Alzheimer's Isn't Out of Your Control: Manage These Risk Factors Today

Christine Bryden was astounded in 1995, when doctors diagnosed She has been diagnosed with Alzheimer's. Just a year earlier, the 46-year-old biochemist had received Australia’s Public Service Medal for exceptional contributions to science and technology. “I was at the peak of my career,” she states on the YoungDementia UK website. “However, that pivotal afternoon altered everything, leaving me feeling struck down in my prime.”

As she reflected, Bryden started to think that her medical prognosis might be linked to how she lived her life. She consistently lacked sufficient rest, maintained an unrelenting work schedule, and experienced extremely high stress levels. Each evening, upon returning home with a heap of tasks awaiting her attention, she would immediately immerse herself in them right after hurriedly arranging things for her young daughters before bed. Every following dawn found Bryden awakening, continuing her workload, followed by preparing her daughters for their daily routines.

Looking at her lifestyle

"It could be possible that insufficient sleep has impaired my cognitive function to some degree. Additionally, heightened levels of stress might have exacerbated this impairment," she notes. Bryden’s observation isn’t entirely misplaced. Despite medical professionals having treated Alzheimer's for many years, the precise reasons behind the condition remain elusive. Generally speaking, researchers think that the illness stems from various factors. initiated by various genetic and lifestyle elements Each one of these affects the brain gradually over time. Although individuals cannot alter their age or the genetic traits they inherit at birth, they can For one thing, they could stop smoking and begin consuming healthier meals instead. Additionally, increasing physical activity and shedding pounds would be beneficial. Reducing alcohol intake and engaging their minds more often could also make a difference.

A risk factor simply denotes an element that raises a person’s likelihood, or probability, of encountering a specific health issue. Certain risk factors, such as age, are “unmodifiable,” indicating they can’t be avoided. Conversely, others might be altered through adjustments in one's daily practices. Below, we examine several widely recognized risk factors for diseases. Alzheimer's disease And what, if at all, actions might be taken regarding them.

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Almost Half of dementia cases can be prevented, according to the key points from the report released in 2024.

In 2022, approximately 2.3 million Americans aged 65 and over received a diagnosis of dementia, which has heightened worries amongst vulnerable elderly individuals regarding preventive measures. According to the 2024 Lancet dementia report, there are now 14 primary risk factors along with an additional two newly recognized ones, indicating that up to 45% of dementia instances might be prevented through continuous interventions throughout one’s life. To learn more about this, read the complete article.

Non-modifiable risk factors

Age

As we age, some degree of memory decline is typical, but Alzheimer’s isn’t considered part of this norm. According to experts, around the age of 65 to 70, approximately 1.5%—or about 15 individuals per thousand—are diagnosed with Alzheimer's Disease (AD). This likelihood rises progressively over time. When we turn 75, the rate nearly triples to become 3.5%, equating to roughly 35 cases for every thousand people. Upon reaching 80 years old, the incidence climbs further to 6.8%. And remarkably, when someone reaches centenarian status at 100 years old, almost half—or 44.5%—of them may be living with AD.

Family history

Our likelihood of developing Alzheimer's disease could be linked to our genetic makeup. According to researchers, if an individual’s parent or brother/sister suffers from this condition, Your risk goes up by approximately 30 percent. Additionally, there's a higher likelihood of developing Alzheimer's disease if both parents have been affected.

Ethnicity

Some studies suggest That ethnic minority groups, particularly African Americans, exhibit elevated levels of dementia compared to Caucasian populations. Researchers have lately discovered two additional genes in African Americans which could heighten this risk. Among these genes, one stands out for particular mention. ABCA7 aids in the production of cholesterol and lipids. Some experts think that Alzheimer’s could be linked to issues with how our body processes fats. Additionally, conditions like high blood pressure and diabetes might contribute to the risk, particularly for elderly African American and Latino individuals. There is also a possibility that low-income individuals facing restricted access to education Due to systematic bias affecting both communities, the illness advances more rapidly.

Brain injury

Researchers believe a A traumatic brain injury raises the likelihood of developing Alzheimer's disease. And other types of dementia. One study found Older individuals who have experienced a moderate traumatic brain injury—defined as losing consciousness for over 30 minutes—are 2.3 times more prone to developing Alzheimer’s disease compared to those without such injuries. Those with severe brain trauma, characterized by loss of consciousness exceeding 24 hours, face an even higher likelihood, being 4.5 times more at risk for Alzheimer’s. It should be noted that not all people who suffer from head injuries go on to develop Alzheimer's or another form of dementia. Additionally, current data does not support the notion that experiencing a minor brain injury raises this particular risk.

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Modifiable risk factors

Heart health

Regarding Alzheimer’s disease, whatever harms your heart can also harm your brain. Experts suggest that issues with the cardiovascular system may be connected to the development and progression of Alzheimer’s as well as various types of dementia in older individuals. research study from 2017 conducted by scholars at Johns Hopkins University Monitored approximately 16,000 individuals who were middle-aged across four different states over a period of about 25 years, starting in 1987. Throughout this time frame, scientists conducted numerous medical examinations, memory assessments, and cognitive evaluations. By the end of the research, around 1,500 participants received diagnoses related to dementia. This data supported previous findings indicating that having cardiovascular risks during one’s midlife—such as diabetes or hypertension—increased their likelihood of later experiencing dementia. Additionally, the investigators validated earlier suggestions made by other studies: cigarette smokers faced an elevated risk for developing dementia.

Alcohol use

For many years, researchers have explored whether there is a connection between alcohol consumption and Alzheimer’s disease. Interestingly, one particular study discovered that consuming up to three glasses of wine daily could decrease the likelihood of developing Alzheimer’s. However, only in individuals with the APOE e4 gene . Other studies Researchers have highlighted the positive impacts of consuming wine in small to moderate amounts. According to their findings, light to modest alcohol intake helps safeguard the brain by decreasing blood viscosity—making it less thick—and boosting levels of high-density lipoprotein (HDL), often referred to as "good" cholesterol, within the body.

As mentioned, two comprehensive analyses of various research studies concluded that Individuals who engage in heavy drinking or binge drinking have a higher likelihood of developing Alzheimer's disease (AD) and other types of dementia. Those who engaged in binge drinking had higher rates than those who consumed alcohol in moderation. According to the study, Centers for Disease Control The definition provided by the Centers for Disease Control and Prevention indicates that consuming five or more beverages within approximately two hours qualifies as binge drinking for males, whereas females reach this threshold after ingesting four or more drinks during the same timeframe.

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Obesity

Obesity leads to numerous health problems such as diabetes, hypertension, cardiac disorders, and various cardiovascular issues. Additionally, it appears to significantly contribute to AD, increasing a person's risk twofold. chance of forming amyloid plaques - the boogeyman of Alzheimer’s - particularly in later years. Previous studies examining how an individual's weight affects their likelihood of developing dementia have yielded inconsistent findings. Some studies say if you have obesity, you face a greater danger of developing dementia. Other studies However, they have associated below-normal body weight with a higher risk of developing dementia.

In 2017, though, scientists finally resolved almost every query related to obesity and Alzheimer's. A 38-year research involving 1.3 million adults People residing in the United States and Europe found that individuals with a high body mass index (BMI) are at greater risk of developing Alzheimer’s disease and other types of dementia compared to those maintaining a healthy weight.

In that same research, experts discovered that individuals experiencing early-onset dementia along with a low Body Mass Index (BMI) tend to progress to full-fledged dementia more frequently compared to those within a normal weight range. According to investigators, this occurs because both being overweight and having a lower body weight during the preliminary stages of dementia alter how the body processes fats. This study implies that keeping a balanced weight might help ward off the condition—or at minimum delay its impact.

In what ways lifestyle choices can have an impact.

In 2017, scientists from Great Britain revealed that altering your way of life could create obstacles for Alzheimer's disease. Although there are no guaranteed methods to entirely prevent AD, these experts suggest that certain adjustments in daily habits might help decelerate its advance.

The research carried out by the Lancet Commission on Dementia Prevention, Intervention and Care examined nine potential contributors. They determined that over a third of all Alzheimer’s instances can be linked back to these elements, suggesting that steering clear of them throughout one's lifetime might halt or significantly slow down cognitive decline. To arrive at this conclusion, they reviewed numerous previous investigations into Alzheimer's disease. Statistical examination revealed that up to 35% of dementia occurrences could potentially be avoided through comprehensive management of these factors along with some additional behavioral aspects. Experts emphasized that efforts against Alzheimer's should commence early—right when kids first enter schooling.

The shorter duration a child spends in education, the higher the likelihood of them developing Alzheimer’s as adults. The study revealed that individuals with zero years of secondary schooling faced an elevated risk, amounting to a 7.5 percent increase for Alzheimer's disease. Therefore, the research team advises keeping children enrolled in schools up until at least the age of 15.

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Lifestyle changes

The research further suggests that individuals of all ages should increase physical activity, quit smoking, engage more in social activities, lose weight, and address depression. As stated by the primary researcher, “Even though dementia is identified at an advanced stage of life, the associated brain alterations often start decades earlier. The elements contributing to this condition can emerge anytime during one’s lifetime, not only in senior years.” Gill Livingston, Ph.D. , a professor of psychiatry focused on elderly patients at University College London. "We think that adopting a more comprehensive strategy for preventing dementia, one that takes into account these evolving risk factors, could greatly benefit our aging communities and aid in reducing the global increase in dementia cases,"

The study sparked controversy as the researchers grounded their findings in a statistical examination of prior works instead of direct patient investigation. In contrast, a comparable U.S.-based study adopted a more cautious approach, suggesting that certain adjustments to one’s way of life might enhance cognitive function. However, this study did not provide conclusive evidence supporting these claims. Despite lacking definitive proof, scientists remain highly interested in exploring how lifestyle factors influence brain health. In 2017, the Alzheimer's Association initiated a $20 million clinical study. With 2,500 participants to determine if modifications in lifestyle can help prevent cognitive decline and dementia.

Although lifestyle modifications can benefit certain individuals, they may not be effective for everyone. This discrepancy exists due to various factors contributing to why some develop Alzheimer’s disease while others remain unaffected. Genetic predisposition is one such factor, particularly evident in instances of early onset. Individuals with late-onset Alzheimer’s—where signs appear around their mid-60s—are often affected by intricate alterations within the brain that unfold gradually over many years. Researchers generally agree that genetic makeup, personal habits, and surrounding environment collectively influence the development of this condition.

Ways to Maintain Mental Acuity and Reduce the Risk of Alzheimer’s

Have an extra cuppa

It turns out that coffee is rich in numerous brain-enhancing nutrients. A study featured in the BMJ revealed that adults who consume three to four cups of caffeinated coffee daily tend to have a reduced likelihood of developing Alzheimer’s disease and other forms of cognitive decline. This benefit stems from coffee's blend of beneficial antioxidants along with caffeine, which not only boosts immediate alertness but also improves focus over time.

Take a hike

According to research published in Frontiers in Human Neuroscience, engaging in organized and consistent physical activity, like taking a regular stroll each day, can help slow down mental deterioration. Such exercises enhance circulation and boost levels of noradrenaline, an important neurotransmitter for neural communication within the brain. For optimal effects, aim for a half-hour walk at least three times every seven-day period.

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Savor tuna salad

Omega-3 fatty acids aid in the development of brain and nerve cells. Research indicates that these fatty acids may also assist in preventing Alzheimer’s disease and other forms of age-related mental deterioration. Fish like salmon, albacore tuna, herring, and sardines are excellent sources of omega-3s—try to consume at least 8 ounces of this type of fish each week.

Sleep easy

A review of over 50 studies indicated that consuming at least 3 milligrams of melatonin every day for between six to twelve months enhanced cognitive performance. This sleep hormone aids in achieving better quality sleep, which supports overall brain health. Additionally, it decreases oxidative stress, a key factor in the process of brain aging.

This piece was featured in our partner publication Alzheimer’s: New Hope for a Cure in 2020, along withWoman's World in 2024.

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