Browse the evidence

Resveratrol improves metabolic health and insulin sensitivity by activating SIRT1 and AMPK pathways, leading to increased energy expenditure and lipid mobilization, although its clinical efficacy is limited by extremely low systemic bioavailability due to rapid metabolism.

Resveratrol activates metabolic pathways like SIRT1 in lab settings, but in humans, it is metabolized so quickly that very little reaches your tissues. While it may offer minor metabolic benefits, it is not a magic bullet for weight loss or insulin sensitivity due to poor bioavailability. Focus on diet and exercise instead.

Gut microbiota dysbiosis in PCOS patients causes insulin resistance and hyperandrogenism through endotoxemia (LPS leakage), altered short-chain fatty acid production, and bile acid metabolism disruption.

For women with PCOS, dietary changes that support gut health (like low-carb, high-fiber diets) may help reduce insulin resistance and hormone imbalances by improving gut barrier function and reducing inflammation. This is not a quick fix but addresses a root cause of the condition.

Lifestyle interventions for gestational diabetes do not significantly reduce the risk of caesarean section, pre-eclampsia, or induction of labour compared to usual care.

For women with gestational diabetes, lifestyle interventions do not significantly reduce the risk of caesarean section, pre-eclampsia, or induction of labour compared to usual care.

Lipophagy, the selective autophagic degradation of lipid droplets, serves as a cytoprotective mechanism that prevents lipotoxicity and cell death (necrosis/apoptosis) by mobilizing fatty acids for energy production (ATP synthesis) and reducing toxic lipid accumulation.

Your body has a natural system (lipophagy) to break down stored fat for energy when needed. This process helps protect your cells from damage caused by excess fat. While you cannot directly 'dose' this molecular pathway, supporting metabolic health through regular physical activity and avoiding chronic overnutrition helps maintain the efficiency of your body's natural lipid management systems.

Iron fortification of wheat flour may have little to no effect on anemia or iron deficiency, and in some cases, poor diet quality can compromise its benefits.

Iron-fortified wheat flour may not effectively reduce anemia in populations with poor overall diet quality due to low bioavailability. Complementary dietary improvements are necessary for this intervention to be effective.

Government-imposed public life restrictions and lockdowns during the COVID-19 pandemic caused a substantial, global decrease in physical activity levels, specifically moderate-to-vigorous (MVPA) and vigorous physical activity (VPA).

If you are facing lockdowns or facility closures, expect your activity levels to drop significantly. Proactively plan home-based or outdoor activities to mitigate this loss, as the default response to restrictions is a ~40% drop in exercise volume.

Pandemic-related lockdowns led to a significant decrease in compliance with WHO physical activity guidelines, dropping from 80.9% to 62.5% of the population.

Check if you are still meeting the 150 minutes of moderate or 75 minutes of vigorous activity per week. Lockdowns make this harder, so you need to be intentional about scheduling movement.

Social media influencers promote a cognitive association between body perfection (low body fat, visible musculature) and happiness/health, driving followers to adopt restrictive dieting and exercise behaviors to achieve this ideal.

Be critical of fitness influencers on Instagram. Recognize that their content is often designed to sell products (supplements, sportswear) and create a dependency on their lifestyle advice. If you feel inadequate after viewing their posts, remember that their images are curated and edited. Seek health advice from certified professionals who do not have a financial stake in selling you specific products.

The health benefits of dietary polyphenols are not determined by the polyphenols themselves, but by the specific microbial metabolites (postbiotics) produced by an individual's gut microbiota, leading to significant inter-individual variability in health outcomes.

Don't just focus on eating polyphenol-rich foods; understand that your gut bacteria decide if those foods help you. Some people convert these compounds into powerful health-promoting metabolites (postbiotics), while others do not. This explains why the same diet affects people differently.

Elevated plasma branched-chain amino acid (BCAA) levels contribute to the development of insulin resistance through multiple mechanisms, including mTOR/S6K-mediated inhibition of insulin signaling, inhibition of pyruvate dehydrogenase (PDH), and accumulation of toxic metabolites causing mitochondrial dysfunction.

If you have insulin resistance or Type 2 Diabetes, be mindful of very high intakes of branched-chain amino acids (found in red meat, dairy, and supplements), especially when combined with high-fat meals, as this may worsen insulin sensitivity. Focus on balanced protein intake rather than extreme high-protein or high-fat combinations, and prioritize exercise which helps clear BCAA.

Pharmacological activation of the BCKD complex using agents like BT2 or Sodium Phenylbutyrate (NaPB) accelerates BCAA catabolism, lowers plasma BCAA levels, and improves insulin sensitivity in animal models of obesity and diabetes.

Current research shows that drugs like BT2 and NaPB can fix BCAA metabolism issues in lab animals, improving insulin sensitivity. However, these are not yet approved or proven safe for humans for this purpose. Focus on exercise and balanced nutrition to naturally support BCAA clearance.

High dietary fructose intake increases intestinal permeability by downregulating tight junction proteins (occludin and ZO-1) and altering microbiota composition, leading to increased systemic endotoxin levels.

If you consume high amounts of added fructose (e.g., high-fructose corn syrup or large amounts of juice), you may be compromising your gut barrier integrity. This can lead to increased inflammation and endotoxin levels. Focus on whole fruits with fiber rather than isolated sugars to mitigate this risk.

Physical activity is not consistently associated with a reduced risk of incident hypertension.

While exercise is crucial for heart health and diabetes prevention, do not rely on it alone to prevent high blood pressure. The evidence is inconsistent. Monitor your blood pressure and consult a doctor for specific management strategies, as lifestyle factors other than PA may play a larger role in hypertension.

Different forms of cell death (apoptosis, necroptosis, pyroptosis) in adipose tissue have distinct inflammatory consequences; necroptosis is highly inflammatory and linked to metabolic dysfunction, while apoptosis may trigger anti-inflammatory macrophage responses.

Not all fat loss is created equal. The way fat cells die matters. Necroptosis (inflammatory cell death) worsens metabolic health, while apoptosis might sometimes trigger a less inflammatory response. Strategies that minimize inflammatory cell death may be metabolically superior.

Omega-3 polyunsaturated fatty acid (n3-PUFA) supplementation promotes amyloid-beta clearance and protects AQP4 polarization, thereby enhancing glymphatic function.

Consider incorporating Omega-3 fatty acids (via diet or supplementation) to support brain health. Research suggests they help maintain the polarization of AQP4 channels, which are critical for the glymphatic system's ability to clear waste products like amyloid-beta from the brain.

There is insufficient evidence to set specific, quantified (time-based) recommendations for total sedentary time.

Do not worry about hitting a specific number of sitting hours. Instead, focus on the general principle of limiting sedentary time and breaking up long periods of sitting with light movement. The exact threshold varies by individual and health outcome.

Enhancing autophagic activity, particularly through genetic upregulation of autophagy-related genes (e.g., Atg5) or chaperone-mediated autophagy receptors (LAMP2A), extends lifespan and mitigates age-related physiological decline in mammalian models.

While you cannot directly 'dose' autophagy like a supplement, the paper highlights that nutrient restriction (Caloric Restriction) and specific stressors (like exercise or low-dose stressors inducing hormesis) activate autophagy. The most actionable takeaway is that maintaining metabolic flexibility and avoiding chronic overnutrition supports the autophagic clearance mechanisms that decline with age.

Decline in mitophagy and autophagy with age leads to the accumulation of damaged mitochondria and ROS, contributing to sarcopenia, neurodegeneration, and cardiovascular decline.

Exercise is a known inducer of autophagy and mitophagy. Maintaining physical activity, especially aerobic and resistance training, may help counteract the age-related decline in these clearance pathways, protecting muscle and brain health.

Citrus flavonoids (specifically nobiletin, diosmin, and 8-prenylnaringenin) demonstrate antidiabetic potential in vitro and in vivo by modulating glucose uptake, insulin sensitivity, and lipid metabolism through pathways such as PI3K/Akt, AMPK, and MAPK/ERK.

This paper reviews preclinical evidence that citrus flavonoids (like nobiletin and diosmin) may help manage blood sugar and lipids. However, it explicitly notes these effects have not yet been verified in human studies. Do not use these supplements to replace prescribed diabetes medication without consulting a physician.

GLP-1 receptor agonists may increase the risk of adverse heart failure outcomes in patients with heart failure and reduced left ventricular ejection fraction (LVEF), despite showing cardiovascular benefits in other populations.

If you have heart failure with reduced ejection fraction, GLP-1RAs might increase your risk of heart failure complications. Always inform your doctor about your full heart history before starting these medications.

Activation of AMP-Activated Protein Kinase (AMPK) inhibits white adipose tissue (WAT) development and promotes the differentiation of brown/beige adipose tissue, thereby increasing energy expenditure and reducing obesity.

While you cannot directly 'take' AMPK, the paper identifies it as the central regulator of energy balance. Strategies that activate AMPK (such as exercise, caloric restriction, or specific pharmacological targets mentioned like BMP-8b) can shift the body's fat storage from energy-storing white fat to energy-burning brown/beige fat. This suggests that interventions focusing on metabolic rate and fat quality are more effective than those focusing solely on fat quantity.

Skeletal muscle aging independently increases the risk of insulin resistance through a convergence of mitochondrial dysfunction, intramyocellular lipid accumulation, chronic inflammation, oxidative stress, and sarcopenia.

As you age, your muscles naturally become less efficient at processing glucose due to cellular stress and inflammation. To counter this, prioritize resistance training and aerobic exercise, which directly improve mitochondrial function and reduce inflammation, thereby preserving your insulin sensitivity despite aging.

Mitochondrial dysfunction in aging skeletal muscle, characterized by reduced oxidative capacity and increased ROS production, directly impairs insulin signaling and promotes insulin resistance.

Supporting mitochondrial health through regular physical activity is crucial for maintaining metabolic flexibility and insulin sensitivity as you age.

Intramyocellular lipid (IMCL) accumulation, specifically the buildup of ceramides and diacylglycerol (DAG), impairs insulin signaling by activating inflammatory pathways and interfering with Akt activity.

Managing body fat and lipid metabolism through diet and exercise helps prevent the accumulation of harmful lipids like ceramides in muscles, protecting insulin sensitivity.