Browse the evidence

uPAR-targeting CAR T cells effectively treat metabolic syndrome induced by a high-fat diet in young mice, improving body weight, glucose tolerance, and insulin sensitivity.

In a mouse model of obesity, clearing senescent cells via CAR T therapy improved metabolic health and reduced body weight, even when the mice continued to eat a high-fat diet.

High prevalence of overweight (49.3%), hypertension (30.9%), and dyslipidaemia (44.1%) exists in French adults, with men showing higher rates of hypertension and dyslipidaemia while women show higher rates of central obesity and low vitamin D.

Nearly half of adults are overweight, and a third have high blood pressure. Men should prioritize blood pressure and lipid management, while women should focus on central obesity (waist circumference) and vitamin D status, as these are the gender-specific high-risk areas identified.

Creatine ethyl ester (CEE) is less stable than creatine monohydrate in acidic environments and does not promote greater muscle creatine gains or training adaptations compared to CM.

Avoid creatine ethyl ester. It breaks down in your stomach and doesn't work better than regular creatine monohydrate.

Mitochondria from insulin-resistant muscle maintain higher thermodynamic driving forces (more negative static head ATP free energy) at low metabolic flux, which predicts higher ROS production.

At rest, your mitochondria are holding a stronger 'charge' (higher ATP free energy) than lean individuals. This high-energy state drives more electron leakage (ROS), which may contribute to insulin resistance.

Deficiency in all three beta-adrenergic receptors ($\beta$-less mice) causes a complete failure of diet-induced thermogenesis, resulting in extreme obesity when consuming a high-calorie diet, despite normal food intake.

This research highlights that your body's ability to burn calories (thermogenesis) in response to eating is a critical biological defense against weight gain. If this system is impaired (genetically or otherwise), you may gain weight easily even if you don't overeat. While this specific genetic defect is rare in humans, it underscores that weight management involves more than just calories in vs. calories out; it involves your body's metabolic response to food.

UCP1 (Uncoupling Protein 1) is essential for cold-induced thermogenesis but is not the primary mediator of diet-induced thermogenesis in resisting obesity, as UCP1 knockout mice remain resistant to diet-induced obesity.

While UCP1 is crucial for staying warm in the cold, it doesn't appear to be the main reason your body burns off excess calories from food. This suggests that weight management involves a more complex system than just activating one specific protein in brown fat.

Small, persistent positive energy balances (approx. 2 kcal/day) are sufficient to drive population-level obesity prevalence increases, primarily through reduced energy expenditure rather than increased intake.

Focus on increasing daily movement and reducing sedentary time. Even small improvements in activity can offset the subtle energy imbalances that drive weight gain, especially if your diet is already stable or improving.

Loss of the lncRNA 116HG (found in the Prader-Willi syndrome locus) causes increased energy expenditure and a shift toward lipid oxidation (lower RER) during light/active hours in mice, independent of changes in food intake or physical activity.

This research highlights that energy expenditure is biologically regulated by specific genes (like 116HG) and circadian rhythms, not just by how much you eat or move. While this is a mouse model of a genetic disorder, it suggests that metabolic rate and substrate preference (fat vs. carbs) are active biological processes that can be dysregulated, independent of behavior.

Obese subjects exhibit a significantly reduced thermic effect of glucose (approx. 5.2% increase in metabolic rate) compared to lean controls (approx. 13.0% increase) following a 50g glucose load, suggesting inefficient dietary-induced thermogenesis contributes to low energy expenditure in obesity.

This research suggests that obese individuals may burn fewer calories from food (specifically glucose) than lean individuals due to a blunted thermic effect. This isn't about willpower; it's a physiological difference in how energy is expended. Understanding this metabolic inefficiency can help shift the focus from just 'eating less' to strategies that might address metabolic rate and energy expenditure.

Brown adipose tissue (BAT) is present and metabolically active in adult humans, where it contributes to energy expenditure and thermogenesis, challenging the prior belief that it is nonexistent or nonfunctional in adults.

You likely have active brown fat, even as an adult. It helps burn calories and regulate temperature. While you can't simply 'switch it on' with a pill without side effects, understanding its existence means your body has a built-in mechanism for energy expenditure that can be influenced by factors like cold exposure and diet.

Restoration of mitochondrial ultrastructure via SS-31 peptide treatment rescues the regenerative defects caused by α-Klotho deficiency.

Targeting mitochondrial health with peptides like SS-31 may help overcome regeneration deficits in individuals with low α-Klotho levels.

Accumulation of mtDNA mutations in post-mitotic tissues (like muscle and brain) leads to tissue dysfunction via clonal expansion and mosaicity, rather than global oxidative damage levels.

Understand that aging in specific tissues (like muscle loss) is driven by localized cell failures, not just general 'oxidative stress'. This complexity explains why simple antioxidant interventions often fail to prevent age-related tissue decline.

Higher Body Mass Index (BMI) is directly associated with increased serum levels of biomarkers for DNA damage and telomere dysfunction, independent of chronological age.

Higher body weight (BMI) is associated with higher levels of DNA damage and telomere dysfunction markers in your blood, regardless of your age. Maintaining a healthy weight may help reduce these biological markers of aging.

Genetic deficiency or knockdown of CIDE family proteins (Cidea, Cideb, Fsp27) induces a lean phenotype, increases energy expenditure, and confers resistance to diet-induced obesity and insulin resistance.

This research suggests that targeting CIDE proteins (specifically Fsp27, Cideb, or Cidea) could be a viable therapeutic strategy for treating obesity and type 2 diabetes. While you cannot directly 'knock out' these genes, understanding their role highlights that inhibiting lipid droplet formation and promoting fatty acid oxidation are key to metabolic health. Current research points to these proteins as potential molecular targets for drug development.

Fsp27 (Cidec) deficiency in white adipose tissue induces a 'browning' effect, characterized by increased mitochondrial activity, smaller lipid droplets, and improved insulin sensitivity.

Fsp27 normally prevents white fat from acting like brown fat. When Fsp27 is absent, white fat starts behaving like brown fat (browning), increasing calorie burning and improving insulin sensitivity. This suggests that inhibiting Fsp27 could be a way to turn white fat into a metabolically active tissue that burns calories.

Shifting global production to match the Harvard Healthy Eating Plate (HHEP) recommendations would save 51 million hectares of arable land compared to current production levels.

Producing food according to nutritional guidelines (more fruits/veg, less grain/sugar) is more land-efficient than current practices. This shift saves 51 million hectares of arable land, preserving habitats and ecosystem services.

Adopting the HHEP diet increases total greenhouse gas (GHG) emissions by 49% compared to the current global diet, primarily due to increased animal-source protein consumption.

A diet that meets nutritional guidelines (HHEP) may increase GHG emissions if it relies on animal protein. To reduce emissions, combine healthy eating with plant-based proteins (legumes, seeds, nuts), which have a much lower GHG footprint.

Acute ingestion of capsinoids (1–12 mg) does not significantly increase resting metabolic rate or fat oxidation in healthy human subjects within a 2-hour window.

Taking capsinoids (1-12 mg) will not increase your calorie burn or fat oxidation in the short term (2 hours). Do not rely on this supplement for immediate weight loss or metabolic boosting effects.

Intentional, medically supervised weight loss in overweight patients with type 2 diabetes does not reduce all-cause mortality or cardiovascular morbidity and may be associated with increased mortality in obese subgroups (BMI ≥30).

For overweight patients with type 2 diabetes, aiming for significant weight loss under medical supervision does not guarantee a longer life and may not reduce heart disease risk. Focus on stable management of blood sugar, blood pressure, and lipids rather than prioritizing weight loss as the primary goal for longevity.

Reducing global obesity prevalence to 2019 levels could save an estimated US$2.2 trillion annually by 2060 through healthcare and productivity-related cost savings.

Addressing obesity at a population level saves massive amounts of money globally. Public health policies that reduce obesity prevalence have a high economic return on investment.

Feeding rats a cafeteria diet with low protein content (approx 7%) significantly increases energy expenditure and brown adipose tissue (BAT) activity compared to normal or high protein cafeteria diets, primarily through sympathetic activation of non-shivering thermogenesis.

This research suggests that when consuming highly palatable, energy-dense foods, a very low protein intake might trigger a specific metabolic defense mechanism (increased brown fat activity) that burns off excess calories. However, this comes at the cost of stunted growth and reduced fat-free mass in rats. For humans, this highlights that diet composition (specifically protein levels) significantly influences how the body handles excess energy, but it does not recommend low protein diets for general use due to the negative impact on lean mass.

In low-latitude or semiarid snowpacks, evaposublimation accounts for 24-33% of total annual ablation, making it a dominant driver of hydrological balance.

This paper is about hydrology, not human fitness. However, the principle holds: in specific environments (like high altitude or dry climates), energy balance is driven by factors beyond simple heat transfer (melting). For fitness, this implies that environmental factors (humidity, wind, radiation) significantly impact energy expenditure and balance, not just caloric intake and exercise output.

Bariatric surgery in older adults (≥65 years) is associated with significantly higher rates of in-hospital mortality and complications compared to younger adults, and should be reserved for refractory cases.

Surgery is the most effective weight loss method but carries higher risks for those over 65. It should only be considered if you have severe obesity and have failed all other treatments, after a thorough risk-benefit discussion with specialists.

Cardiovascular disease (CVD) is the leading cause of death in China, accounting for 36% of deaths.

Healthcare strategies in China should prioritize addressing CVD to reduce mortality.