107 - Booze and Bugs, Sound Health, and Akkermansia - HealthHippieMD Week In Review

Routine Recall

Sticking to repetitive routines might seem beneficial, but research reveals it can harm memory and cognitive function. Breaking free from habitual activities, such as doing the same workouts or eating the same meals, can improve mental stimulation, rewire your brain, and even increase happiness. Diversifying daily activities like cooking new recipes, learning new skills, or engaging in varied physical exercises promotes neuroplasticity and better cognitive health. Simple changes help stimulate the brain, enhance memory, and foster a greater sense of well-being. Keep your brain active by embracing novelty and variety. The #1 Habit to Break to Improve Your Memory.

Parkinson's Disease May Start in the Gut

A recent study adds weight to the theory that Parkinson's disease might originate in the gut rather than the brain. Researchers found that damage to the gastrointestinal lining, such as ulcers and esophagitis, increased the likelihood of developing Parkinson's later in life. The results support the "gut-first" hypothesis, which posits that misfolded proteins in the gut could spread to the brain through the vagus nerve, contributing to the onset of Parkinson's. Early detection and treatment of gut issues may be crucial in reducing this risk. Parkinson's may begin in the gut, study adds to growing evidence - The Washington Post (gift article).

Brain Fluid's Far-Reaching Voyage

Recent research reveals cerebrospinal fluid (CSF) may travel far beyond the brain and spinal cord, challenging long-held beliefs. Researchers injected fluorescent tracers and gold nanoparticles into mice's brain chambers and discovered the fluid reached peripheral nerves like the sciatic nerve. This breakthrough suggests CSF and peripheral nerves interact in ways not previously understood, potentially revolutionizing drug delivery to otherwise hard-to-reach nerves. While much is still unknown, these findings open new doors in neuroscience and pain management, especially for conditions like Ehlers-Danlos syndrome. Brain fluid may travel to distant parts of body | Science | AAAS (Thanks, Amy!).

Age is Just a Number (or is it?)

How much does aging affect mental acuity? It's debatable explores the complex relationship between aging and mental acuity, debunking common misconceptions about the elderly and cognitive decline. It highlights that age alone doesn't determine mental function—factors like lifestyle, genetics, and environmental influences play pivotal roles. While aging can affect reaction time and memory, the brain retains adaptability through new learning strategies. Cognitive frailty, distinct from dementia, can signal increased vulnerability to stress, but it isn't inevitable. The piece urges regular cognitive screenings, physical activity, and social engagement to support healthy brain aging and prevent mental decline.

Sound Health

The National Center for Complementary and Integrative Health of the NIH is considering expanding its Sound Health Initiative. The Sound Health Initiative aims to: 1. expand current knowledge and understanding of how listening, performing, or creating music involves intricate circuitry in the brain that could be harnessed for health and wellness applications in daily life, 2. explore ways to enhance the potential for music as therapy for neurological disorders, 3. identify future opportunities for research, and 4. create public awareness about how the brain functions and interacts with music. The NIH is requesting information to build research capacity through career-stage training programs potentially. Request for Information (RFI): Inviting Comments on Early Career Stage Training Programs to Support Capacity Building for Music and Health Research | NCCIH. +see also: Information from the joint NIH/National Endowment for the Arts December 2023 Workshop: Music as Medicine: The Science and Clinical Practice | NCCIH

The Thick Truth About Akkermansia

Akkermansia muciniphila, a probiotic microbe, is gaining attention for its potential health benefits, including weight management, better blood sugar control, and stimulating satiety hormones. While studies suggest higher levels of Akkermansia are linked to better metabolic health, its role is still under scrutiny due to limited research and possible side effects, including heightened vulnerability to pathogens. Despite the buzz and celebrity endorsements, experts urge caution and recommend prioritizing diet and exercise for gut health before turning to expensive supplements like Pendulum's probiotic products. A probiotic called Akkermansia claims to boost health. Does it work? - The Washington Post (gift article).

Buy Less, Do More

Buy Experiences instead of Possessions to Build Social Connection | Scientific American explores how purchasing experiences, rather than material goods, fosters deeper social connections. Research shows that shared experiences, like attending a concert or hiking, create a stronger sense of kinship than owning similar material items. Even when experiences differ in quality, they encourage bonding more than possessions. Reflecting on experiences also promotes a broader connection to humanity, countering loneliness and enhancing well-being. The article suggests prioritizing experiences over things for personal happiness and social cohesion and encourages policymakers to invest in public spaces for shared activities.

Booze and Bugs

How Does Alcohol Affect Your Gut Health? - The New York Times (gift article) explores the complex relationship between alcohol consumption and the gut microbiome. Heavy drinking can lead to imbalances in gut bacteria, inflammation, and a "leaky gut" that releases toxins into the bloodstream, potentially damaging the liver. While moderate alcohol consumption may not have the same harmful effects, research on its long-term impact is limited. Studies suggest red wine improves microbial diversity due to polyphenols, but reducing alcohol consumption is recommended to promote overall gut health and reduce the risk of various diseases.

Processed Predicaments

Are Some Ultraprocessed Foods Worse Than Others? - The New York Times (gift article) delves into a recent study analyzing the varying health risks associated with ultra-processed foods. Researchers found that certain types, like sugar-sweetened drinks and processed meats, pose a greater risk for cardiovascular disease than others, while some foods, like cereals and yogurts, might even offer nutritional benefits. The study emphasizes distinguishing between harmful and less harmful ultra-processed foods and recommends prioritizing whole, unprocessed foods for better health. Reducing processed meats and sugary beverages remains a crucial takeaway for healthier eating.

067 - Invisible Wounds, Stellar Departures, and Shakespeare on Sleep - HealthHippieMD Week In Review

Moth Matriarchy

In an unexpected twist of fate, researchers in Japan have stumbled upon a virus that could revolutionize pest control by inducing a matriarchal society in moth populations. This unique virus, discovered within the tobacco cutworm, can eliminate male offspring, resulting in generations of female-only moths. This finding challenges our understanding of viral evolution and offers a promising tool for managing agricultural pests and disease vectors. The discovery, which could have easily fluttered unnoticed, now stands as a beacon of potential in the ongoing battle against crop-destroying insects, highlighting nature's intricate balance of power. Male-Killing Virus Is Discovered in Insects - The New York Times. (gift article)

Diet Debts

The United Nations has published a significant new tally of the world's food system's impact on our health and the planet, a staggering $12.7 trillion annually (about 10% of the world's GDP). The FAO report highlights that the majority of these costs stem from health-related issues due to poor diets leading to obesity and diseases. Environmental impacts follow, with significant disparities between low and high-income countries. The study suggests that better dietary choices, fairer trade practices, and sustainable farming could alleviate these financial burdens. The FAO urges a multifaceted approach involving government policy, consumer behavior, and industry practices to reduce these hidden costs. The World's Broken Food System Costs $12.7 Trillion a Year | WIRED.

Stellar Departures

In an exploration of humanity's final frontier, Their Final Wish? A Burial in Space, (gift article) delves into the lives of individuals who have chosen the cosmos as their final resting place. Contracting with Celestis, a company that offers memorial spaceflights, these seven people have opted to send their ashes or DNA into the vastness of space. Their reasons range from spiritual to pragmatic, with many driven by a lifelong passion for the stars. As traditional earthly bonds loosen, space burials represent a profound acceptance of the unknown, a testament to the human spirit's unyielding curiosity and desire for exploration.

Invisible Wounds: A Closer Look at the Markers of PTSD

How Post-traumatic Stress Disorder Works delves into the harrowing journey of Adam Kelley, a U.S. Army specialist who, despite returning home from Iraq, could not escape the clutches of PTSD, ultimately leading to his tragic suicide 13 years later. PTSD, a mental health condition triggered by traumatic experiences, is characterized by 17 symptoms, including agitation, anxiety, concentration issues, memory problems, depression, and mood swings. These symptoms can manifest in various intensities and are not uniform across all individuals. The article also explores the evolution of PTSD's understanding, from its initial identification in the American Civil War to modern research that includes genetic factors and the importance of social support. It highlights the military's vulnerability to PTSD, given the intense and life-threatening nature of combat experiences. The article concludes with insights into counseling and medication treatments for PTSD, cutting-edge research, and innovative approaches like virtual reality therapy and resilience training for soldiers.

Amazon's One Medical Priming the Market

Amazon is making its primary care boutique clinic, One Medical, cheaper for Prime subscribers. Amazon links One Medical primary care to Prime memberships - The Washington Post. (gift article)

Shakespeare on Sleep

Arthur Brook's article, Five Ways to Make Sure You Get More Sleep, using quotes from Shakespeare, delves into the elusive quest for restful slumber, a journey often hijacked by the mind's nocturnal wanderings. With 15% of American adults struggling to fall asleep, the nation's sleep debt is not just a personal nuisance but a public health concern. Sleep deprivation is linked to a myriad of health issues, from metabolic disturbances to mental health problems like depression and anxiety. The piece underscores the profound impact of sleep on our well-being and happiness, offering practical sleep hygiene tips and advocating for a personalized approach to sleep patterns. It suggests that embracing one's unique sleep rhythm and addressing life's stressors could be the key to unlocking the rejuvenating power of sleep and a happier life.

Mind Matters

Emerging research underscores a significant connection between mental health disorders in later life and an increased risk of dementia. Studies suggest that late-life mental illnesses, such as depression, maybe early indicators of dementia or could exacerbate its onset. While not all late-life psychiatric disorders lead to dementia, the correlation is strong enough to warrant cognitive testing for older adults presenting new psychiatric symptoms. The relationship between early-life mental health issues and later dementia is less definitive, though severe early mental illness does raise dementia risk. Overall, maintaining mental and physical health is emphasized as a preventative measure against dementia. Mental Illness May Affect Dementia Risk, Research Suggests - The New York Times. (gift article)

Psychedelics and Depression: Neuroplasticity without the Trip

Recent insights suggest that the mental health benefits of psychedelics like psilocybin and MDMA may not stem from their hallucinogenic effects. Researchers are now developing non-hallucinogenic variants that target neuroplasticity without the trip, potentially offering depression and PTSD treatments to a broader patient base. These novel compounds could reset emotional control and improve mood without the psychedelic experience by enhancing brain adaptability. This shift could redefine psychedelic therapy, focusing on neuroplastic potential rather than transcendental experiences, and streamline regulatory processes for easier access and research. What If Psychedelics' Hallucinations Are Just a Side Effect? - The Atlantic.

+More on the importance of neuroplasticity in mental health. Neuroscientists are Tantalizingly Close to Mastering How Psychedelics Redesign Our Brains.

Urban Wellness

Urban epidemiologist Tolullah Oni's research underscores a stark contrast in urban living conditions, revealing that affluent neighborhoods often boast better air quality, cooler temperatures, and safer spaces for physical activity. This disparity is critical as urban populations are set to double by 2050. Oni's work emphasizes the need for cities to address these inequalities proactively. The article highlights the importance of urban planning that considers health impacts, equitable access to public spaces, and the role of governments and the private sector in building healthier cities. Where You Live Is As Important As What You Eat | WIRED.

045 - Dying Brains, Frenemies, and the Physiology of Hangry - HealthHippieMD Week In Review

Flavanols Combat Memory Loss in Aging Adults

A new study reveals that flavanols, nutrients found in select fruits and vegetables, are crucial in mitigating age-related memory decline. The research demonstrates a positive correlation between flavanol intake and memory test scores among older adults. Notably, individuals over 60 with low-flavanol diets experienced significant memory improvement after reintroducing these dietary components. This study supports the emerging understanding that specific nutrients are essential for maintaining optimal brain health as we age. By highlighting the power of flavanols, the research offers potential avenues for improving cognitive function in older adults and underscores the importance of a flavanol-rich diet or supplements. Memory Boosting Power of Flavanols in Aging Adults

Gut Check

Scientists have discovered the mechanism behind how chronic stress can lead to gut inflammation. Signals originating in the brain reach gut nerve cells, triggering the release of inflammatory chemicals. The study, The enteric nervous system relays psychological stress to intestinal inflammation glucocorticoids act on gut neurons and glial cells, which then activate immune cells. These immune cells release molecules that cause painful bowel inflammation. The findings suggest that managing stress levels could significantly impact the effectiveness of treatments for inflammatory bowel disease (IBD). The research opens possibilities for targeting the brain-to-gut signaling pathway for new therapies. Chronic stress can inflame the gut — now scientists know why

Frenemies Take a Toll

According to psychologists, ambivalent relationships, known as frenemies, which combine positive and negative aspects, can be more detrimental to health than purely negative relationships. Research reveals that interacting with individuals who evoke mixed feelings can raise blood pressure and lead to negative physical symptoms. Even a single ambivalent interaction can have adverse effects on well-being. Unpredictability increases pain from unpleasant interactions, and rumination contributes to the negative impact of such relationships. Recognizing the harmful effects of frenemies is important for maintaining overall health and well-being. Opinion | Ambivalent Relationships May Be Hazardous to Your Health. (gift article)

The Neuroscience of Hangry

Neuroscientists have discovered a cluster of cells called AgRP neurons that stimulate appetite and play a vital role in the infamous "hangry" feeling. These cells near the brain's blood supply receive signals from the stomach and fat tissue, influencing our hunger levels. By manipulating AgRP neuron activity in mice, researchers have identified how they trigger food-seeking behavior and respond to the presence of nutrients. This breakthrough could lead to new therapies for eating disorders like anorexia and overeating. By understanding and controlling the hangry feeling, scientists hope to revolutionize our ability to manage our diets effectively. Neuroscientists May Have Found the Part of Your Brain That Makes You Hangry

Electrical Activity Surges in the Dying Brain

A new study reveals that dying brains experience a surge of electrical activity, challenging the assumption that brain activity decreases during dying. Researchers monitored four comatose patients who died in a neurointensive care unit and observed a surge of neurophysiological activity in regions associated with conscious processing. This surge included increased synchronization and connectivity between different brain regions. While the study doesn't directly explain near-death experiences, it suggests that the observed brain activity pattern may contribute to the vivid perceptions reported during such experiences, prompting further investigation into the nature of human consciousness. Scientists monitored four dying patients' brains. Here's what they saw . In the late 2000s, David Auyong and I observed the same phenomenon while on call: Processed electroencephalogram during donation after cardiac death.

Biochemistry of Psychedelics, BDNF, and Neuroplasticity

Psychedelics promote plasticity by directly binding to BDNF receptor TrkB | Nature Neuroscience reveals that LSD and magic mushrooms dramatically rewire the brain, offering new possibilities for treating depression. The research conducted by an international team of scientists from the University of Helsinki shows that, at least in a test tube, these psychedelics bind to a protein called receptor tyrosine kinase beta (TrkB), which activates brain-derived neurotrophic factor (BDNF). BDNF plays a crucial role in neuron growth and development. This discovery paved the way for developing safer and more effective treatments for mental health disorders. LSD and Magic Mushrooms Dramatically Rewire the Brain, New Study Reveals.

AIHits (Generative AI Music and Podcasts)

"What makes pop work is that it's always changing and always responding. This is just a feedback loop between systems." AI is having a profound effect on artistic expression in music. Now there's a website to listen to. AI Could Usher in a New Era of Music. Will It Suck?

+The Generative AI gold rush is on in the podcasting space, too, as if the genre wasn't already overcrowded: Generative AI Podcasts Are Here. Prepare to Be Bored.

The Evolutionary Significance of Dreaming

"REM [sleep] has been crucial to human creativity."The evolutionary significance of dreaming is an interesting video on BigThink.

External Stressors Affect Cancer Mortality

Surprise, surprise! Higher allostatic load, a quantitive measure of the cumulative physiological damage from stress, is associated with worse cancer outcomes: Evidence Emerges Showing External Stressors Adversely Affect Cancer Outcomes

Sucralose-Genotoxic?

At least in test tubes, new evidence shows that Sucralose (Splenda) can disrupt DNA. "It's time to revisit the safety and regulatory status of sucralose because the evidence is mounting that it carries significant risks." Sucralose Damages DNA, Linked to Leaky Gut: Study (thanks, Diana!)