Browse the evidence

Physical exercise induces transient oxidative stress (hormesis) which triggers adaptive responses, including increased antioxidant enzyme activity (SOD, CAT, GPx) and mitochondrial biogenesis, ultimately reducing baseline oxidative stress in Type 2 Diabetes.

Engage in regular physical exercise, including moderate-intensity, resistance, or high-intensity interval training. While exercise temporarily increases oxidative stress, this triggers your body to produce more antioxidant enzymes and improve mitochondrial health, reducing overall oxidative stress.

Exercise is generally safe with minimal adverse events, which are typically mild, transient, and comparable to control groups, though reporting of adverse events is often poor in studies.

Exercise is safe for most people. You might experience some muscle soreness, but serious side effects are rare. Do not let fear of injury stop you from exercising, as the benefits to your health and longevity are substantial.

Physical exercise performed at or above World Health Organization recommendations modifies gut microbiota composition by increasing the abundance of health-promoting bacterial species (Faecalibacterium prausnitzii, Roseburia hominis, Akkermansia muciniphila) in premenopausal women.

If you are a premenopausal woman with a healthy BMI, aiming for at least 3 hours of moderate-intensity exercise per week is associated with a gut microbiota profile richer in beneficial bacteria like Faecalibacterium, Roseburia, and Akkermansia compared to a sedentary lifestyle. This suggests that meeting WHO exercise guidelines may support gut health.

Breaking sedentary behavior (increasing sedentary breaks) is independently associated with gut microbiota richness and specific bacterial genera, distinct from the effects of exercise volume alone.

For premenopausal women with a healthy BMI, simply breaking up long periods of sitting with short movements is associated with higher gut microbiota richness. This suggests that reducing continuous sedentary time may be beneficial for gut health, independent of total exercise volume.

Supplementation with alginate acts as an adjunct to energy restriction to enhance satiety and improve weight loss in obese individuals.

If you are trying to lose weight, consider adding alginate (a soluble fiber from seaweed) to your routine. It helps you feel fuller, which can make sticking to a calorie-restricted diet easier. It is not a replacement for eating less, but a tool to help you do it.

Dietary non-adherence, specifically the consumption of high-calorie liquids, 'grazing' (repeated small meals), and food indiscretion (sweets/fats), is a primary behavioral cause of weight regain and insufficient weight loss after bariatric surgery.

Avoid 'grazing' (frequent small snacks) and high-calorie liquids (sugary drinks, milkshakes). These bypass the stomach's physical restriction and satiety signals. Focus on structured, nutrient-dense meals and monitor liquid calorie intake closely.

Habitual social media engagement or exposure to image-related content is associated with higher body dissatisfaction and disordered food choices (including dieting, restricting, and overeating) in healthy young adults.

If you are a young adult, be aware that your social media habits may negatively impact your body image and eating behaviors. Limit exposure to image-heavy content that triggers comparison, and prioritize real-world health goals over online validation.

Physical activity (specifically moderate-to-vigorous physical activity) significantly declines by an average of 5.2 minutes per day during the transition from adolescence (13-19 years) to early adulthood (16-30 years).

If you are moving from your teens into your 20s or 30s, expect your daily moderate-to-vigorous activity to drop by about 5 minutes a day on average. This is a normal response to life changes like starting a job or moving out. To protect your health, you must intentionally structure your time to maintain activity levels, as the natural trend is downward.

Medically tailored meals (MTM) for high-need patients with complex medical conditions reduce overall healthcare costs and hospital admissions.

If you have a complex chronic condition and struggle to prepare healthy meals, ask your doctor about medically tailored meal programs. These are often covered by insurance for high-risk patients and can significantly reduce hospital visits and costs.

Lifestyle management, including healthy lifestyle and emotional well-being, is a core component of PCOS care, with a specific emphasis on avoiding weight stigma.

Focus on healthy habits and mental well-being, not just weight loss. If you have PCOS, your care should include support for your emotional health and quality of life, without judgment about your weight.

PCOS contributes to weight gain and hinders weight loss maintenance through indirect mechanisms including mental health issues (depression, anxiety, poor body image) and emotional barriers to physical activity.

Recognize that PCOS symptoms like hirsutism and irregular periods can cause anxiety and depression, which make weight loss harder. Addressing mental health and body image is a crucial part of managing PCOS and achieving weight loss goals.

Aerobic and resistance training are both effective for reducing depressive symptoms, but mixed training (aerobic + resistance) showed smaller effects in subgroup analysis.

You can choose either aerobic exercise (like running or cycling) or resistance training (weight lifting) to treat depression; both are highly effective. You do not necessarily need to combine them, as the data suggests mixed training showed smaller effects in this analysis.

Emotional eating acts as a behavioral mediator linking psychological distress (depression, anxiety, stress) to increased body weight and obesity.

If you find yourself eating more when stressed or sad, recognize this as 'emotional eating.' It is a learned behavior that links mood to weight gain. To break the cycle, focus on developing non-food coping strategies for negative emotions, such as stress management techniques or therapy, rather than just restricting food intake.

Exercise increases gut microbiota biodiversity and the abundance of health-promoting taxa (e.g., Akkermansia, Faecalibacterium), which correlates with better physical performance and muscle function.

Regular physical activity, especially resistance and aerobic training, naturally improves your gut bacteria diversity. This helps your muscles work better and recover faster, adding to the direct benefits of exercise.

Social isolation increases the risk of depression, anxiety, and neurocognitive problems, which can be mitigated by reinforcing social care measures and using technology for contact.

Stay connected with friends and family using phone calls or video chats. This helps reduce depression and anxiety. Ensure you have access to necessary supplies.

Insoluble dietary fiber (IDF) from whole grains aids in weight management and gastrointestinal health by increasing satiety, fecal mass, and decreasing intestinal transit time.

Include insoluble fiber sources like wheat bran and rye in your diet to improve digestion and feel fuller longer, which may help with weight management.

Waist-to-height ratio (WHtR) is the most accurate anthropometric predictor of whole-body fat percentage and visceral adipose tissue (VAT) mass compared to BMI, waist circumference, waist-to-hip ratio, and waist/height^0.5.

Measure your waist circumference and your height. Divide your waist size by your height. If the result is 0.53 or higher for men, or 0.54 or higher for women, you likely have excess body fat or visceral fat, even if your BMI says you are normal weight. This simple ratio is a better indicator of health risk than BMI or waist-to-hip ratio. Aim to keep this ratio below these thresholds to reduce cardiometabolic risk.

Specific WHtR cut-points (0.53 for men, 0.54 for women for whole-body obesity; 0.59 for visceral obesity) provide a high probability (>=0.75) of identifying individuals with high fat mass or visceral adipose tissue as measured by DXA.

Use these specific numbers to gauge your risk. If your waist-to-height ratio is 0.53 or higher (men) or 0.54 or higher (women), you likely have excess total body fat. If it is 0.59 or higher, you likely have high visceral fat, which is linked to metabolic disease. These thresholds are more accurate than BMI for identifying who needs to take action.

Government-mandated physical isolation measures during the early COVID-19 pandemic caused a significant increase in total energy intake and snacking frequency among young adult females, while simultaneously reducing physical activity levels in both males and females.

If you are living in isolation or working from home, be aware that your default environment encourages higher calorie intake (especially snacking) and lower physical activity. To counter this, you must intentionally recreate the structure you lost: schedule your meals, limit snack availability, and deliberately schedule physical activity sessions since you no longer get incidental exercise from commuting or walking between classes.

Exercise interventions for hip or knee osteoarthritis improve self-efficacy and slightly reduce depression, but have little to no effect on anxiety.

Exercise can help boost your confidence in managing your condition and may slightly reduce depressive symptoms. However, do not expect exercise to significantly alleviate anxiety. Focus on the physical and confidence-building benefits.

Daytime napping, particularly long-duration naps (>= 1 hour), is associated with an increased risk of all-cause mortality, type 2 diabetes, and chronic respiratory disease, likely serving as a marker for underlying health issues or sleep deprivation compensation.

If you find yourself needing long daytime naps (over 1 hour), view it as a signal to prioritize your nighttime sleep. Long naps are associated with higher risks of diabetes and mortality, especially in older adults. Focus on getting 7-8 hours of quality nighttime sleep rather than relying on long daytime naps to compensate.

Pandemic-related lockdown measures and loss of structure exacerbate eating disorder symptoms, specifically increasing dietary restriction in anorexia nervosa and binge-eating urges in bulimia nervosa and binge-eating disorder.

If you have an eating disorder, the removal of daily structure (meals, therapy, exercise) is a major trigger for symptom worsening. To mitigate this, you must proactively recreate external structures: schedule meals, maintain therapy contact (even via telehealth), and establish a daily routine, as the absence of these is directly linked to increased restriction or bingeing.

In humans, modest dietary restriction combined with exercise is associated with smaller nucleoli in muscle biopsies.

For older adults, combining a modest 12.5% reduction in calories with a 12.5% increase in physical activity over 13 weeks was associated with smaller nucleoli in muscle tissue. This suggests that these lifestyle changes may improve cellular metabolic health.

Moderate exercise combined with appropriate energy and protein intake is a necessary intervention to reverse sarcopenia in cirrhosis, potentially alongside pharmacological agents like BCAAs or testosterone.

Cirrhosis patients should engage in moderate exercise alongside a high-protein, high-calorie diet (1.2-1.5g/kg protein, >35 kcal/kg). A late-night snack is crucial to prevent overnight catabolism.