quigley et al., 2020). Following a balanced exercise program for men over 50 can make it easier to incorporate strength training, aerobic activity, mobility, and recovery into a sustainable routine.
Hearing loss is associated with a higher risk of cognitive decline and dementia, although it’s unclear whether this relationship is direct or there are other contributory factors (A. Bisogno et al, 2021).
One proposed explanation is that as hearing gradually declines, the brain must devote more effort to understanding speech, leaving fewer mental resources available for memory and thinking (Powell et al, 2022)..
Mental and brain health are closely connected, and this one isn’t surprising. Depression has 3 cardinal symptoms: a low mood, reduced energy, and a loss of interest in pleasurable activities. Any of these symptoms can reduce concentration, impair memory, slow thinking, and make it harder to learn new information.
Anxiety can interfere with attention and working memory by redirecting mental resources toward worry rather than the task at hand.
Chronic stress also affects the brain in measurable ways. Long-term elevation of stress hormones has been associated with changes in the hippocampus, a key brain region involved in memory (Kim, 2015).
A poor night's sleep can affect attention, alertness, memory, and thinking the next day. Occasional sleep disturbance won’t; however, persistent sleep disturbances may have longer-term consequences for brain health.
During sleep, the brain performs important maintenance functions, including consolidating new memories and clearing metabolic waste products that accumulate during the day's activity. Chronic sleep deprivation interferes with these processes and has been associated with a higher risk of cognitive decline in observational studies (Biswas D et al, 2025).
Poor sleep is also associated with other risk factors, including high blood pressure, obesity, diabetes, and depression, creating multiple pathways that affect cognitive health (Yang et al., 2024).
Every day, we engage in some form of social interaction at home, work, school, or anywhere we find other people. These varying conversations continuously challenge our memory, language, emotional regulation, and problem-solving skills, and that's one way our brain stays engaged.
Evidence available indicates that efforts that improve social connectedness may be important for reducing dementia risk and maintaining cognitive health (Umoh, 2026). The underlying mechanisms remain unclear, and further research may help demystify them.
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Shop NowYes, low testosterone may affect memory and focus. Some of the non-specific symptoms of low testosterone include poor concentration and memory (Bhasin et al., 2018). When many men start to experience symptoms of cognitive decline, they wonder if a dip in testosterone levels is implicated. Looking at the broader benefits of testosterone can also help explain the hormone's role in areas beyond sexual health, including energy, mood, and body composition. Speak with your healthcare provider if you want to know whether low testosterone levels are responsible for your symptoms. They can review your symptoms and medical history, and order testosterone testing at the office or through an at-home testosterone test. You can also learn more about the symptoms of low testosterone.
However, you must know that testosterone therapy is not recognized as a treatment for cognitive decline. A one-year study of 493 men with age-associated cognitive decline who got testosterone treatment shows no significant differences in verbal memory, visual memory, or executive function compared to the placebo group (Resnick et al., 2017). At Feel30, our providers review your results to help uncover what may contribute to your symptoms. If your symptoms could be related to hormones or another underlying issue, they can help determine the next steps and connect you with the right care.
How Can You Protect Your Brain as You Age?
You can grow older without losing cognitive function to a point that it affects your everyday life. Although no single lifestyle strategy can prevent cognitive decline, it's well established that dementia onset can be delayed or prevented.
Here's what you have to do:
Stay Physically Active: Regular physical activity improves blood flow in the brain and supports cardiovascular health (Tomoto et al, 2023). Moreover, exercise raises your testosterone.
Eat a Brain-Healthy Diet: Diets such as the Mediterranean and MIND diets are associated with better cognitive health and a lower risk of dementia (Ogarrio K, 2025).
Avoid Smoking and Limit Alcohol Consumption: Avoiding smoking and excessive alcohol consumption may help reduce modifiable risks associated with cognitive decline (Livingston et al., 2024).
Occasional changes in memory or thinking can happen as you age and don’t necessarily mean something is wrong. If these changes become persistent or begin to interfere with your everyday activities, discuss them with your healthcare provider.
There is no guaranteed way to prevent cognitive decline or dementia, but you may prevent or delay cognitive decline if you maintain a healthy lifestyle- regular exercise, good diet, adequate sleep, and managing factors like blood pressure, blood sugar, and cholesterol.
No. Low testosterone may contribute to brain fog, reduced concentration, fatigue, and difficulty focusing, which can sometimes resemble cognitive impairment. However, these symptoms are different from age-related cognitive decline or dementia. Current research has not shown that testosterone replacement therapy improves memory, cognitive function, or thinking in men experiencing normal cognitive aging.
You should have your memory evaluated if you start to experience memory loss, changes in thinking, or other cognitive symptoms that are becoming more frequent or are interfering with work, relationships, or daily activities. Early diagnosis is important because some causes of cognitive impairment, such as vitamin deficiencies, thyroid disorders, sleep problems, medication side effects, depression, or low testosterone, may be treatable. If a neurodegenerative condition such as mild cognitive impairment (MCI) or Alzheimer's disease is identified, an early diagnosis also provides more opportunities for planning, treatment, and ongoing support.
A little mental slowing can be a normal part of aging for some people, but changes that disrupt your daily life aren't, and they deserve a proper assessment. The encouraging part is how much you can influence, since up to 45% of dementia risk is tied to factors you can treat or change. If you’re experiencing symptoms like brain fog and fatigue, you should discuss low testosterone as a potential cause with a healthcare provider. checkable issue.
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