Episodi
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HEALTH NEWS Analysis of 82 Trials Shows Black Seed May Improve Cardiovascular Risk MarkersNew Study Reveals Herpesvirus Infection May Accelerate Alzheimer’s DiseaseFavorable lifestyle factors reduce dementia risk across key genetic profilesPeople are living longer, but spending more years in poor healthImbalances in the oral microbiome linked to symptomatic hand osteoarthritis Analysis of 82 Trials Shows Black Seed May Improve Cardiovascular Risk MarkersShahid Beheshti University of Medical Sciences (Iran), July 21 2026 (Natural News) A pooled analysis of 82 randomized controlled trials involving 5,026 adults has found that supplementation with Nigella sativa, commonly known as black seed or black cumin, is associated with improvements in multiple cardiovascular risk markers.
The meta-analysis, published in the journal Pharmacological Research, was conducted by researchers from several Iranian universities. The analysis used a GRADE-assessed, dose-response method to evaluate the effects of black seed compared with placebo or standard care.
According to the study, black seed supplementation led to significant reductions in body weight, body mass index, waist circumference, and body fat percentage. The analysis noted that daily amounts used in most trials ranged from 1 to 3 grams of ground black seed or 1 to 3 milliliters of black seed oil. According to the researchers, one teaspoon of ground black seed contains roughly 4 grams, meaning a single daily teaspoon stirred into food falls within the range used in studies. For those who prefer oil, a half teaspoon delivers close to 2 milliliters.
The researchers emphasized that consistency, rather than a large single dose, appears to drive positive results.
New Study Reveals Herpesvirus Infection May Accelerate Alzheimer’s DiseaseCardiff University (UK), July 21, 2026 (SciTech Daily)In a new study, researchers found that herpesvirus infection intensified memory problems and other Alzheimer’s-related changes in mice already vulnerable to the disease. The damage appeared to be driven not simply by the virus itself, but by the immune system’s prolonged attempt to control it.
Herpesviruses are a large family that includes viruses associated with cold sores, childhood infections, and glandular fever. After the initial illness passes, some can remain dormant inside the body and reactivate later, repeatedly drawing the immune system into action.
Scientists results suggest that T cells, immune cells that identify and attack infected cells, can enter the brain during herpesvirus infection and accelerate cognitive decline. Following infection, large numbers of immune cells moved into the brain. Most were CD8+ T cells that specifically recognized the virus, showing that they had entered the tissue as part of the body’s attempt to contain the infection.
Similar T cells have previously been found in the brains and spinal fluid of people with Alzheimer’s disease, although their exact role has remained uncertain.
The results indicate that a virus-driven immune response can actively speed the progression of Alzheimer’s-like disease rather than merely appearing alongside it.
Favorable lifestyle factors reduce dementia risk across key genetic profiles Kyushu University (Japan), June 5 2026 (News-Medical)With dementia cases expected to nearly triple worldwide by 2050, researchers are increasingly focused on identifying ways to prevent or delay the disease. While lifestyle and health-related factors, such as blood pressure control and physical activity, influence dementia risk, genetics also play a major role. Currently, it is unclear if maintaining a favorable lifestyle reduces dementia risk equally across different genetic backgrounds.
A new study led by Kyushu University examines whether favorable modifiable risk factors (mRF)-behaviors or conditions that people can change or control-can lower dementia risk even among individuals with high genetic susceptibility.
The researchers analyzed data from 9,605 community-dwelling adults aged 65 and older. They determined each participant's APOE ε4 genotypes, a primary genetic risk factor for Alzheimer's disease, and calculated the mRF score based on lifestyle and health-related factors. This allowed the team to evaluate how genetic predisposition and lifestyle choices jointly interact to influence dementia risk. The results showed that dementia risk rose progressively with the number of APOE ε4 alleles.
Notably, among individuals with one or no APOE ε4 alleles, maintaining a healthier profile with lower mRF scores was linked to a significantly lower risk of dementia. In contrast, among individuals with two APOE ε4 alleles, dementia risk did not differ significantly between those with lower and higher mRF scores.
These findings suggest that maintaining favorable lifestyle and health conditions can effectively mitigate dementia risk, even among individuals carrying a single APOE ε4 allele. This underscores the importance of population-based prevention strategies focused on managing vascular and lifestyle risk factors. People are living longer, but spending more years in poor healthInstitute for Health Metrics and Evaluation (US), July 21 2026 (Eurekalert)
People are living longer, but spending more years in poor health
The morbidity gap—the number of years people live in poor health—widened in nearly all countries, with wealthier nations facing the largest gaps. The US has the largest morbidity gap, closely followed by Australia and Canada. Women consistently live longer but spend more years in poor health than men. Musculoskeletal disorders, mental health conditions, hearing loss, and falls and other unintentional injuries are driving most years lived in poor health worldwide. Within a generation, the global morbidity gap widened by nearly two years, increasing from 8.8 years in 1990 to 10.7 years in 2023. Globally, people spent an average of 14.5% of their lives in poor health in 2023, up from 13.6% in 1990. Instead of occurring only in the final years of life, the widening morbidity gap was observed across the adult lifespan, suggesting that people are spending more years living with disease and disability throughout adulthood.Between 1990 and 2023, global life expectancy at birth increased from 64.6 years to 73.8 years, while healthy life expectancy rose from 55.9 years to 63.1 years. In 2023, the United States had the largest national morbidity gap at 14 years, followed by Australia at 13.9 years and Canada at 13.7 years.
Imbalances in the oral microbiome linked to symptomatic hand osteoarthritisCentral South University (China), July 21 2026 (Medica Xpress)
A study published RMD Open has linked specific imbalances and disruptions in the oral microbiome to symptomatic hand arthritis.
Its findings suggest that the microbial environment of the mouth may influence the disease process of hand arthritis, which is associated with pain, stiffness and reduced grip strength and can severely impair quality of life. The oral microbiome plays a role in systemic inflammation and interacts closely with the gut microbiome, which is significantly associated with symptomatic hand arthritis.
To assess the role of the oral microbiome, saliva samples from 52 people with symptomatic hand arthritis recruited from a community-based osteoarthritis study and 712 people without the condition were analyzed using ribosomal RNA gene sequencing.
Compared with samples taken from participants without hand arthritis, samples from participants with symptomatic hand arthritis showed significantly lower oral microbial richness and altered composition.
Specifically, the abundance of Trichococcus bacteria was significantly higher in the symptomatic hand arthritis samples and positively associated with the severity of hand arthritis symptoms. Trichococcus abundance in the oral microbiome was also positively associated with the gut microbial tyrosine metabolism pathway—a metabolic pathway previously implicated in hand arthritis.
Samples from participants with symptomatic hand arthritis also displayed reduced oral-gut microbiome correlations compared with controls, suggesting the balance between these two microbial communities was disrupted.
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Gary reads Part 2 of his latest essay "How to Live An Illuminated Life" you can read the whole article on Gary Null Substack https://garynull.substack.com/p/how-to-live-an-illuminated-life
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HEALTH NEWS
Ginger Induces Leukemia Cell SuicideResearchers Warn Rising CO₂ May Already Be Changing Human Blood ChemistryHourly Walking Breaks of 5 Minutes Can Mitigate Harms of Prolonged Sitting, Study FindsHeavy TV watching associated with smaller brain structures, study findsStudy: Microplastics in Blood Linked to Severe Heart AttacksGary reads Part 1 of his latest essay "How to Live An Illuminated Life" you can read the whole article on Gary Null Substack https://garynull.substack.com/p/how-to-live-an-illuminated-life
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Gary reads the second part of his article "Stop Living Life in Duality" you can read the full article on Gary Null Substack. If you like what you are reading, please subscribe because you'll get access to Gary's long essays, healthy recipes and inspiring self empowering videos and documentaries. https://garynull.substack.com/p/stop-living-a-life-of-duality
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Gary reads his latest article https://garynull.substack.com/p/stop-living-a-life-of-duality
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HEALTH NEWS
-Watching nature videos can help relieve stress, study finds-Study Finds Pesticide Residues in Infant Formula, Researchers Cite Health Risks-Dementia risk may also be reduced through diet-Going to the cinema, theater or a museum may slow down physiological aging-New Wearable Patch Boosts REM Sleep Without Drugs or Surgery
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Gary Null reads the second part of his essay How Tens of Millions Of American Jobs Were Deliberately Destroyed Since The 1970s. You can read the full article on Gary Null Substack https://garynull.substack.com/p/how-tens-of-millions-of-american
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How Tens of Millions Of American Jobs Were Deliberately Destroyed Since The 1970s - you can read the full article on Gary Null Substack. https://garynull.substack.com/p/how-tens-of-millions-of-american
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HEALTH NEWS Your Daily Orange Juice Could Have an Unexpected Health Benefit The Hectic Modern World Is Shredding Your Little Cave Man Brain, Scientists Confirm Sniffing chocolate scent boosts leg workout performance without extra effort Both synthetic and organic tampons found to leach hormone-disrupting chemicals, study shows Review Identifies 16 Medicinal Plants With Potential Antidiabetic Effects
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Is Our Educational System AnExistential Threat to Students’ Future?
By Gary Null PhD
Recently I watched a video on the YouTube channel A Homestead Journey called“Teachers Are DONE & Speak Out — Something Is Very Wrong With America’s Youth.”I believe the title is only partially correct. Something is indeed very wrong with a smallportion of America’s youth. But the youth are not the disease. They are the symptom.What is actually wrong is how some people are parenting.
You can read the full article on Gary Null Substack - https://garynull.substack.com/p/i-cant-do-it-alone-can-you-help-me
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HEALTH NEWS
-Mediterranean diet is associated with better psychological well-being, study suggests-Speaking another language could slow aging in the brain-Higher blood glucose levels linked to faster brain aging-New conceptual model links sacred moments to clinician well-being-Just one exposure to cocaine alters mouse brain cells for two weeks
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Gary reads the second part of his essay Is Our Educational System An Existential Threat to Students’ Future?
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Part 1 of Is Our Educational System An Existential Threat to Students’ Future?, you can read the full article on Gary Null Substack - https://garynull.substack.com/p/is-our-educational-system-an-existential?utm_source=activity_item
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HEALTH NEWS Melatonin may safely reduce chronic musculoskeletal pain, study findsStudy: Nordic Walking Reduces Depression Symptoms Within WeeksConnection or compulsion: How smartphones can deepen depression in older adultsThis Popular Workout Supplement May Give Cancer Immunotherapy a Big BoostProbiotic metabolite found to suppress melanoma tumor growth in mice Melatonin may safely reduce chronic musculoskeletal pain, study findsUniversity of Sydney, June 30 2026 (News-Medical)
A sleep supplement widely used to treat insomnia could help reduce reliance on some of the most common and potentially harmful pain medications, new research from the University of Sydney suggests.
Published in PAIN, the study found melatonin can reduce chronic musculoskeletal pain with effects in a similar range to medications such as opioids, non-steroidal anti-inflammatory drugs (NSAIDs) and paracetamol.
The study analyzed data from 2028 adults across 23 randomised controlled trials conducted in countries including the United States, Russia, Brazil, Egypt and China. Participants included people with conditions such as low back pain, osteoarthritis and fibromyalgia, as well as those recovering from surgeries including joint replacements and spinal procedures.
On average, the study found that melatonin reduced pain by around nine points on a 0-100 scale, with the most rigorous trials showing reductions closer to 10 points, a similar magnitude to widely used pain medications.
Across the trials, the dose and timing of melatonin varied depending on the condition and setting. For chronic musculoskeletal pain, doses typically ranged from 3 to 10 mg, with 3 mg per day the most commonly used. For postoperative pain, doses ranged from 1 to 10 mg, with 5 to 6 mg most common. Melatonin was generally taken at bedtime or up to one hour before sleep.
Study: Nordic Walking Reduces Depression Symptoms Within Weeks
Université Grenoble Alpes (France), July 1 2026 (Natural News) A randomized controlled trial published in the Journal of Affective Disorders found that supervised Nordic walking significantly reduced depression symptoms in adults with moderate to severe depression. The most pronounced improvements occurred within the first five weeks of the 10-week program, according to researchers. The study enrolled 64 adults, with 48 assigned to Nordic walking and 16 to a non-active control group.The findings challenge the commonly cited three-month timeframe for exercise benefits on depression.
A secondary analysis examined whether participants with severe depression responded differently than those with moderate symptoms. According to the study, Nordic walking is a low-impact activity that engages the upper and lower body using poles, similar to cross-country skiing.
The Nordic walking group showed significantly greater reductions in depression symptoms compared to the control group over the full 10 weeks. The largest reduction occurred from baseline to week five, with a large effect size; improvements from week five to week ten were smaller and not statistically significant. Participants with severe depression at baseline experienced even larger and faster improvements in the first five weeks, according to the secondary analysis.
Connection or compulsion: How smartphones can deepen depression in older adultsRutgers University, July 1 2026 (Eurekalert)
Compulsive smartphone habits in older adults can be linked to a higher risk of depression, according to a study led by a Rutgers researcher.
Researchers said their findings raised concerns that technology widely promoted to build connections can instead deepen late-life isolation: While mobile devices can be invaluable lifelines, their impact on mental health depends heavily on the way people use them. A critical distinction, the researchers said, is whether someone uses technology to actively engage with the world or to withdraw.
The study, published in JMIR Aging, drew on survey responses from 2,585 adults ages 60 and older living in 87 communities. Researchers collected health and demographic information, including age, gender, marital status, education and income, and measured depressive symptoms with a screening tool commonly used with older adults.
Limited social participation emerged as the strongest predictor of depression, followed closely by smartphone addiction, defined as compulsive or excessive use that disrupts daily functioning. Problematic phone reliance appeared in nearly all cases of clinical depression, with older adults who rarely used interactive communication features facing the greatest risk.
Another high-risk pattern emerged among older adults of both sexes: Those with higher incomes and education levels who suffered from smartphone addiction were more prone to clinical depression. This finding suggests that wealth, education, and technology access fail to protect against loneliness when screen time replaces real-world connections.
This Popular Workout Supplement May Give Cancer Immunotherapy a Big BoostUniversity of California at Los Angeles, July 1, 2026 (SciTech Daily)Creatine, a supplement widely used by athletes and bodybuilders, may also strengthen the immune system’s ability to fight cancer, according to new research from UCLA.
Previous findings from the same research team show that creatine boosts the activity of killer T cells, which destroy cancer cells. The new research found that creatine also supports dendritic cells, the immune cells responsible for detecting tumor material and activating killer T cells to launch an attack.
Although many approved cancer immunotherapies target killer T cells, only about 20% to 40% of patients benefit from these treatments. Enhancing dendritic cells, which prepare and activate T cells, could improve the effectiveness of immunotherapy for more people.
The researchers found that dendritic cells inside tumors produced much higher levels of the gene responsible for the creatine transporter, the protein that moves creatine into cells, than dendritic cells found in healthy tissue.
They investigated whether increasing creatine could improve dendritic cell performance. Daily creatine injections in mouse models of melanoma slowed tumor growth while increasing both the number and activity of dendritic cells within tumors. The treated dendritic cells also released more chemical signals that attracted additional immune cells to the tumor.
Probiotic metabolite found to suppress melanoma tumor growth in miceSouthern Medical University (China), June 30 2026 (News-Medical) Immune checkpoint inhibitors like anti-PD-1 have transformed melanoma treatment, yet more than half of patients fail to respond or eventually develop resistance. The tumor microenvironment and the gut microbiome are increasingly recognized as critical determinants of immunotherapy outcomes. Melanoma patients often show reduced levels of beneficial gut bacteria, including Bifidobacterium, and lower microbial diversity.Researchers have discovered that Bifidobacterium animalis—a probiotic commonly found in fermented dairy products—produces mannose, which activates CD8⁺ T cells and suppresses melanoma progression in mouse models. The study reveals a novel gut-microbiome-immune axis that could lead to new adjuvant strategies for melanoma immunotherapy. When given orally to mice with melanoma tumors, the bacterium significantly reduced tumor volume and weight—without ever colonizing the tumor tissue itself, indicating that its effects were mediated entirely through secreted metabolites.Using size fractionation and metabolomics, the team identified mannose as the key bioactive molecule—a small, non-protein compound under 3 kilodaltons. In mice, drinking water supplemented with 1% mannose replicated the anti-tumor effects of the live probiotic, increasing tumor-infiltrating CD8⁺ T cells and boosting their production of killer molecules like granzyme B (GZMB), interferon-gamma (IFN-γ), and tumor necrosis factor-alpha (TNF-α). -
HEALTH NEWS
Anti-inflammatory diet could reduce dementia risk by 31%, major study showsAnalysis shows artificial sweeteners may harm adult metabolism functionCould marigolds be the next superfood?Lifelong learning outperforms Alzheimer’s drugs, study findsNatural bioactive compounds target miR-29a molecule to prevent cancer development
Helen Buyniski joins Gary to discuss her latest piece Wikipedia's Monopoly on the Truth which you can read on Gary Null Substack - https://garynull.substack.com/p/wikipedias-monopoly-on-truth
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HEALTH NEWS Blueberries may boost children's memory and moodSlow Breathing Can Rewire Your Brain and Change the Choices You MakeTwo weeks of focused journaling could mean months of depression relief in young adultCommon Nutrients Could Make Alzheimer’s Treatments Safer and More EffectiveFat tissue could explain triple negative breast cancer spread—and point to treatments
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HEALTH NEWS
Longer breastfeeding links to fewer ADHD symptoms in childrenAsparagus emerges as a metabolic ally in blood sugar managementThis “Fake” Pill Improved Memory and Physical Performance in Just 3 WeeksA night without sleep alters neural connections in human brainsMidlife strength training linked to lower diabetes risk
Latest Article on Substack: https://garynull.substack.com/p/finding-security-in-an-insecure-world
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HEALTH NEWS Nuts hold key minerals, but digestion unlocks only part of themScientists Say a Daily Probiotic May Help Fight Depression in Older AdultsDo Collagen Supplements Really Work? Massive New Study Reveals the TruthEWG’s Dirty Dozen Guide to Food Regular arts and physical activity linked to slower aging
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The Gary Null Show - 6-25-26
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How To Heal A Broken Heart A New Approach to Overcoming Depression, Anxiety and other emotional
Conditions of Life. https://garynull.substack.com/p/how-to-heal-a-broken-heart
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