Browse the evidence

Obesity negatively impacts the response to therapy in Rheumatoid Arthritis (RA), reducing the likelihood of achieving sustained remission with both conventional and biologic agents.

If you have Rheumatoid Arthritis and are obese, your current medications (including biologics) may be less effective at putting your disease into remission. This is due to biological factors like adipokines and inflammation. Discussing weight management alongside your RA treatment plan may improve your chances of achieving remission.

Mid-life obesity is associated with an increased risk of dementia and Alzheimer's disease later in life, whereas late-life obesity may show a paradoxical protective effect or no increased risk.

Maintaining a healthy weight in mid-life is crucial for reducing your risk of dementia and Alzheimer's disease later in life. While the relationship between weight and dementia in old age is complex, keeping your weight in a healthy range during your 40s and 50s is a proven way to protect your brain health.

A ketogenic diet or elevated beta-hydroxybutyrate (BHB) levels inhibit the NLRP3 inflammasome in neutrophils, thereby preventing joint swelling and inflammation in gout models without compromising immune defense against bacterial infection.

For individuals prone to gout, maintaining elevated levels of beta-hydroxybutyrate (BHB) may help prevent painful joint flares. This can be achieved through a ketogenic diet or potentially via ketone ester supplements, which inhibit the inflammatory NLRP3 complex in immune cells. This approach does not appear to compromise the body's ability to fight bacterial infections.

Soluble dietary fiber (SDF) from whole grains, specifically beta-glucan and arabinoxylan, lowers cardiovascular disease risk by forming viscous gels that reduce bile acid reabsorption and cholesterol synthesis.

Focus on whole grains known for high soluble fiber content, such as oats and barley, to help manage cholesterol levels. Beta-glucan in these grains forms a gel in the gut that helps lower cholesterol.

Obesity is a primary multifactorial disease (adiposopathy) driven by pathological adipose tissue dysfunction, not merely excess weight, and requires diagnosis based on body fat percentage and metabolic risk rather than BMI alone.

Stop using BMI as your sole health metric. If you have a normal BMI but feel unwell or have metabolic issues, ask for a body composition analysis (like DXA or BIA) to check your actual body fat percentage and visceral fat. Recognizing obesity as a disease (adiposopathy) helps access proper medical care rather than just diet advice.

Normal Weight Obesity (NWO) is a distinct phenotype characterized by normal BMI but high body fat percentage (>30% women, >25% men) and low lean mass, carrying significant cardiovascular and metabolic risk.

If you are normal weight, don't assume you are healthy. Get a body composition test. If you have high body fat and low muscle (NWO), you are at risk for diabetes and heart disease. Focus on building muscle and reducing visceral fat through resistance training and protein intake.

Oral contraceptives (OCs) that maintain stable, moderate estrogen levels reduce the cyclic fluctuation in knee laxity and are associated with a lower risk of ACL injury compared to women with natural menstrual cycles.

If you are a female athlete concerned about ACL injuries, using oral contraceptives may help stabilize your ligament laxity throughout the month, potentially lowering your risk of injury compared to having natural hormonal cycles. Consult your doctor to see if this is appropriate for you.

Estrogen replacement therapy (ERT) in postmenopausal women improves muscle mass, strength, and power, and enhances the sensitivity of muscle to anabolic stimuli from exercise.

If you are postmenopausal and struggling to maintain muscle strength, talk to your doctor about Estrogen Replacement Therapy (ERT). It can help your muscles respond better to exercise, leading to greater gains in strength and power than exercise alone.

Exposure to artificial light at night (ALAN), particularly blue-shifted light from LEDs and screens, disrupts circadian rhythms and is associated with increased risk of mood disorders, including depression and anxiety, through direct neural pathways and indirect hormonal/sleep disruptions.

To protect your mood and mental health, minimize exposure to bright, blue-rich light (LEDs, screens) in the hours before bed. Use dim, warm-colored lights (red/orange) if you must use electronics, and consider blue-light-blocking glasses if you work night shifts. Prioritize darkness during sleep to support natural melatonin production and circadian alignment.

Oral supplementation with propionic acid (500 mg twice daily for 8 weeks) significantly reduces LDL and total cholesterol levels in hypercholesterolemic humans by modulating intestinal cholesterol absorption via an immune-dependent pathway involving regulatory T cells and IL-10.

If you have high LDL, adding 500mg of propionic acid twice daily for two months can significantly lower your bad cholesterol. This works by boosting specific immune cells in your gut that tell your intestines to absorb less cholesterol. It is a targeted, immune-based approach distinct from standard statins.

Circadian misalignment, such as that experienced during shift work or social jet lag, causally impairs glucose tolerance and insulin sensitivity, thereby increasing the risk of type 2 diabetes.

If you work shifts or have irregular sleep schedules, prioritize managing light exposure and meal timing. Try to eat during your 'biological day' (when you are naturally alert) rather than your 'biological night'. If you must eat at night, be aware that glucose tolerance is impaired. On days off, try to keep your sleep/wake times closer to your workdays to minimize social jet lag.

Obesity is an independent risk factor for multiple cancers, with endometrial, post-menopausal breast, and colorectal cancers accounting for over 60% of cancers attributed to obesity.

Maintaining a healthy weight is one of the most effective ways to reduce your risk of developing endometrial, breast, and colorectal cancers. Focus on sustainable lifestyle changes rather than quick fixes, as even modest weight loss can significantly lower risk.

Higher body mass index (BMI) is linearly associated with an increased risk of incident type 2 diabetes, with the magnitude of this risk being significantly stronger in younger adults (ages 20-40) compared to older adults.

If you are under 40, your body is extremely sensitive to weight gain. Every kilogram you gain now carries a much higher risk of triggering diabetes than it would if you gained that same weight at age 60. Prioritize weight stability and metabolic health in your 20s and 30s, as the protective effect of youth is easily overridden by adiposity.

Insulin resistance (IR) acts as a primary driver of cardiovascular disease (CVD) by promoting atherosclerosis through mechanisms including endothelial dysfunction, chronic low-grade inflammation, and dyslipidemia, independent of diabetes status.

Prioritize metabolic health markers like waist circumference and fasting insulin over just weight or cholesterol. Regular exercise and dietary modifications are the primary tools to improve insulin sensitivity and reduce cardiovascular risk, even if you are not diabetic.

The glucose-lowering benefits of physical activity breaks are greater in individuals with higher body mass index (BMI).

If you have a higher BMI, making small physical activity breaks during your workday might be especially effective at keeping your blood sugar levels stable after meals compared to those with a lower BMI.

Menopause itself increases the risk of type 2 diabetes due to estrogen deficiency, leading to increased visceral fat, decreased energy expenditure, and impaired insulin secretion, which are partially reversed by MHT.

Menopause increases diabetes risk due to loss of estrogen, which affects fat distribution and insulin sensitivity. This risk is higher if menopause occurs early or surgically. MHT can help mitigate these risks if used for symptom management, but lifestyle factors remain critical.

Metabolic surgery (specifically RYGB and SG) is an effective treatment for obesity-related hypertension, achieving hypertension remission in approximately 50-56% of patients and reducing medication burden significantly compared to medical therapy alone.

If you have obesity and high blood pressure that isn't controlled by lifestyle changes or medications, metabolic surgery (like gastric bypass or sleeve gastrectomy) is a highly effective option. It can lead to the remission of hypertension in more than half of patients, often reducing or eliminating the need for blood pressure medications. While lifestyle changes are the first step, they often fail long-term; surgery offers a durable solution for severe cases.

Younger men (≤44 years) and older women (≥65 years) represent the highest-risk subgroups for uncontrolled diabetes, exhibiting significantly worse glycemic and lipid profiles compared to other demographic groups.

If you are a man under 45 with diabetes, your risk for uncontrolled blood sugar and lipids is significantly higher than older patients. Do not assume youth protects you from complications; prioritize strict metabolic control to prevent long-term disability.

Long-term physical activity (specifically aerobic exercise) promotes neuroplasticity and cognitive health in aging adults by upregulating Brain-Derived Neurotrophic Factor (BDNF), increasing hippocampal volume, and reducing neuroinflammation.

Engage in regular moderate aerobic exercise (e.g., brisk walking, cycling) at least 3 times per week for 12 months or more. This specific protocol has been shown to increase hippocampal volume and reverse 1-2 years of age-related brain loss, directly supporting memory and executive function.

The number of metabolic syndrome traits (0-5) is positively associated with the incidence of major cardiovascular events, with each additional trait increasing the risk by 22%.

Your cardiovascular risk increases by 22% for every metabolic syndrome trait you have (e.g., high blood pressure, high triglycerides, low HDL, high waist circumference, high blood sugar). Reducing the number of these traits directly lowers your risk of heart attack and stroke.

Colonic SCFA mixtures increase plasma Peptide YY (PYY) concentrations, a satiety-stimulating hormone, in both fasting and postprandial states.

Eating fiber-rich foods stimulates the release of Peptide YY (PYY), a hormone that signals fullness to your brain. To manage appetite, ensure your diet includes sufficient fermentable fibers (found in vegetables, fruits, and whole grains) to support natural PYY production.

Short-chain fatty acids (SCFAs), particularly butyrate, produced by gut microbiota fermentation of prebiotics/probiotics, improve insulin sensitivity by activating G-protein-coupled receptors on L-cells to stimulate GLP-1 and PYY release.

Eating prebiotic fibers (like those in chicory, onions, garlic) feeds gut bacteria that produce SCFAs like butyrate. These SCFAs signal your gut to release hormones (GLP-1, PYY) that help regulate blood sugar and appetite.

Physical activity stimulates the production and release of adiponectin, which enhances glucose uptake and fatty acid oxidation through AMPK activation.

Engage in regular physical activity to naturally boost your adiponectin levels. This hormone helps your muscles take up glucose and burn fat more efficiently. You do not need extreme workouts; consistent activity can reverse the low adiponectin levels associated with sedentary living.

Sustained sleep curtailment (less than 6 hours per night) causally increases the risk of developing type 2 diabetes, hypertension, obesity, and cardiovascular disease through hormonal dysregulation, insulin resistance, and vascular changes.

Prioritize getting 7-8 hours of sleep every night as a non-negotiable health intervention. Chronic sleep restriction (less than 6 hours) is as dangerous for your heart and metabolism as obesity or smoking. You cannot simply 'catch up' on weekends to reverse the long-term metabolic damage. Treat sleep duration with the same seriousness as diet and exercise.