Browse the evidence

Gut microbiota dysbiosis, characterized by decreased diversity and increased Proteobacteria, contributes to the pathogenesis of NAFLD by disrupting intestinal permeability and promoting hepatic inflammation via the gut-liver axis.

Focus on gut health as part of liver health. A diet high in fiber and low in processed additives may support a healthy microbiome, potentially reducing the risk of NAFLD progression. Probiotics and prebiotics are mentioned as potential therapeutic strategies.

In patients with insomnia disorder, hyperconnectivity within the anterior default mode network (DMN) and increased connectivity between the salience network (SN) and the anterior DMN underlie affective symptoms and hyperarousal.

For insomnia patients, this research suggests that the problem is not just 'trying to sleep' but involves specific brain networks (DMN and Salience Network) that are hyperactive and failing to deactivate. This supports interventions like Cognitive Behavioral Therapy for Insomnia (CBT-I) which aim to reduce this cognitive and emotional hyperarousal, rather than just focusing on sleep environment or supplements.

In patients with Obstructive Sleep Apnea (OSA), cognitive and depressive symptoms are linked to dysfunctional connectivity within the posterior default mode network (DMN) and its disconnection from the frontoparietal network.

For OSA patients, cognitive issues like memory loss or brain fog are not just because they are tired; they are linked to changes in the brain's 'default mode network'. This highlights the importance of consistent OSA treatment (like CPAP) to potentially reverse or mitigate these network disruptions, and suggests that cognitive symptoms may persist even if daytime sleepiness is managed.

Shorter blood telomere length (BTL) is associated with increased all-cause mortality risk in middle-aged individuals, whereas this association is absent or reversed in ultra-elderly populations (75+ years).

Blood telomere length (BTL) measurement can serve as a biomarker for mortality risk, but its interpretation is strictly age-dependent. For middle-aged adults (45-64), shorter telomeres correlate with higher mortality risk. However, for those over 75, this correlation disappears or reverses, likely due to survivor effects and biological changes in aging. Therefore, BTL should not be used as a standalone universal predictor of longevity without considering the patient's age cohort.

Higher scores on five distinct dietary indices (Nutrition Index, E-DII, HEI-2015, MDS, DASH) are significantly associated with increased risk of frailty and higher 8-year mortality risk in adults across all ages.

Adhere to established healthy dietary patterns such as the Mediterranean, DASH, or HEI-2015 guidelines. These patterns, which emphasize fruits, vegetables, whole grains, and healthy fats while limiting processed foods and added sugars, are associated with a lower risk of frailty and mortality. You do not need to track every nutrient; focusing on the overall quality of your diet is sufficient to gain these benefits.

Acute resistance exercise and endurance exercise produce distinct, mode-specific plasma metabolomic signatures, with resistance exercise preferentially increasing nucleotide breakdown products and lactate, while endurance exercise preferentially increasing lipid metabolites and ketone bodies.

To maximize specific health benefits, choose your exercise mode intentionally. If you want to improve fat oxidation and ketone production, prioritize endurance exercise. If your goal is to enhance glycolytic capacity and nucleotide turnover (often linked to strength and power), prioritize resistance exercise. Doing both covers a broader metabolic spectrum.

Inulin supplementation increases the abundance of Bifidobacterium, but this increase is a signature of intake rather than a direct driver of the observed metabolic improvements.

Don't assume that just because inulin boosts Bifidobacterium, that this specific bacteria is responsible for your health benefits. The actual metabolic improvements are linked to other changes in your gut bacteria, such as a decrease in Desulfovibrio and Clostridium sensu stricto.

Elevated circulating levels of branched-chain amino acids (BCAAs) and fatty acids (FAs) induce insulin resistance and metabolic dysfunction by promoting mitochondrial dysfunction and activating pro-inflammatory signaling pathways (NF-κB and NLRP3).

High levels of BCAAs and fatty acids in your blood are linked to insulin resistance and inflammation, which drive metabolic diseases. This often happens when your body struggles to process these nutrients (common in obesity or T2D) rather than just from eating them. Focus on improving metabolic flexibility and insulin sensitivity through exercise and balanced nutrition rather than assuming high BCAA/Fat intake is always beneficial.

Higher dietary resistant starch intake is NOT significantly associated with reduced cardiovascular disease (CVD) mortality.

Do not rely on resistant starch alone to protect your heart. This study found no significant link between RS intake and reduced cardiovascular mortality. While RS may offer other benefits, managing overall cardiovascular risk requires a holistic approach including blood pressure, lipid management, and overall diet quality, not just increasing RS.

There is no statistically significant association between weight loss (amount or frequency) and cancer mortality in men or women.

Losing weight, whether once or repeatedly, does not appear to reduce your risk of dying from cancer based on this study. Focus on other aspects of health.

Fecal Microbiota Transplantation (FMT) from lean donors does not result in significant weight loss or improved metabolic health in humans with obesity, despite showing benefits in some animal models.

Do not pursue FMT for weight loss at this time, as human trials have not shown benefit. Focus on dietary interventions which are more accessible and have stronger evidence for long-term health.

Perivascular Fat Attenuation Index (FAI) measured via cardiac CT serves as a biomarker for coronary inflammation and predicts cardiac mortality, with values above -70.1 HU indicating a 6- to 9-fold higher adjusted risk of future cardiac mortality.

If you are getting a heart scan for chest pain, ask your doctor about the Fat Attenuation Index (FAI). This AI-enhanced measurement looks at the fat around your heart arteries to detect hidden inflammation. A high FAI score means your risk of a heart event is much higher, even if your arteries don't look blocked yet. This helps doctors treat you before a major problem occurs.

Continuous postoperative pulse oximetry (CPOX) monitoring without preoperative obstructive sleep apnea (OSA) screening is a safe and effective perioperative strategy for bariatric patients.

For bariatric patients, skipping preoperative sleep testing and relying on continuous pulse oximetry monitoring after surgery is a safe alternative. This approach avoids the cost and time of preoperative screening while maintaining low complication rates, provided patients receive supplemental oxygen and monitoring during the first postoperative night.

Higher genetically predicted BMI does not increase the risk of cancer mortality.

While higher BMI increases risks for other causes of death, this study did not find a link to cancer mortality.

In people with suppressed HIV and metabolic dysfunction-associated fatty liver disease (MAFLD), adjunctive treatment with maraviroc, metformin, or their combination for 48 weeks does not significantly reduce liver fat fraction compared to antiretroviral therapy alone.

If you have HIV and fatty liver, adding maraviroc or metformin to your standard HIV treatment is unlikely to reduce the fat in your liver. The trial showed no significant benefit for liver fat reduction compared to just staying on your HIV medication. Focus on proven lifestyle strategies for metabolic health.

Genetic or pharmacological ablation of senescent cells extends life span and improves health span in mice by reducing age-related pathologies.

Current research indicates that clearing out aged, non-dividing cells (senolytics) can improve health and extend lifespan in animal models. While human trials are ongoing, the mechanism suggests that targeting these specific cells could help prevent age-related diseases.

Fecal Microbiota Transplantation (FMT) restores gut homeostasis and achieves higher recovery rates (90-94%) for Clostridium difficile infection (CDI) compared to standard antibiotic therapy (vancomycin, 60% recovery) by re-establishing colonization resistance via secondary bile acid production.

If you suffer from recurrent C. difficile infection, ask your doctor about Fecal Microbiota Transplantation (FMT). Clinical data shows it restores gut diversity and achieves higher recovery rates (up to 94%) compared to standard antibiotics like vancomycin (60%). It works by reintroducing healthy bacteria that produce secondary bile acids to inhibit C. difficile growth.

COPD represents an accelerated aging of the lung, characterized by shared mechanisms such as telomere shortening, cellular senescence, and impaired autophagy.

Understanding COPD as accelerated lung aging may open avenues for therapies targeting aging mechanisms (like senolytics or autophagy enhancers) in addition to standard smoking cessation and bronchodilators.

Exercise does not improve the Ankle-Brachial Index (ABI) in patients with intermittent claudication.

Do not expect your Ankle-Brachial Index (a blood pressure ratio) to change significantly with exercise. This test measures arterial blockage, which exercise does not fix. However, your ability to walk will still improve significantly despite the unchanged test score.

By 2030, approximately 50% of US adults are projected to be obese, and 78% will be overweight or obese, with significant disparities across racial and ethnic groups.

Prepare for a future where half of adults are obese and nearly 80% are overweight. This is not a distant threat but a current trajectory. Focus on culturally-tailored, sustainable interventions to mitigate personal risk and contribute to broader public health efforts.

Diet and physical activity based interventions during pregnancy do not significantly reduce the risk of composite maternal or offspring outcomes, nor individual outcomes like gestational diabetes, hypertensive disorders, or preterm delivery in IPD meta-analysis.

While lifestyle interventions may not significantly reduce the risk of all maternal and offspring complications combined, they do reduce weight gain and caesarean section risk. Focus on these proven benefits.

Increasing the training sample size of DNA methylation-based epigenetic clocks improves prediction accuracy of chronological age, which attenuates the association between age acceleration residuals (AAR) and mortality, suggesting previous associations were confounded by cellular composition.

Current 'epigenetic clocks' (like Horvath or Hannum) that claim to measure 'biological age' and predict mortality may be flawed because they are confounded by blood cell counts. Using larger, more precise datasets to build these clocks removes the mortality prediction, suggesting these clocks measure chronological time accurately but do not necessarily predict healthspan or lifespan. Do not rely on standard AAR metrics for mortality risk assessment without adjusting for cellular composition.

Specific gut bacteria extend host lifespan by interacting with host nutrient signaling pathways (IIS and mTOR), and this extension is lost if these pathways are disabled.

Some gut bacteria can extend lifespan by interacting with your body's nutrient-sensing pathways (like IIS and mTOR). However, this benefit is not universal; it requires your specific host pathways to be functional. Maintaining these pathways through balanced nutrition is key to leveraging potential microbiome benefits.

Innate and adaptive immune cells (Kupffer cells, monocytes, neutrophils, T cells) are central drivers of NASH inflammation and fibrosis, with specific pathways like NLRP3 inflammasome activation and CCL2/CCR2 monocyte recruitment being critical for disease progression.

NASH involves active inflammation driven by immune cells, not just fat accumulation. Targeting immune pathways (like CCL2/CCR2 or NLRP3) is a key area of research for treating NASH.