Browse the evidence

The prevalence of ADHD in obese patients, particularly those with extreme obesity (BMI >= 40), is significantly higher than in the general adult population.

If you have extreme obesity, you are more likely to have ADHD than the general population. Getting evaluated for ADHD might reveal a treatable condition that could help you adhere to your weight loss plan.

A higher dietary fat-to-carbohydrate ratio in African-American children correlates negatively with insulin sensitivity and insulin clearance, and positively with fasting free fatty acids and first-phase insulin secretion.

For families concerned about metabolic health, the balance of macronutrients matters. This study found that a higher ratio of fat to carbohydrates in the diet was associated with lower insulin sensitivity and clearance in children. While this does not prescribe a specific diet, it suggests that monitoring the quality and ratio of fats and carbohydrates may be relevant for metabolic health, especially in African-American children who may have lower baseline insulin clearance.

Folate supplementation reduces the risk of neoplasia and DNA damage in patients with long-standing ulcerative colitis.

If you have long-standing ulcerative colitis, ask your doctor to check your folate levels. Supplementation (often 5mg) may protect against colon cancer and blood clots by fixing DNA damage, especially if you take sulfasalazine.

Exogenous propionic acid reduces obesity-associated inflammation in human visceral adipose tissue by down-regulating pro-inflammatory cytokines (TNF-α, CCL5) and macrophage markers, while simultaneously up-regulating genes for glucose and lipid metabolism (GLUT4, LPL).

Consuming dietary fibers that ferment into propionic acid (found in whole grains, legumes, and resistant starch) may help reduce chronic low-grade inflammation in fat tissue and improve how your body handles glucose and fats. This happens because the byproducts of fiber digestion interact directly with fat cells and immune cells within the fat tissue.

Trans-resveratrol stimulates glucose uptake in skeletal muscle cells by activating AMP-activated protein kinase (AMPK), independent of the PI-3 kinase/Akt pathway.

This research suggests that resveratrol may help muscle cells take up more sugar by activating an energy-sensing enzyme (AMPK). While this is promising for metabolic health, it is based on cell studies, not human trials. Do not rely on this as a substitute for proven diabetes treatments.

Trans-resveratrol improves insulin sensitivity in skeletal muscle cells by potentiating insulin-induced Akt activation via AMPK activation.

Resveratrol may make your body's insulin work better in muscle cells. This happens when you have insulin present, suggesting it might help manage blood sugar more effectively if you have some insulin production or are using insulin therapy, but this is only proven in cell cultures.

Sugar-sweetened beverage taxes are economically justified if they correct for externalities (healthcare costs) and internalities (self-control issues/misinformation), potentially exceeding their costs even if regressive in direct financial impact.

For policymakers: Implement SSB taxes to correct for health externalities and internalities, not just to raise revenue. Target taxes on grams of sugar, not just volume, and consider revenue recycling to benefit low-income communities. The net social benefit likely exceeds the costs.

Higher serum levels of indolepropionic acid (IPA), a gut microbiota metabolite derived from dietary tryptophan, are associated with a lower incidence of type 2 diabetes and reduced low-grade inflammation in high-risk individuals.

While you cannot directly supplement IPA effectively based on this study, the findings suggest that a diet high in fiber supports gut bacteria that produce IPA. This metabolic pathway is linked to lower inflammation and a reduced risk of type 2 diabetes. Prioritize fiber-rich whole foods to support this natural protective mechanism.

ETC-1002 (ESP55016) reduces circulating proatherogenic lipoproteins, hepatic lipids, and body weight in hyperlipidemic hamsters and improves glycemic control in diet-induced obese mice through dual inhibition of ATP-citrate lyase and activation of AMP-activated protein kinase.

ETC-1002 is an investigational small molecule designed to treat dyslipidemia and metabolic syndrome. In animal models, it lowered LDL cholesterol, reduced body weight, and improved blood sugar control by simultaneously activating AMPK (energy sensor) and inhibiting ATP-citrate lyase (lipid synthesis enzyme). It is not currently available for general use.

Inhibiting adipogenesis (the differentiation of preadipocytes into mature adipocytes) via modulation of transcription factors (C/EBP, PPARγ) and signaling pathways (Wnt, AMPK) is a viable therapeutic strategy for preventing or treating obesity.

This paper does not provide a direct lifestyle protocol but identifies the biological target: stopping the creation of new fat cells. For a layperson, this implies that interventions aiming to reduce obesity should focus on mechanisms that inhibit fat cell differentiation, such as those found in certain natural products or drugs targeting PPARγ or AMPK pathways, rather than just calorie restriction alone.

Natural products and conventional medications (Statins, Fibrates, Niacin) can inhibit or modulate adipogenesis through specific molecular pathways, offering potential anti-obesity effects.

Current medications like Statins and Fibrates, and various natural products, affect fat cell biology. Statins decrease lipid accumulation and increase small adipocytes. Fibrates increase fatty acid oxidation. Niacin stimulates adipogenesis markers. These mechanisms suggest that existing drugs have off-target effects on fat biology that could be leveraged.

Elevated circulating branched-chain amino acid (BCAA) levels are strongly associated with insulin resistance and type 2 diabetes, potentially acting as mediators through mTORC1 activation and accumulation of toxic metabolites like acylcarnitines and ceramides.

If you have insulin resistance or type 2 diabetes, high levels of branched-chain amino acids (found in protein) in your blood are linked to worse metabolic health. While protein is essential, simply consuming more BCAAs may not help and could potentially worsen insulin resistance in susceptible individuals. Focus on overall metabolic health and consult a provider before high-dose BCAA supplementation.

Bariatric surgery, specifically Roux-en-Y gastric bypass, reduces BCAA levels and improves insulin sensitivity, an effect not seen with weight loss alone via gastric banding.

If you undergo Roux-en-Y gastric bypass, your BCAA levels are likely to drop, which helps improve insulin sensitivity. This benefit is specific to the type of surgery and not just weight loss.

More green space in a neighborhood tends to be associated with a lower risk and prevalence of type 2 diabetes mellitus (T2DM), although the evidence is not as strong as for walkability.

While the evidence is not conclusive, living in an area with more green space may be associated with a lower risk of type 2 diabetes. This could be due to increased physical activity or stress reduction.

Chronic dietary administration of menthol activates TRPM8 channels in brown adipose tissue, triggering a PKA-dependent upregulation of UCP1 that increases thermogenesis and prevents diet-induced obesity and glucose intolerance in mice.

This research suggests that chronic consumption of menthol (specifically 0.5% of diet in mice) can activate cold-sensing channels in fat tissue to burn calories and prevent obesity. While promising in mice, translating this to humans requires confirming that adult humans have sufficient TRPM8 expression in brown fat and that dietary menthol doses are safe and tolerable long-term. It is not a quick fix but a potential metabolic modulator.

Activation of the Constitutive Androstane Receptor (CAR) using the agonist TCPOBOP prevents and reverses obesity and improves insulin sensitivity in high-fat diet-induced and genetic mouse models of type 2 diabetes.

This research identifies the Constitutive Androstane Receptor (CAR) as a potential target for treating obesity and type 2 diabetes. While the specific drug used (TCPOBOP) is experimental, the findings suggest that activating CAR through approved drugs (like phenobarbital) or nutraceuticals might help manage metabolic health. Current evidence is limited to animal models, so human application requires further clinical validation.

The rapid global shift from water/milk to sugar-sweetened beverages and ultra-processed foods has created an energy imbalance that human biology, evolved for scarcity and water, cannot compensate for.

Understand that your environment is designed to make you overeat. The rapid availability of cheap, calorie-dense, liquid foods exploits an evolutionary biology built for scarcity. This is not a personal failure; it is a systemic issue. Focus on changing your immediate environment (e.g., removing SSBs) to align with your biology.

Calcium deficiency is the most widespread micronutrient deficiency in Africa (affecting 54% of the population), primarily driven by low intake of calcium-rich animal products and high phytate interference.

Calcium deficiency is the most common micronutrient issue in Africa, affecting 54% of people. This is largely due to diets low in calcium-rich animal products and high in phytates. To address this, you need to diversify your diet to include more calcium-rich foods or consider direct fortification.

Iron deficiency risk in Africa is estimated at only 5% based on standard bioavailability assumptions, but this estimate rises to 43% if very low bioavailability (5%) scenarios consistent with high-phytate, low-animal protein diets are considered.

Standard iron deficiency estimates in Africa (5%) may be misleading. If your diet is high in phytates (cereals) and low in animal protein, your actual risk of iron deficiency could be as high as 43%. Consider strategies to improve iron bioavailability.

Adherence to a Western diet (high in refined carbohydrates, simple sugars, and saturated fats) causes intestinal dysbiosis, which triggers oxidative stress and inflammatory cascades leading to Inflammatory Bowel Diseases (IBD).

To protect your gut health and reduce IBD risk, minimize intake of refined sugars, simple carbs, and saturated fats. These components drive dysbiosis and inflammation. Focus on whole foods to support a healthy microbiome.

Both aerobic and resistance training significantly increase plasma fibrinogen levels in middle-aged, android-obese men, which is a paradoxical increase in a known cardiovascular risk factor.

Be aware that short-term exercise training might temporarily increase fibrinogen, a blood clotting factor. This does not negate the benefits of exercise but suggests monitoring may be needed in high-risk individuals.

Thyroid hormone analogs (thyromimetics) targeting specific thyroid hormone receptors (TRs) have been proposed to treat obesity and metabolic diseases by increasing energy expenditure without the adverse systemic effects of supraphysiologic thyroid hormone doses.

Thyroid hormone supplementation is not a safe or approved treatment for obesity due to adverse side effects. Research into targeted thyroid hormone analogs (thyromimetics) is ongoing, but no such therapies have been approved by the FDA. Lifestyle interventions remain the standard of care.

Geographic origin is a stronger determinant of gut microbiota composition than BMI or gender, and the previously hypothesized increase in Firmicutes with obesity is not universal across all populations.

Do not assume that microbiota-based interventions (like probiotics or specific fiber targets) will work identically across all ethnic or geographic groups. Your geographic origin and diet history likely shape your gut bacteria more than your weight does. Personalized approaches must account for baseline microbial differences between populations.

Specific fiber-degrading bacteria (Akkermansia, Dialister, Oscillospira, Ruminococcaceae, Clostridiales) decrease in abundance with increasing BMI in Colombian and American populations.

If you are trying to improve your gut health through diet, focus on fiber intake. This study suggests that higher BMI is associated with lower levels of key fiber-degrading bacteria. Restoring these bacteria may require dietary changes that support their growth, rather than just probiotic supplements.