Browse the evidence

Urbanization and immigration into high-calorie, low-activity environments significantly increase the prevalence of obesity and diabetes, with risk increasing the longer one resides in the new environment.

Moving to a city or changing lifestyle often triggers weight gain due to easier access to cheap, high-calorie food and less physical activity. Mitigate this by actively seeking out healthy food sources and safe exercise spaces, and engage with community health initiatives.

Physical inactivity is highly prevalent across all stages of chronic kidney disease (CKD), with prevalence worsening as disease progresses, reaching a nadir in patients requiring dialysis.

If you have kidney disease, know that being inactive is very common, especially as your condition advances or if you are on dialysis. This is not your fault; factors like fatigue, treatment schedules, and fear of harm are real barriers. Start small: even short, moderate walks (30-60 mins, 3x/week) are safe and beneficial. Focus on building confidence (self-efficacy) and readiness to change rather than intense workouts immediately.

Short-term use of sit-stand workstations in office settings reduces daily sitting time and improves cardiometabolic risk markers (specifically total cholesterol and flow-mediated dilation) without increasing musculoskeletal pain.

Install a sit-stand workstation and use it whenever possible, but do not force a specific standing duration. Monitor your comfort levels; if you experience pain, adjust your posture or take breaks. Be aware that social pressure and old habits may reduce usage over time, so consciously remind yourself to stand.

Long-term pharmacotherapy for obesity is consistent with the consensus that obesity is a chronic disease requiring long-term management, as short-term interventions fail to sustain weight loss.

Treat obesity as a chronic condition, not a short-term goal. Just like managing blood pressure, it requires ongoing management. This mindset shift is crucial for deciding whether to use long-term pharmacotherapy.

Higher total daily sedentary time is independently associated with increased cancer mortality risk in middle-aged and older adults, regardless of moderate-to-vigorous physical activity (MVPA) levels.

If you are over 45, your total daily sitting time matters for your long-term survival risk, independent of how much you exercise. Use an accelerometer or pedometer to track total sedentary minutes. Aim to reduce total sitting time, not just to 'get your workout in,' but to lower your baseline risk profile.

Circadian misalignment, such as night-shift work or irregular eating patterns, impairs hepatic metabolic function and increases the risk of developing NAFLD and insulin resistance.

Maintain a consistent sleep-wake cycle and try to align your eating window with your active hours. Disrupting your body's internal clock (e.g., through night shifts or late-night eating) can worsen insulin resistance and increase the risk of fatty liver, even if your diet is otherwise healthy.

Personalized nutrition approaches should align with population-based recommendations for healthy individuals, with substantial divergence requiring significant scientific justification.

For healthy people, personalized nutrition should generally stay within standard healthy eating guidelines. If a program suggests a radical diet, it should provide strong scientific reasons for why it differs from standard advice.

Consuming foods with higher physical hardness reduces total energy intake at a meal and sustains that reduction at the subsequent meal without compensatory overeating.

To naturally reduce your calorie intake without feeling deprived, choose foods that require more chewing, such as whole grains, raw vegetables, or leaner meats with connective tissue, over softer, highly processed alternatives. This study shows that harder foods slow down your eating rate and reduce the amount you eat at a meal, and this benefit carries over to your next meal because your body doesn't compensate by eating more later. Focus on texture changes rather than just portion sizes.

In non-obese individuals, recent dieting behavior is a robust prospective predictor of future weight gain, whereas measures of general dietary restraint are not.

If you are not obese but have been dieting recently, you are at higher risk for future weight gain. Instead of starting another restrictive diet, use this as a signal to adopt sustainable, long-term healthy habits to prevent weight gain, as dieting itself is a poor predictor of success and a strong predictor of gain in this group.

High neighborhood fast-food outlet exposure is independently associated with higher BMI, body fat, and obesity odds, with a dose-response relationship observed across quartiles of exposure.

If you live in an area with many fast-food outlets, your risk of obesity is higher, even if you have a good income. This is likely because easy access makes unhealthy food the default choice. To counter this, be aware of your environment and plan your meals in advance to avoid relying on nearby fast-food options.

Low household income is independently associated with higher BMI, body fat, and obesity odds, with a dose-response relationship observed across income levels.

If you have a lower income, your risk of obesity is higher, even if you live in an area with few fast-food outlets. This is likely because budget constraints lead to cheaper, energy-dense food choices. To counter this, prioritize affordable, nutrient-dense foods like beans, lentils, and seasonal vegetables.

The combination of lowest household income and highest fast-food outlet exposure results in a 'double burden' with greater odds of obesity and frequent processed meat consumption than either factor alone, demonstrating additive interaction.

If you have a low income and live in an area with many fast-food outlets, your risk of obesity is significantly higher than if you only had one of these risk factors. This is because budget constraints and easy access to unhealthy food interact to make healthy eating very difficult. To counter this, focus on strategies that address both cost and access, such as meal planning and seeking out affordable, healthy food options.

Intensified Health Education (IHE) comprising dietary advice, physical activity promotion, and smoking/alcohol cessation significantly improves glycemic control and reduces the need for antidiabetic drugs in newly diagnosed NIDDM patients, but fails to prevent cardiovascular complications or improve lipid profiles.

For newly diagnosed type 2 diabetics, structured education on diet quality, exercise, and smoking cessation significantly improves blood sugar control and delays the need for medication. However, this approach alone does not prevent heart attacks or lower cholesterol, suggesting that additional medical interventions (like lipid-lowering drugs) may be necessary for cardiovascular protection.

Subjective feelings of loneliness are robustly associated with poorer sleep quality (specifically subjective quality and daytime dysfunction) in young adults, independent of social isolation, psychopathology, and genetic/family confounds.

If you are feeling lonely, expect your sleep quality to suffer, specifically how rested you feel and your daytime energy, even if you get enough hours in bed. This is not just 'in your head' but a documented physiological response involving threat vigilance. Addressing the underlying social connection or cognitive perception of isolation may be more effective for sleep than standard sleep hygiene alone.

Higher cumulative physical exercise duration (minutes per month) is inversely associated with serum levels of biomarkers for DNA damage and telomere dysfunction, independent of chronological age.

Regular physical exercise helps reduce biological markers of DNA damage and telomere dysfunction in your blood. The more you exercise (measured in minutes per month), the lower these markers tend to be, independent of your age. Incorporating regular exercise is a key strategy for maintaining cellular health.

Maintaining high levels of control beliefs, social support, and physical exercise in midlife significantly reduces age-related declines in functional health over a 10-year period, independent of physical risk factors.

Focus on building strong social connections, maintaining a sense of control over your life, and exercising vigorously during your 40s and 50s. These habits act as a buffer, preserving your physical independence and reducing disability risk when you reach your 60s and 70s.

Obesity prevalence is significantly higher in lower-socioeconomic-status (SES) and minority populations primarily due to environmental constraints (obesogenic environment) rather than individual lack of willpower or genetic factors alone.

If you live in a food desert or an unsafe neighborhood, your struggle with weight is not a moral failure. The environment is designed to make unhealthy choices the default. Advocating for better local food options and safe spaces for exercise is as important as personal diet changes.

A multifaceted behavioral change program (ParkFit) does not increase overall physical activity volume in sedentary Parkinson's disease patients, though it improves specific activity types and physical fitness.

For Parkinson's patients, simply 'trying harder' to be active via behavioral coaching may not increase your total daily movement time. However, it can improve your fitness and specific exercise habits without increasing fall risk. Focus on the quality and type of activity (like walking or cycling) rather than just total hours, as these specific improvements are measurable and beneficial.

The deleterious effects of total sitting time on HDL cholesterol, triglycerides, and post-load glucose become significantly more severe as the duration of uninterrupted sitting bouts increases.

Be aware that sitting for long periods (e.g., >30 mins) is worse for your cholesterol and blood sugar than sitting for the same total time in shorter chunks. If you have a long meeting or drive, try to break it up if possible to mitigate the metabolic impact.

Increased sleep irregularity (defined as higher standard deviation of daily sleep duration) is associated with increased odds of incident obesity, essential hypertension, hyperlipidemia, major depressive disorder, and generalized anxiety disorder.

Focus on keeping your sleep schedule consistent. Going to bed and waking up at roughly the same time every day is critical for preventing obesity, hypertension, and depression, even if you are getting the recommended 7-9 hours of total sleep. Use wearable data to track your sleep regularity (consistency) rather than just total hours.

In adults over 66 years, high protein intake is associated with reduced all-cause and cancer mortality compared to low protein intake, likely to prevent sarcopenia and frailty.

If you are over 66, ensure you are getting adequate protein. Low protein intake in this age group is linked to higher death rates, likely due to muscle loss and frailty. Focus on high-quality protein sources.

Adopting a low-risk lifestyle profile (non-smoking, regular physical activity, healthy social network, and leisure activities) significantly extends median survival in adults aged 75 and older, adding approximately 5-6 years compared to high-risk profiles.

If you are over 75, your lifestyle still matters significantly for how long you live. Focus on staying physically active (walking, swimming, gymnastics), avoiding smoking, maintaining social connections, and engaging in leisure activities. These combined behaviors can add roughly five to six years to your life expectancy compared to a high-risk profile, even if you have chronic health conditions.

Cognitive-behavioral therapy (CBT) for insomnia significantly reduces hypnotic drug use and improves sleep quality in long-term users, with effects sustained for at least 12 months.

If you have been using sleeping pills for a long time, consider asking your doctor for a referral to a CBT for insomnia program. This therapy, often delivered by primary care counsellors, involves about six weekly sessions focusing on sleep habits and thoughts about sleep. It has been shown to help many people reduce or stop their medication while improving their sleep quality, with benefits lasting at least a year. Age is not a barrier to success.

The implementation of a tiered Soft Drinks Industry Levy (SDIL) in the UK accelerated the reformulation of soft drinks, resulting in a 30% reduction in per capita sugar sales from 2015 to 2018.

Government policies that financially penalize high-sugar products (like the UK's Soft Drinks Industry Levy) effectively drive manufacturers to reformulate their recipes. This results in a significant, measurable decrease in the amount of sugar available to consumers, demonstrating that fiscal policy can successfully alter industry behavior and public health outcomes.