Browse the evidence

Higher fecal abundance of Staphylococcus, Enterobacteriaceae, and Escherichia coli in pregnant women is associated with unfavorable biochemical markers, including higher total cholesterol, higher ferritin, and lower transferrin.

In pregnant women, higher levels of E. coli and Staphylococcus are associated with higher cholesterol and markers of iron dysregulation (high ferritin, low transferrin). This may reflect an inflammatory state associated with obesity. Maintaining a healthy weight and diet may help keep these bacterial populations in check, supporting better metabolic health.

Melatonin acts as a potent antioxidant and anti-apoptotic agent, scavenging free radicals and up-regulating antioxidant enzymes, which may slow the progression of neurodegenerative diseases like Alzheimer's and Parkinson's.

Melatonin's antioxidant properties may help protect brain cells in neurodegenerative diseases, but current human evidence primarily supports its use for improving sleep and circadian rhythms in these patients, not necessarily curing the disease itself.

Melatonin exhibits oncostatic properties by inhibiting tumor growth in estrogen-positive breast cancer and other tumors, potentially by modulating estrogen signaling and fatty acid uptake.

Melatonin may help inhibit tumor growth in estrogen-positive cancers, but it is not a standalone cure. Night shift workers may have higher cancer risk due to suppressed melatonin.

Activation of AMP-activated protein kinase (AMPK) inhibits NF-κB signaling and suppresses chronic inflammation, thereby improving healthspan and extending lifespan.

To leverage AMPK for longevity and inflammation control, prioritize physical exercise and dietary strategies that naturally activate this pathway, such as consuming phytochemicals (e.g., resveratrol, curcumin) and maintaining energy balance. These lifestyle factors are known physiological inducers of AMPK, which in turn suppresses inflammatory signaling linked to aging and metabolic disease.

Administration of the bacterium Akkermansia muciniphila reverses hyperglycemia and reduces body weight in murine models of obesity and type 2 diabetes.

While A. muciniphila shows promise in mice for reversing diabetes and obesity, human results are mixed. Focus on prebiotics like oligofructose, which naturally increase A. muciniphila levels and have shown metabolic benefits in humans, rather than seeking unproven bacterial supplements.

Metformin treatment increases the abundance of Akkermansia muciniphila, contributing to its metabolic benefits.

If you take Metformin for Type 2 Diabetes, it may be helping your gut health by increasing Akkermansia muciniphila. This is one of the mechanisms by which the drug improves metabolic function.

Muscle fiber loss (hypoplasia) and motor unit denervation contribute significantly to age-related muscle atrophy, independent of simple fiber shrinking.

Maintaining muscle isn't just about eating protein; it's about keeping the nerve connections to your muscles intact. Regular resistance exercise is crucial to stimulate these nerves and prevent the actual loss of muscle fibers.

The PPARγ Pro12Ala polymorphism is associated with a modestly increased risk of type 2 diabetes, but its effect on insulin sensitivity is likely mediated through changes in body mass index (BMI) and adiposity rather than direct metabolic effects.

Carrying the Pro12Ala variant slightly increases diabetes risk, mostly by influencing body weight. Maintaining a healthy BMI is the most effective way to mitigate this genetic risk.

Exercise does not reduce mortality or amputation rates in patients with intermittent claudication.

While exercise won't necessarily prevent amputation or death based on current data, it is still recommended because it significantly improves your quality of life and walking ability. Focus on the functional benefits rather than expecting it to cure the underlying arterial disease.

Walkable urban form (density, connectivity) has weaker or non-significant associations with physical activity and BMI for disadvantaged groups compared to advantaged groups.

Urban planners should not assume walkability alone will solve obesity in low-income areas. Interventions must address additional barriers like car ownership, safety, and access to destinations.

Reformulation of products to reduce sugar content in response to taxes can mitigate the financial burden on consumers while achieving public health goals.

Policymakers can design sugar taxes to encourage product reformulation by giving manufacturers time to adjust. This approach can achieve health goals (less sugar) without necessarily imposing the full financial burden on consumers if they choose to reformulate.

TNF-α and IL-6 are pro-inflammatory adipokines that contribute to insulin resistance by interfering with insulin signaling pathways, such as through JNK1-mediated serine phosphorylation of IRS-1.

Chronic low-grade inflammation from fat tissue releases TNF-α and IL-6, which can interfere with how insulin signals cells. While this is a key mechanism in animals, simply blocking these markers in humans has not consistently worked, suggesting a more complex interplay.

Exposure to environmental organotins (specifically tributyltin and triphenyltin) acts as an obesogen by functioning as nanomolar agonist ligands for nuclear receptors RXR and PPAR-gamma, thereby inappropriately driving adipocyte differentiation and increasing fat mass.

While you cannot easily control all environmental exposures, being aware that certain chemicals (like those in some plastics or treated wood) may influence fat storage biology can motivate reducing exposure where possible (e.g., avoiding plastic containers for hot foods, choosing untreated wood). However, this does not replace the fundamental importance of diet and exercise.

Physical activity interventions during pregnancy do not significantly reduce gestational weight gain compared to dietary interventions and do not significantly improve obstetric outcomes like pre-eclampsia or gestational diabetes.

While light physical activity is safe, it is less effective than dietary changes for controlling weight gain and preventing pregnancy complications. Prioritize dietary adjustments with professional guidance for better outcomes.

Low-grade systemic inflammation, driven by hepatic cytokine production, visceral adipose tissue, and gut microbiota metabolites (like TMAO), is a key pathophysiological mechanism linking NAFLD to cardiovascular disease and arrhythmias.

Managing NAFLD involves reducing systemic inflammation through weight loss, dietary changes (reducing saturated fats and processed meats which affect gut microbiota), and exercise. This reduces the inflammatory burden on your blood vessels and heart.

Treatment of NAFLD with specific pharmacological agents, particularly pioglitazone and GLP-1 receptor agonists, can improve liver histology and potentially reduce cardiovascular risk, although large RCTs focusing on CVD outcomes are still needed.

If lifestyle changes are insufficient, medications like pioglitazone or GLP-1 agonists may be considered. They have shown efficacy in improving liver inflammation and fibrosis in clinical trials. Discuss with your doctor if these are appropriate for your cardiovascular risk profile.

Activation of AgRP neurons by UDP (uridine-diphosphate) promotes feeding and weight gain, and elevated circulating uridine levels in obesity may sustain this vicious cycle.

This is a basic science finding; no direct human intervention is currently recommended based on this specific pathway alone.

Activation of SIRT1, SIRT3, and SIRT6 improves glucose metabolism and insulin sensitivity through mechanisms involving AMPK activation, NF-kB inhibition, and regulation of transcription factors like FoxO1 and PGC1α.

While specific SIRT-activating supplements are marketed, the most reliable way to support SIRT activity and metabolic health is through exercise and maintaining metabolic balance. The paper highlights that exercise improves SIRT6-mediated insulin signaling and that SIRT1 activation via AMPK helps glucose tolerance. Focus on consistent physical activity and metabolic health rather than unproven supplements.

SIRTs (particularly SIRT1, SIRT2, SIRT6, and SIRT7) exert anti-inflammatory effects by inhibiting the NF-kB pathway and reducing pro-inflammatory cytokines like TNF-alpha and IL-6.

Chronic inflammation is a risk factor for many diseases. SIRTs help regulate this process. While specific SIRT activators are not yet standard therapy, lifestyle factors that support SIRT activity (like exercise) may help manage inflammatory markers naturally.

Creatine supplementation attenuates noise-induced hearing loss and protects inner/outer hair cells in mice, suggesting a preventive role for noise-exposed individuals.

If you work in a noisy environment or are concerned about hearing loss, creatine supplementation may help protect your inner ear hair cells. While most people take creatine for muscle, it also supports energy production in sensory cells. It is safe and may offer a preventive benefit against noise-induced damage.

High intake of saturated fatty acids (SFA) and low intake of polyunsaturated fatty acids (PUFA) in non-obese, non-diabetic NASH patients are directly associated with reduced insulin sensitivity and impaired postprandial triglyceride clearance.

If you have NASH, focusing solely on weight loss or total calorie counting may not be enough. Prioritize reducing saturated fats (found in red meat, full-fat dairy) and increasing polyunsaturated fats (found in fish, nuts, seeds) and fiber. This shift in fat quality is critical for improving insulin sensitivity and clearing triglycerides, even if your weight remains stable.

Low intake of antioxidant vitamins (C and E) and fiber in NASH patients contributes to oxidative stress and hepatocellular injury, independent of fat intake.

Ensure your diet is rich in fresh fruits and vegetables to boost your intake of Vitamin C and E. These antioxidants help combat the oxidative stress that drives liver inflammation in NASH. Aim for a diet high in fiber and these vitamins, not just low in saturated fat.

Intermittent fasting enhances cognitive function and protects against neurodegenerative diseases by increasing BDNF and ketone levels.

Fasting may help your brain stay sharp as you age. It increases BDNF, a protein that supports brain cells, and ketones, which the brain uses efficiently. This might protect against cognitive decline.

Corporate strategies prioritizing shareholder value maximization over public health actively propagate non-communicable diseases through marketing, lobbying, supply chain expansion, and corporate social responsibility, creating an environment where unhealthy products are more available, desirable, and affordable.

To improve population health, policy must target corporate practices rather than just individual behavior. This involves supporting regulations on marketing, lobbying transparency, and supply chain accountability, particularly in low- and middle-income countries where market penetration is growing.