Browse the evidence

A composite panel of seven circulating senescence-associated secretory phenotype (SASP) proteins (GDF15, FAS, OPN, TNFR1, ACTIVIN A, CCL3, and IL-15) serves as a superior biomarker for predicting adverse postoperative outcomes and biological age compared to chronological age or single-protein markers.

This research suggests that measuring a specific set of 7 proteins in the blood (GDF15, FAS, OPN, TNFR1, ACTIVIN A, CCL3, and IL-15) can provide a more accurate assessment of biological age and surgical risk than chronological age. For older adults, this panel may help identify those at higher risk for complications after surgery, potentially guiding pre-operative care and post-operative monitoring.

In utero exposure to maternal hyperglycemia (gestational diabetes or elevated glucose levels) independently increases the risk of abnormal glucose tolerance, obesity, and higher blood pressure in offspring by age 7, independent of maternal pre-pregnancy BMI, birth weight, or childhood obesity.

If a mother has gestational diabetes or elevated blood sugar during pregnancy, her child is at a higher risk for metabolic issues like obesity and glucose intolerance by age 7, regardless of the child's birth weight. This risk is biological and programmed in utero. Parents should be aware of this increased risk and prioritize regular metabolic health monitoring (blood pressure, glucose, weight) for their children, especially if there is a family history of diabetes.

PGC-1α regulates ANT1 protein content, which influences submaximal ADP-stimulated respiration and intrinsic mitochondrial function.

Maintaining PGC-1α levels through exercise may support efficient energy exchange in mitochondria, potentially improving metabolic efficiency.

SIRT1 deficiency or inhibition leads to increased hepatic oxidative stress and inflammation by failing to deacetylate FOXO transcription factors and NF-kappaB, promoting the progression from steatosis to steatohepatitis.

Fatty liver isn't just about fat storage; it triggers inflammation and oxidative stress that damage the liver further. SIRT1 helps mitigate this by regulating antioxidant and anti-inflammatory pathways. Maintaining metabolic health supports these protective mechanisms.

CoQ10 supplementation (2400 mg/day) is safe and well-tolerated in patients with early-stage Huntington's disease, but does not slow functional decline.

If you or a family member has early-stage Huntington's disease, high-dose CoQ10 (2400mg/day) is safe but has not been shown to slow the disease's progression. Do not rely on it as a treatment for slowing decline.

Macrophage polarization towards the M1 pro-inflammatory phenotype is driven by glycolysis and the accumulation of TCA cycle intermediates (succinate, itaconate), which promotes the production of inflammatory cytokines (IL-1β) and contributes to metabolic disease.

Chronic low-grade inflammation, driven by immune cells like macrophages, is a key factor in metabolic disease. Supporting a healthy gut microbiome helps prevent the metabolic reprogramming of immune cells that leads to this inflammation.

Rapamycin inhibits the senescence-associated secretory phenotype (SASP) and reduces SA-β-gal staining in senescent cells through a mechanism independent of the Nrf2 pathway, likely involving Stat3 inhibition.

Rapamycin reduces the harmful inflammatory output (SASP) of aging cells without necessarily stopping them from dividing, and it does this via a pathway separate from the antioxidant response (Nrf2). This suggests that therapies targeting inflammation in aging might not need to address cell cycle arrest directly.

Knocking down Ketohexokinase (KHK), the first enzyme in fructose metabolism, improves hepatic steatosis and glucose tolerance in fructose-supplemented mice.

This paper identifies Ketohexokinase (KHK) as a key enzyme in fructose metabolism. Inhibiting KHK in mice improved liver fat and glucose tolerance. While this suggests a potential future therapeutic target for fatty liver disease, the most immediate action for humans is to reduce fructose intake, especially with high-fat diets.

Occupational exposure to pesticides and biocides is associated with an increased risk of thyroid cancer, particularly in male adults.

Workers in agriculture or pest control should strictly adhere to safety protocols to minimize exposure to pesticides and biocides, as these chemicals are linked to an increased risk of thyroid cancer, particularly in men.

Consumption of branched-chain amino acids (BCAAs) alone does not stimulate muscle protein synthesis or produce an anabolic response in humans; instead, it decreases muscle protein synthesis and turnover.

Taking BCAAs by themselves will not build muscle or increase protein synthesis in humans. In fact, studies show it may actually slow down muscle protein turnover. To build muscle, you need a complete protein source containing all essential amino acids, not just BCAAs.

Healthcare professionals should assess biochemical hyperandrogenism using validated tandem mass spectrometry (LC-MS/MS) for testosterone, avoiding direct immunoassays due to their limited accuracy.

When getting blood work for PCOS, ensure your doctor orders testosterone testing via 'tandem mass spectrometry' (LC-MS/MS). This is the gold standard for accuracy. Avoid standard immunoassays if possible.

Pharmacological or genetic reduction of ceramide synthesis (e.g., via myriocin or CERS6 inhibition) reverses insulin resistance, diabetes, and cardiovascular complications in rodent models.

Research shows that blocking the production of ceramides in animals reverses diabetes and heart disease symptoms. While direct human trials with drugs like myriocin are not detailed here, this suggests that therapies targeting ceramide synthesis could be effective treatments for metabolic diseases in humans.

Earmarking (hypothecating) health tax revenues for specific health objectives increases public support for the tax and political sustainability, whereas using revenues for general fiscal purposes leaves the tax vulnerable to lobbying and repeal.

To ensure health taxes survive political pressure, governments must earmark the revenue for specific health-related spending, such as subsidizing healthy foods or targeting child obesity. This builds public support and protects the tax from industry lobbying that often leads to repeal when revenues go into the general fund.

Abdominal obesity indices (CVAI, NC, WC, WHR, LAP, VAI) are not associated with the prevalence of diabetic retinopathy (DR) in diabetic adults, regardless of BMI adjustment.

Clinicians should not rely on abdominal obesity indices (like CVAI or Neck Circumference) to screen for diabetic retinopathy risk. Regular eye exams remain the gold standard for DR detection, as these body measurements do not correlate with retinal disease prevalence in diabetic patients.

Knockdown of fibrillarin reduces nucleolar size and extends lifespan in wild-type C. elegans.

Reducing the expression of the nucleolar protein fibrillarin extends lifespan in C. elegans. This suggests that inhibiting specific aspects of ribosome production can promote longevity.

Manipulation of specific branches of methionine metabolism, including the methionine cycle, transsulfuration pathway, and polyamine biosynthesis, can extend lifespan.

Targeting specific metabolic pathways involved in methionine metabolism, such as the transsulfuration pathway or polyamine biosynthesis, may offer longevity benefits. This can be achieved through genetic manipulation or dietary interventions that affect these pathways.

Aging and Alzheimer's disease are associated with impaired glymphatic clearance due to the loss of AQP4 polarization and reduced arterial pulsations.

As you age, your brain's natural waste clearance system becomes less efficient due to structural changes. Prioritizing sleep quality and Omega-3 intake may help mitigate this decline and support the clearance of toxic proteins like amyloid-beta.

In human obesity, elevated circulating leptin levels do not result in weight loss or reduced adiposity due to central leptin resistance, primarily caused by impaired transport across the blood-brain barrier and downstream signaling defects.

Having high leptin levels does not mean your body is successfully managing your weight. In obesity, the brain stops listening to leptin signals due to transport and signaling issues. This is not a permanent genetic sentence but a reversible physiological state. Weight loss can improve leptin sensitivity, breaking the cycle of resistance.

Prenatal exposure to the organochlorine pesticide DDT and its metabolite DDE increases the risk of developing metabolic syndrome (including obesity, insulin resistance, and hypertension) in offspring, primarily through epigenetic programming of energy expenditure and hypothalamic development rather than increased caloric intake.

If you have a family history of metabolic syndrome, consider that your risk may be influenced by environmental exposures your mother encountered during pregnancy, not just your current diet. While you cannot change your prenatal history, being aware of this risk factor allows for earlier screening and more aggressive management of blood pressure and glucose levels, as your body may be predisposed to store fat and resist insulin due to early-life programming.

Genetically predicted leisure television watching causally increases the risk of COVID-19 hospitalization and disease severity.

Reduce time spent watching television, as it is causally linked to higher risks of COVID-19 hospitalization and severity. This risk is mediated by metabolic factors like obesity and smoking, so replacing TV time with physical activity may mitigate these risks.

Conventional wastewater treatment plants are ineffective at removing many endocrine-disrupting compounds, leading to their presence in surface water and drinking water supplies.

If concerned about EDCs, consider using water filters certified to remove specific contaminants like BPA or pesticides, as standard municipal treatment may not remove them. Check local water quality reports for emerging contaminants.

Accumulation of succinate and itaconate in classically activated macrophages stabilizes HIF-1alpha, which promotes further glycolysis and inflammation, creating a feedback loop.

Specific metabolites (succinate) can act as signaling molecules to lock immune cells into an inflammatory state by stabilizing key transcription factors.

Vagal afferent signaling regarding food intake is primarily driven by mechanoreceptors (IGLEs) sensing intestinal stretch, rather than chemoreceptors sensing gut peptides like GLP-1.

When taking GLP-1 medications, part of the weight loss comes from the physical feeling of fullness (stretch) in your stomach and intestines, not just a chemical signal. This is why you feel full faster and stay full longer. The drug enhances these mechanical signals to your brain.

Existing anti-diabetic medications, including Metformin, GLP-1 agonists, and Verapamil, exert part of their therapeutic effect by downregulating TXNIP expression.

If you are taking Metformin or GLP-1 agonists (like Ozempic or Trulicity), one of the reasons they work is that they lower TXNIP levels in your body. This helps your cells use insulin better and protects your pancreas. This is a known mechanism, not a side effect.