Scitke

Tag: Dementia Risk

  • Following the MIND Diet May Lower Dementia Risk

    Following the MIND Diet May Lower Dementia Risk

    Recent studies suggest that your diet can either protect you from dementia or increase your risk.
    Credit: Pixabay

    Recent studies suggest that your diet can either protect you from dementia or increase your risk.

    As the global population ages, dementia is becoming more widespread, with the WHO predicting that 152 million people will be diagnosed with some form of the condition by 2050.

    Recent studies suggest that your diet can either protect you from dementia or increase your risk.

    Dementia Cases Expected to Surge to 152 Million by 2050

    As the global population ages, dementia is becoming more widespread, with the WHO predicting that 152 million people will be diagnosed with some form of the condition by 2050.

    People with lower dietary inflammation index scores were protected from dementia for longer. (Melo Van Lent et al., Alzheimer’s & Dementia, 2024)

    Inflammatory Diets Linked to Higher Dementia and Alzheimer’s Risk

    Individuals with diets that scored higher for inflammation had an increased risk of both all-cause dementia and Alzheimer’s disease. These scores were determined by the balance of pro-inflammatory factors such as saturated fats, total energy intake, and carbohydrates, alongside anti-inflammatory factors like fiber, omega-3 fats, and vitamins A, C, D, and E.

    “While these promising findings need further replication and validation, our results indicate that diets associated with lower dietary inflammatory index scores may help prevent dementia in later life,” the authors state.

    Another study discovered that individuals who followed a diet rich in foods that enhance the body’s antioxidant and anti-inflammatory functions experienced slower cognitive decline.

    The MIND Diet

    This diet, known as the MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay), has already been linked to slower cognitive decline, reduced dementia risk, alleviation of Alzheimer’s symptoms, and less disability.

    The new study supports these findings by examining a more diverse group, tracking over 5,200 older adults from Chicago—60% of whom were Black—over eight years.

    The MIND diet offered protection from cognitive decline for all participants, though Black individuals needed to adhere more closely to the diet than White individuals for similar benefits.

    Dementia Disparities Highlight Socioeconomic and Environmental Factors

    “Black and Hispanic older adults have a higher incidence and prevalence of dementia compared to White older adults,” the researchers note, highlighting the influence of broader socioeconomic, biological, and environmental factors.

    The MIND diet encourages the following eating habits:

    • At least 3 servings of whole grains per day
    • At least 1 serving of non-leafy green vegetables per day
    • At least 6 servings of leafy green vegetables per week
    • At least 5 servings of nuts per week
    • At least 4 meals with beans per week
    • At least 2 servings of berries per week
    • At least 2 meals with poultry per week
    • At least 1 meal with fish per week
    • Olive oil and avocado as primary sources of added fats

    Additionally, the diet recommends moderate limits on:

    • No more than 5 servings of pastries and sweets per week
    • No more than 4 servings of red meat (beef, pork, lamb, etc.) per week
    • No more than 1 serving of cheese and fried foods per week
    • No more than 1 tablespoon of butter or margarine per day

    The two studies address the impact of diet on dementia risk: pro-inflammatory diets increase the risk, while anti-inflammatory diets help reduce it.

    At this point, the research only demonstrates an association, not causation, and the exact reasons for these links remain unclear. However, adopting this approach is a relatively simple way to reduce dementia risk and potentially ease future healthcare challenges.

    Read the original aticle on: Science Alert

    Read more: How Your Food Choices Can Contribute to Anxiety and Depression

  • Daily Olive Oil Consumption Linked to Reduced Dementia Risk

    Daily Olive Oil Consumption Linked to Reduced Dementia Risk

    Nutritionists and medical researchers from the Harvard T.H. Chan School of Public Health have discovered evidence suggesting that daily intake of olive oil could lower the risk of dementia.
    Credit: Pixabay

    Nutritionists and medical researchers from the Harvard T.H. Chan School of Public Health have discovered evidence suggesting that daily intake of olive oil could lower the risk of dementia.

    In their research published in the journal JAMA Network Open, the team examined data from two extensive health databases, comprising thousands of individuals. They observed that those who consumed a minimum of 7 grams of olive oil daily had a reduced risk of dementia-related mortality.

    In fact, Previous studies have highlighted the health benefits of adhering to the Mediterranean diet, which emphasizes the intake of legumes, vegetables, nuts, fish, dairy, and olive oil.

    This recent investigation suggests that the significant presence of olive oil in such diets could play a pivotal role in promoting health.

    Uncovering the Potential Benefits

    To delve deeper into the potential advantages of regular olive oil consumption, the researchers analyzed data from over 60,000 women in the Nurses’ Health Study and more than 31,000 men in the Health Professionals Follow-up Study.

    These databases, spanning up to three decades, included information on causes of death.

    Among the 92,383 individuals in the databases, 4,751 had died from dementia-related causes.

    Upon comparing dietary habits, the team found that those who consumed at least half a teaspoon of olive oil daily were 28% less likely to succumb to diseases associated with dementia development.

    Additionally, the researchers observed that many individuals in the databases who regularly consumed olive oil over extended periods often substituted it for butter, mayonnaise, and other vegetable oils in cooking and dressings.

    Consequently, they consumed fewer of these alternative products, which could have influenced dementia rates.

    Furthermore, the team posits that following a Mediterranean diet, rich in olive oil, may lower the risk of dementia by mitigating inflammation induced by various factors.

    Read the original article on: Medical Xpress

    Read more: Strawberries’ Potential in Dementia Prevention

  • Does Obesity Prevent or Increase Dementia Risk?

    Does Obesity Prevent or Increase Dementia Risk?

    Several dementia advocacy organizations recommend maintaining a healthy weight to lower the risk of dementia. However, certain studies have proposed that obesity could potentially offer protection against dementia. What does scientific research reveal about this matter?
    Credit: Pixabay

    Several dementia advocacy organizations recommend maintaining a healthy weight to lower the risk of dementia. However, certain studies have proposed that obesity could potentially offer protection against dementia. What does scientific research reveal about this matter?

    The link between obesity and dementia appears strong initially, as obesity in middle age is associated with a higher risk of dementia later in life. However, complexities arise. Despite rising obesity rates, dementia rates in the West have declined. Moreover, an “obesity paradox” suggests obesity may reduce dementia risk.

    Addressing Causality Challenges with Limited Data

    Determining causality is challenging due to data limitations. Randomized trials would clarify, but they’re impractical and unethical. Thus, researchers rely on observational studies, which have biases like reverse causation and confounding.

    Recent findings highlight childhood intelligence’s role. Lower childhood intelligence correlates with higher obesity risk and poorer cognitive skills in midlife. Therefore, the link between midlife obesity and cognitive decline may be influenced by childhood intelligence, emphasizing the need for a nuanced understanding.

    So, how can we address these bias issues? One innovative approach is conducting Mendelian randomization studies, often dubbed “nature’s randomized trial.”

    In these studies, researchers divide a large population into two groups solely based on whether they possess a gene (or genes) associated with obesity. As these genes are randomly inherited, this naturally randomizes the population into two groups balanced for all factors except obesity status.

    While not without potential biases, any differences in dementia risk are attributed directly to obesity.

    Several studies, at least ten, have employed this method to investigate if obesity influences Alzheimer’s disease, the most prevalent form of dementia. Only one study has hinted at a connection between the two.

    Thus, returning to the question: does obesity truly elevate dementia risk? As scientists caution, the absence of evidence doesn’t imply evidence of absence. In other words, lacking sufficient data to confirm the link doesn’t necessarily disprove it.

    Science progresses gradually. With continued data collection and advancements in techniques, a more definitive answer to this question will eventually surface.

    In the meantime, it’s prudent to heed the advice of dementia charities and strive to maintain a healthy weight. Doing so not only lowers the risk of various other significant health issues but might also mitigate the risk of dementia.

    Read the original article on: Science Alert

    Read more: What Occurs When you Stop Taking Medication for Weight Loss?

  • A 1% Decrease in Deep Sleep Increases Dementia Risk by 27%

    A 1% Decrease in Deep Sleep Increases Dementia Risk by 27%

    A study has linked a reduction in deep sleep to increased dementia risk in over 60s. Credit: Pixaobay

    A recent study revealed that individuals aged 60 and above who experience an annual 1% decline in deep sleep are associated with a 27% higher dementia risk. These results indicate that preserving or improving deep sleep might serve as a preventive measure against the disease.

    Referred to as deep sleep, slow-wave sleep typically spans 70 to 90 minutes and predominantly takes place in the initial hours of the night. Besides being the sleep phase responsible for a refreshed awakening, deep sleep plays a crucial role in the body’s repair of muscles, bones, tissues, and fortification of the immune system.

    Link Between Deep Sleep and Dementia Risk

    Earlier research has proposed that the brain disposes of harmful proteins associated with dementia during deep sleep, but the connection between deep sleep and dementia development has remained unclear. However, a recent study conducted by Monash University researchers indicates that a decline in deep sleep is linked to an increased risk of dementia in individuals over the age of 60.

    Matthew Pase, a co-author of the study, stated, “Slow-wave sleep, or deep sleep, provides various forms of support to the aging brain, and we are aware that sleep aids in the removal of metabolic waste from the brain, including the clearance of proteins that accumulate in Alzheimer’s disease. Nevertheless, the role of slow-wave sleep in the development of dementia has been uncertain until now. Our findings suggest that the loss of slow-wave sleep might be a modifiable risk factor for dementia.”

    Sleep Assessments and Participant Demographics

    The study involved 346 participants who had undergone two overnight sleep assessments during the periods 1995-1998 and 1998-2001. The average age of these participants was 69, and roughly half (52%) were female.

    “We utilized these sleep studies to investigate the impact of aging on slow-wave sleep and whether alterations in the percentage of slow-wave sleep were linked to the risk of dementia in later life, spanning up to 17 years,” explained Pase.

    The researchers discovered that, on average, there was a decline in the amount of sleep between the two sleep studies, indicating that the aging process was linked to a reduction in deep sleep.

    Dementia Incidence and Deep Sleep

    During the 17-year follow-up period, there were 52 reported cases of dementia. After accounting for age, gender, genetic factors, smoking habits, and the use of sleep, anti-anxiety, and antidepressant medications, it was revealed that a decrease of one percentage point in deep sleep per year was linked to a 27% rise in the risk of dementia.

    The researchers also determined that the decline in deep sleep associated with aging was expedited in the presence of the genetic risk factor for Alzheimer’s disease, known as the APOE e4 allele. However, alterations in brain volume did not exhibit a similar correlation.

    “We also explored whether genetic susceptibility to Alzheimer’s disease or early signs of neurodegeneration in brain volume were related to a reduction in slow-wave sleep,” noted Pase. “Our findings indicated that a genetic risk factor for Alzheimer’s disease, rather than changes in brain volume, was linked to an accelerated decline in slow-wave sleep.”

    Read the original article on: New Atlas

    Read more: A Healthy Lifestyle May Help Prevent Depression, and New Research Delves into the Underlying Reasons