Browse the evidence

Caloric restriction extends lifespan and promotes longevity by inducing dramatic changes in mitochondrial protein acetylation, thereby enhancing mitochondrial adaptation to reduced caloric intake.

Caloric restriction is a proven method to extend lifespan in various species by altering how mitochondria function. This happens through changes in protein acetylation, which helps cells adapt to lower energy availability. While strict restriction is hard to maintain, the underlying mechanism suggests that managing energy intake to avoid overfeeding may support healthy aging processes.

Metformin reduces hepatocyte triglyceride accumulation and plasma triglycerides in NAFLD patients by inhibiting ApoA5 synthesis via the AMPK/LXRα signaling pathway.

For those with fatty liver, metformin may help reduce liver fat by blocking specific proteins (ApoA5) that store fat in the liver. However, it is not currently a recommended or proven standalone treatment for NAFLD in clinical guidelines, so lifestyle changes remain the primary intervention.

Metformin protects against cardiac ischemia-reperfusion injury and improves heart failure outcomes post-MI by activating AMPK, which promotes glycolysis and prevents mitochondrial permeability transition pore (mPTP) opening.

If you have had a heart attack, metformin (even in low doses) may help protect your heart muscle from further damage by improving energy use in heart cells. This benefit extends to non-diabetic heart failure patients as well, improving heart pumping function.

A higher Oxidative Balance Score (OBS), reflecting a predominance of antioxidant exposures over prooxidants in diet and lifestyle, is positively associated with longer leukocyte telomere length (LTL) in adult females.

For women, maintaining a diet and lifestyle that favors antioxidants over prooxidants is associated with longer telomeres, a marker of cellular aging. This involves consuming foods rich in antioxidants (like fruits, vegetables, whole grains) while minimizing prooxidant stressors like smoking, excessive alcohol, and high processed meat intake. While this study is observational, it suggests that holistic dietary patterns matter more than isolated supplements for preserving cellular longevity.

Aberrant protein posttranslational modifications (PTMs) are central drivers of metabolic diseases including diabetes, obesity, and atherosclerosis, and targeting these modifications offers a viable therapeutic strategy.

Metabolic diseases are driven by complex molecular switches (PTMs) that regulate how your body processes energy. While lifestyle changes are the first line of defense, pharmaceutical interventions targeting these specific molecular pathways (like kinase inhibitors) are increasingly available and effective for managing conditions like diabetes and fatty liver disease when lifestyle changes are insufficient.

Exogenous administration of spermidine or spermine improves glucose homeostasis, insulin sensitivity, and reduces adiposity in diet-induced obesity mouse models.

Current research indicates that spermidine and spermine supplementation may improve metabolic health in obese individuals, particularly by enhancing insulin sensitivity and reducing fat accumulation. However, most evidence comes from animal models. While human trials show increased blood levels with supplementation, direct metabolic benefits in humans are not yet fully established. Consult a healthcare provider before starting supplementation, especially if you have existing metabolic conditions.

Agmatine, a polyamine-related compound produced by gut bacteria and plants, reduces body weight gain, fat depots, and atherosclerotic lesions in high-fat diet-fed animal models.

Agmatine, found in plants and produced by gut bacteria, shows promise in animal studies for reducing fat accumulation and atherosclerosis in obese models. However, specific dosing and human efficacy are not established in this review. It is not currently a standard clinical recommendation for weight loss.

Glutamine supplementation promotes M2 macrophage polarization via the glutamine-UDP-GlcNAc pathway and alpha-ketoglutarate production, which may help prevent obesity- or diabetes-associated pathology.

While glutamine is known to support immune health, this review highlights its specific role in shifting immune cells away from inflammation in obesity. Current research is mostly in mice, so humans should consult a doctor before using glutamine specifically for metabolic health, as the direct benefits in people are not yet fully proven.

Succinate accumulation, derived from glutamine-dependent anerplerosis, promotes M1 macrophage polarization and stabilizes HIF-1α, contributing to inflammation in obesity.

High levels of succinate are linked to inflammation in obesity. While you cannot directly 'take' succinate to fix this, understanding that it drives inflammation highlights why managing metabolic health is crucial. No specific succinate-based therapy is currently recommended for humans.

Engagement with 'fitspiration' social media content is associated with high levels of psychological distress, disordered eating risk, and compulsive exercise behaviors, despite users perceiving positive motivational benefits.

If you follow fitness influencers, be aware that while it may motivate you to exercise, it is also strongly linked to psychological distress and disordered eating patterns. Prioritize content from qualified experts or relatable 'everyday' people who discuss challenges honestly, rather than those promoting unattainable aesthetic ideals. Monitor your mental health and eating habits closely if you feel pressure to achieve a specific look.

Infant formula milk contains significantly higher levels of Advanced Glycation End Products (AGEs), specifically CML, compared to breast milk, potentially predisposing infants to inflammation and metabolic issues.

If using infant formula, be aware that processing creates AGEs. Follow preparation instructions carefully to avoid excessive heating. If breastfeeding is possible, it provides lower AGE exposure. For formula-fed infants, this is a known physiological factor contributing to early inflammatory load.

Gut microbiota-derived lipopolysaccharides (LPS) and peptidoglycan (PGN) promote NAFLD progression by activating hepatic Toll-like receptors (TLR4, TLR2, NOD1/2), triggering inflammatory cytokine release and steatosis.

Your liver health is heavily influenced by what lives in your gut. An unhealthy diet can disrupt gut bacteria, allowing harmful bacterial parts (like LPS) to leak into your bloodstream and inflame your liver. Prioritizing a diet that supports a healthy gut microbiome (e.g., high fiber) may help reduce this inflammatory load on the liver.

Gut microbiota-derived metabolites, specifically Short-Chain Fatty Acids (SCFAs) like butyrate, acetate, and propionate, ameliorate NAFLD by inhibiting histone deacetylases (HDACs) and activating G-protein coupled receptors (GPR41, GPR43).

Eating soluble dietary fibers feeds gut bacteria to produce Short-Chain Fatty Acids (SCFAs) like butyrate. These metabolites help reduce liver inflammation and fat accumulation by regulating gene expression and immune responses. Focus on fiber-rich foods rather than isolated SCFA supplements.

Gut microbiota-derived Trimethylamine-N-oxide (TMAO) and secondary bile acids modulate NAFLD progression through regulation of bile acid metabolism, insulin resistance, and hepatic inflammation.

The conversion of dietary nutrients (choline, carnitine) by gut bacteria into TMA, and subsequently TMAO in the liver, influences bile acid metabolism and insulin resistance. Managing dietary intake of these precursors and supporting healthy bile acid signaling (via secondary bile acids) may help manage NAFLD.

Gut microbiota dysbiosis, characterized by elevated pathobionts (e.g., Proteobacteria, Enterobacteriaceae) and depleted beneficial bacteria (e.g., Faecalibacterium, Bifidobacterium), is associated with gestational diabetes mellitus (GDM) and postpartum glucose intolerance, potentially serving as a predictive biomarker for type 2 diabetes.

If you have or had GDM, your gut bacteria may look different from those without GDM, resembling the profile of type 2 diabetes. While this doesn't mean you are doomed, it suggests that maintaining a healthy gut through diet and lifestyle might be a key strategy for preventing type 2 diabetes after pregnancy. Consult your doctor about monitoring your metabolic health.

Gut microbiota dysbiosis in GDM involves elevated lipopolysaccharide (LPS) production and translocation, leading to low-grade inflammation and insulin resistance.

High levels of certain gut bacteria (pathobionts) can lead to inflammation and insulin resistance. While this is a key mechanism in GDM, it is not yet clear if fixing the microbiota alone will cure GDM. Focus on overall metabolic health.

The effects of Baduanjin Qigong on leg power, cardiopulmonary endurance, and pulmonary function remain unclear due to a small number of studies.

Do not rely on Baduanjin Qigong as your primary method for improving leg power, cardiovascular endurance, or lung capacity. While it may offer minor benefits, there is not enough evidence to confirm it effectively targets these specific physiological systems. For these goals, consider more targeted aerobic or resistance training.

Thyroid dysfunction (both hypo- and hyperthyroidism) is bidirectionally associated with metabolic syndrome components, where thyroid hormones regulate metabolic rate, adiposity, and glucose/lipid metabolism, while adiposity and insulin resistance reciprocally affect thyroid function via leptin and inflammatory cytokines.

If you have metabolic syndrome or obesity, your thyroid health is likely affected, and vice versa. High TSH is associated with higher risk of metabolic syndrome components like high blood pressure, triglycerides, and insulin resistance. Conversely, losing weight and improving insulin sensitivity can improve thyroid function markers. Do not assume treating thyroid levels alone will resolve metabolic issues; address adiposity and insulin resistance concurrently.

Dysregulation of specific microRNAs (miRNAs) in adipose tissue, pancreas, liver, and muscle contributes to the pathogenesis of obesity and related metabolic diseases by altering gene expression involved in energy balance, insulin signaling, and inflammation.

Obesity involves complex biological regulation beyond just calories in vs. calories out. Specific microRNAs in your fat, liver, and muscle cells can become dysregulated, contributing to insulin resistance and inflammation. While lifestyle changes remain foundational, understanding this biological layer explains why obesity can be stubborn and why future treatments may target these specific molecular pathways.

Circulating microRNAs (miRNAs) found in plasma and other body fluids can serve as biomarkers for obesity and metabolic diseases, and may act as endocrine signaling molecules mediating inter-organ communication.

Blood tests may soon be able to detect specific microRNAs that indicate metabolic stress or obesity-related risks before clinical symptoms appear. This could lead to earlier interventions. Additionally, fat tissue may release these molecules to communicate with other organs, influencing metabolism system-wide.

Specific microRNAs (e.g., miR-143, miR-145, miR-27a, miR-130a) regulate adipogenesis (fat cell formation) and insulin sensitivity, with some promoting and others inhibiting fat cell differentiation and glucose homeostasis.

The formation of new fat cells is tightly controlled by specific microRNAs. Some miRNAs encourage fat storage (like miR-143), while others prevent it (like miR-27a). This biological regulation explains why fat distribution and insulin sensitivity vary significantly between individuals.

Obesity is associated with gut dysbiosis characterized by decreased microbial diversity and an increased Firmicutes/Bacteroidetes ratio, which contributes to obesity through disrupted energy homeostasis, lipid synthesis, and chronic inflammation.

Your gut bacteria play a significant role in how your body handles energy and stores fat. While diet and exercise are crucial, the types of bacteria in your gut can influence your risk of obesity through mechanisms like energy extraction and inflammation. Maintaining gut health through a diverse diet may support metabolic health, but it is not a standalone cure for obesity.

Altered gut microbiota in obesity increases digestible energy uptake from food through enhanced expression of nutrient transporters and fermentation enzymes, leading to increased caloric absorption.

Your gut bacteria can extract more calories from the same amount of food if they are altered. This is one reason why two people might eat the same diet but have different weights. Focusing on gut health through fiber and diverse foods might help optimize energy extraction.

Gut microbiota alterations in obesity contribute to chronic low-grade inflammation through increased lipopolysaccharide (LPS) translocation, which triggers immune responses and insulin resistance.

High levels of bacterial toxins (LPS) can leak into your bloodstream if your gut barrier is compromised, causing inflammation and insulin resistance. A diet rich in fiber and fermented foods may support gut barrier integrity.