Tag: neuroplasticity

Lifestyle in Alzheimer’s Prevention: Insights from Dr. Dean Ornish’s Studies [Blog #28]

One of the diseases that scares me the most is Alzheimers (a type of Dimensia) which results in progressive memory loss and cognitive delays. We all have heard stories from friends and family who have lived through the pain of its impact. Nothing can be worse for the loved ones who are left to provide care without the familiarity of familial love and recognition.

One thing we can control is to educate ourselves on the current insights behind the causes of this disease and how to prevent it. We may not be able to guarantee escape from this disease but can make lifestyle changes that move the odds in our favor!

Dr. Dean Ornish, renowned for his pioneering work in lifestyle medicine, has significantly contributed to the discourse on preventive health, particularly in the context of chronic diseases. While Ornish is best known for his research on reversing heart disease through lifestyle changes, his approach has broader implications, including potential benefits for Alzheimer’s disease (AD) prevention. This blog explores how Ornish’s principles might apply to Alzheimer’s prevention, drawing from his broader research and the emerging field of lifestyle interventions in neurodegenerative diseases.

Dean Ornish’s Approach to Health

Dr. Ornish’s philosophy centers around the idea that lifestyle changes can not only prevent but also reverse many chronic illnesses. His program typically includes:

  • Diet: A low-fat, whole foods, plant-based diet.
  • Exercise: Moderate exercise like walking.
  • Stress Management: Techniques such as yoga, meditation, and breathing exercises.
  • Social Support: Engaging in community or group activities.

These elements are not just applied in isolation but as an integrated approach to health, suggesting that the synergy of these lifestyle factors could have profound effects on various health outcomes.

Link to Alzheimer’s Disease (AD) Prevention

One of Ornish’s key studies on Alzheimer’s prevention involved a randomized controlled trial that examined the effects of a comprehensive lifestyle program on cognitive function and brain structure. Participants in the program adopted a plant-based diet, engaged in regular moderate-intensity exercise, practiced stress management techniques, and participated in social support activities. The results of the study were promising, demonstrating that the lifestyle program was associated with improvements in cognitive function, including memory, attention, and executive function. Additionally, brain scans revealed increased gray matter volume in the hippocampus, a region of the brain critical for memory formation.

Ornish’s findings align with a growing body of evidence suggesting that lifestyle factors play a crucial role in Alzheimer’s prevention. For example, studies have shown that a Mediterranean diet, rich in fruits, vegetables, whole grains, and healthy fats, may reduce the risk of AD. Regular exercise has also been linked to improved cognitive function and brain health. Moreover, managing stress and maintaining strong social connections can help mitigate the negative effects of stress on the brain and promote overall well-being.

Applying Ornish’s Principles to AD Prevention

The translation of Ornish’s heart disease reversal principles to Alzheimer’s prevention involves understanding the underlying mechanisms:

  • Inflammation and Oxidative Stress: Both are central in AD pathology. A plant-based diet rich in antioxidants and anti-inflammatory compounds could mitigate these risks.
  • Vascular Health: Maintaining healthy blood flow to the brain is crucial. Ornish’s regimen improves vascular health, which might indirectly support brain health.
  • Neuroplasticity: Stress reduction and mental activity could enhance neural connections, potentially delaying cognitive decline.
  • Genetic and Epigenetic Factors: While genetics play a role, lifestyle can influence gene expression. Ornish’s work suggests that lifestyle can modify genetic outcomes, a principle increasingly recognized in AD research.

Conclusion

While Ornish’s research provides compelling evidence for the potential benefits of lifestyle interventions in Alzheimer’s prevention, it is important to note that more studies are needed to confirm these findings. Additionally, the long-term effects of lifestyle changes on AD risk and progression remain to be fully understood. However, the growing body of evidence supporting the role of lifestyle factors in brain health suggests that adopting a healthy lifestyle may be a valuable strategy for reducing the risk of Alzheimer’s disease.

Dr. Dean Ornish’s holistic approach to health through lifestyle modification offers a blueprint that could be adapted for Alzheimer’s prevention. Integrating diet, exercise, stress management, and social connection aligns with current best practices in neurodegenerative disease prevention. This blog highlights the potential of Ornish’s methodology as a framework for exploring non-pharmacological strategies in Alzheimer’s prevention, advocating for a lifestyle-centric approach that could benefit cognitive health. As research progresses, the integration of such lifestyle interventions might become a cornerstone in the fight against Alzheimer’s, encouraging a proactive rather than reactive approach to this devastating disease.

Hopefully, this eases some of your concerns about this disease as it has done for me.



Dear reader, If you wish to make a small donation so I can improve this blog and add more value, I would be very obliged. thanks!

One-Time
Monthly
Yearly

Make a one-time donation

Make a monthly donation

Make a yearly donation

Choose an amount

C$5.00
C$15.00
C$100.00
C$5.00
C$15.00
C$100.00
C$5.00
C$15.00
C$100.00

Or enter a custom amount

C$

Your contribution is appreciated.

Your contribution is appreciated.

Your contribution is appreciated.

DonateDonate monthlyDonate yearly

Interested in Instant Pot for ease of cooking? Here’s a shortcut link:

https://amzn.to/4bPpTLF

Replacement Vegan omega 3 pills:

https://amzn.to/3Vvpw3m

Amazon e-Gift cards:

https://amzn.to/3yMcENn

B12 Supplements for vegans:

https://amzn.to/4aRcguj

The Science Behind Taste Changes on a Vegan Diet [Blog #27]

When someone learns that I am vegan, they always declare to me, “I can’t go vegan because I can never give up cheese”. Or, “I love my bacon too much”. The funny thing is that I used to love cheese and milk-based sweets as well before I went vegan. It is not that I have repressed my desires to have these foods again but it is more like I no longer crave them. So, something clearly changed and it was my taste buds!

For me, the transition happened within the first couple of months! In general, they say your taste buds start to change within the first 3 months. In 3 to 6 months time, the cravings diminish significantly and after 6 months or so, the body and the palate adjust completely. Individual experience may vary but this was very similar to my own experience. I have been vegan for 6 years now and now even the sight of meat or the smell of cow’s milk is repulsive to me.

So, let us get into some detail about the science of this change in our palates.

When individuals adopt a vegan diet, their taste buds and overall perception of taste can change over time due to several physiological and psychological factors:

Reduction in Fat and Salt Intake:

  • Fat: Foods high in animal fats often coat the palate, which can dull taste buds over time. A vegan diet, typically lower in saturated fats, might initially make food taste less rich but can eventually lead to heightened sensitivity to other flavors.
  • Salt: Many animal products are naturally high in sodium or are prepared with additional salt. Reducing salt intake can initially make food seem bland, but taste buds adapt, becoming more sensitive to the natural flavors of food.

Increased Sensitivity to Sweetness:

  • Switching from diets rich in umami (savory flavors from meats) to plant-based foods might make one more sensitive to sweetness. This can be due to a lower baseline intake of savory flavors, making sweet tastes stand out more.

Changes in Gut Bacteria:

  • Diet influences gut microbiota, which can affect taste perception indirectly. Different foods encourage the growth of various bacteria, which might influence how tastes are processed or preferred.

Learning and Adaptation:

  • Taste is also psychological. As one learns to enjoy vegan foods, the brain’s reward system might start associating these flavors with pleasure, altering taste preferences over time.

Nutritional Changes:

  • Certain nutrients and their deficiencies can impact taste. For instance, zinc deficiency, which can occur if not carefully managed on a vegan diet, affects taste acuity. Conversely, a diet rich in antioxidants from plant foods might enhance taste by improving overall oral health.

The Science Behind It:

  • Taste Bud Turnover: Taste buds regenerate approximately every 10 days. This constant renewal means they can adapt to new dietary habits. Exposure to different compounds and less of certain fats and salts can lead to changes in how these new taste buds function.
  • Neuroplasticity: The brain’s pathways related to taste can undergo changes. When certain tastes are regularly absent (like those from meat), the brain may adjust its sensitivity to other available tastes.
  • Flavor Perception: Taste is only part of flavor; smell plays a significant role. A vegan diet introduces a variety of new aromas, which can enhance or alter perceived flavors.
  • Genetics: Genetic factors also play a role in how tastes are perceived. Some studies suggest that individuals might be predisposed to enjoy certain tastes, which could influence how they adapt to vegan diets.

Adaptation Period:

  • There’s often an adaptation period where vegan foods might not seem as flavorful due to the changes described. However, as the palate adjusts, many people report that plant-based foods become more enjoyable, with flavors becoming more nuanced and pronounced.

Over time, these changes mean that what was once perceived as bland or uninteresting might become rich and flavorful, illustrating how adaptable human taste preferences can be to dietary changes.

The time it takes to stop craving meat or dairy after going vegan can vary significantly from one individual to another due to several factors:

Factors Influencing Adaptation:

Psychological Dependency: Some people have strong emotional or cultural attachments to certain foods, which can prolong cravings.

Physical Dependency: For some, the craving might be linked to the body’s adjustment to new nutrient sources. For instance, the umami flavor in meat can be hard to replace, or the texture of dairy might be missed.

Diet Before Transition: If someone is a heavy meat or dairy consumer, the transition might be more challenging compared to someone who already has a varied diet.

Substitution and Variety: How well one finds substitutes that satisfy them can greatly affect how long cravings last. Finding vegan alternatives that mimic the taste or texture of meat and dairy can help reduce cravings.

Health and Lifestyle: Overall health, stress levels, and lifestyle can impact how quickly one’s body and mind adjust.

    In conclusion, for those of you who think they cannot go vegan because of their cravings, I challenge you to give it a go. Your tastebuds will respond in kind and your body will thank you. It is just a matter of time.



    Dear reader, If you wish to make a small donation so I can improve this blog and add more value, I would be very obliged. thanks!

    One-Time
    Monthly
    Yearly

    Make a one-time donation

    Make a monthly donation

    Make a yearly donation

    Choose an amount

    C$5.00
    C$15.00
    C$100.00
    C$5.00
    C$15.00
    C$100.00
    C$5.00
    C$15.00
    C$100.00

    Or enter a custom amount

    C$

    Your contribution is appreciated.

    Your contribution is appreciated.

    Your contribution is appreciated.

    DonateDonate monthlyDonate yearly

    Interested in Instant Pot for ease of cooking? Here’s a shortcut link:

    https://amzn.to/4bPpTLF

    Replacement Vegan omega 3 pills:

    https://amzn.to/3Vvpw3m

    Amazon e-Gift cards:

    https://amzn.to/3yMcENn

    B12 Supplements for vegans:

    https://amzn.to/4aRcguj