Browse the evidence

Structured cardiac prevention and rehabilitation programs significantly reduce all-cause and cardiac mortality in coronary patients compared to standard care.

If you have coronary disease, ask your doctor for a referral to a structured cardiac rehabilitation program. These programs combine exercise, diet, and smoking cessation advice, and are proven to save lives compared to standard care alone. Do not wait for symptoms to worsen; access is a key part of secondary prevention.

Supervised resistance exercise training significantly increases muscle strength and functional capacity in frail elderly individuals, demonstrating that physical frailty is not an irreversible consequence of aging.

If you or a loved one is experiencing frailty or loss of strength, do not accept it as inevitable. Supervised resistance training (approx. 45 mins, 3x/week) can significantly restore muscle strength and mobility, even in nursing home residents in their 80s. The key is consistency and supervision to overcome the high dropout rates typical of self-directed exercise.

Structured Internet behavioral weight loss programs with weekly therapist contact and individualized feedback produce significantly greater initial weight loss and waist circumference reduction compared to providing access to educational web resources alone.

To lose weight using internet technology, you need more than just information. You need a structured program that includes weekly lessons, regular self-monitoring of your diet and activity, and direct, personalized feedback from a therapist. This approach was shown to be significantly more effective than just having links to weight loss websites.

Mandatory nutrition labeling on pre-packaged foods is a cost-effective population-level intervention that consistently links to healthier dietary habits, including reduced fat, sodium, and energy intake, and increased fiber and nutrient consumption.

Use nutrition labels on pre-packaged foods to guide your purchases. Look for labels that simplify information, such as front-of-pack 'traffic light' systems or symbols, which are more effective than complex quantitative data. Consistent use of these labels is associated with healthier diets, including lower fat, sodium, and energy intake, and higher fiber and nutrient consumption. Governments are encouraged to mandate clear, accessible labeling to maximize public health benefits.

Sleep deprivation impairs cognitive and motor performance to a degree comparable to alcohol intoxication at or above the legal limit, significantly increasing the risk of motor vehicle crashes and work-related injuries.

Driving or operating machinery while sleep-deprived is as dangerous as driving drunk. If you are tired, do not drive. The risk of a fatal accident increases significantly because your reaction time and judgment are impaired to the level of legal intoxication.

Lifestyle interventions, specifically physical activity and fitness, can counteract obesity-associated inflammation by reducing serum levels of pro-inflammatory markers like CRP, IL-6, and TNFα.

Engage in regular physical activity and aim to improve cardio-respiratory fitness. This can help lower inflammatory markers like CRP and TNFα, even if weight loss is slow or modest. Focus on consistency and fitness improvements rather than just scale weight.

Adding up to one hour of daily physical activity to the school curriculum does not negatively impact academic achievement and may improve learning efficiency.

Schools should not cut physical education to focus on test prep. Adding up to an hour of daily activity does not hurt grades and may help students learn better. Keep PE and recess.

Adhering to four specific health behaviors (non-smoking, moderate alcohol intake, adequate physical activity, and high fruit/vegetable intake) reduces all-cause mortality by approximately 4-fold compared to having none of these behaviors, an effect equivalent to being 14 years younger in chronological age.

To maximize your longevity, focus on four key areas: do not smoke, engage in regular physical activity (avoid being sedentary), drink alcohol moderately (1-14 units/week if you drink), and eat enough fruits and vegetables to maintain healthy blood vitamin C levels. Doing all four can reduce your mortality risk by 75% compared to doing none, effectively making you 14 years biologically younger.

Exercise improves quality of life (physical and mental summary scores) in patients with intermittent claudication.

Exercise helps you feel better mentally and physically. Studies show that after six months of exercise, patients report better physical function and mental well-being. This is a key benefit of sticking with an exercise program.

Physical activity, specifically aerobic exercise, can restore the sensitivity of aging muscle to insulin and protein stimuli, counteracting the age-related blunting of muscle protein synthesis.

To get the most out of your protein, try adding a 45-minute walk to your routine, especially the evening before or on days when you are focusing on muscle maintenance. This simple activity can help your muscles respond better to the protein you eat.

High-intensity resistance exercise training (HIRT) significantly increases muscle cross-sectional area and knee extensor torque in elderly populations, effectively counteracting age-related sarcopenia.

Start with resistance training twice a week for 30 minutes. You can use machines, body weight, or elastic bands. This is safe for frail elderly people and significantly boosts muscle strength and size, helping prevent falls and maintain independence.

Monthly brief personal contact (telephone/face-to-face) provides modest but statistically significant benefit in sustaining weight loss compared to self-directed control over 30 months.

To maintain weight loss, schedule brief monthly check-ins with a coach, doctor, or support group. These should be short (5-15 minutes) and focus on reviewing progress, addressing barriers, and reinforcing goals. This external accountability significantly reduces the amount of weight regained compared to trying to maintain weight loss entirely on your own.

Resistance exercise improves NAFLD and may be more tolerable for patients with poor cardiorespiratory fitness who cannot tolerate intense aerobic exercise.

If you struggle with intense cardio like running, try resistance training. It improves NAFLD and is often easier for people with low fitness levels to maintain consistently.

Physical activity interventions that combine self-directed activity with professional guidance and ongoing support produce moderate, statistically significant improvements in self-reported physical activity and cardio-respiratory fitness in adults.

To successfully increase your physical activity, do not rely on a single piece of advice or a one-time class. Instead, choose activities you enjoy (self-directed) but ensure you have a professional or coach to guide your choices and check in with you regularly over at least six months. This combination of autonomy and support is proven to work best.

Increasing daily step count to 8,000 or more steps per day is significantly associated with lower all-cause, cardiovascular, and cancer mortality in US adults aged 40 and older, independent of step intensity.

To maximize longevity, aim for at least 8,000 steps per day. If you can reach 12,000, the mortality benefit is even greater. You do not need to walk fast or intensely; the total number of steps is the key factor. Start where you are and gradually increase your daily step count.

Weight loss through lifestyle modification in obese women restores menstrual cyclicity and ovulation, thereby improving the likelihood of conception.

Lose weight through diet and exercise. This is not just for health but specifically to restore ovulation and improve your chances of getting pregnant. The paper states this is proven to work.

Increasing daily step volume to approximately 4,400 steps is associated with significantly lower all-cause mortality compared to lower volumes (approx. 2,700 steps), with benefits continuing to increase until approximately 7,500 steps per day.

For older women, aiming for 4,400 steps a day provides significant mortality benefits compared to being sedentary. Increasing steps up to 7,500 a day yields progressively greater benefits. You do not need to force yourself to 10,000 steps to see health improvements; focus on reaching 4,400 first, then gradually increase toward 7,500.

Mobile phone app-based interventions result in statistically significant weight loss (mean -1.04 kg) and BMI reduction (mean -0.43 kg/m²) compared to control groups.

Use a mobile app designed for weight loss that allows you to track your food and activity. The app itself provides a small but significant advantage (about 1 kg more weight loss) compared to standard care. To make it work, choose an app that is easy to use and engaging, as sticking with it is the key to success.

High-intensity counseling and behavioral interventions produce modest but sustained weight loss (3-5 kg) in adults, with multi-component approaches (diet, exercise, behavioral therapy) being most effective.

To lose weight effectively, you need a structured program that includes diet, exercise, and behavioral strategies, delivered with frequent contact (more than monthly) for at least the first few months. This approach typically results in a modest but sustained loss of 3-5 kg.

Counselling sedentary adults on physical activity in general practice, supported by ongoing telephone contact, significantly increases leisure time physical activity and improves quality of life over 12 months.

If you are sedentary, ask your doctor for a 'green prescription' for physical activity. This involves a brief discussion about setting goals, followed by support calls from an exercise specialist. This approach has been shown to significantly increase your weekly exercise time and improve your overall quality of life over a year.

Regular physical activity reduces the risk of developing both type 2 diabetes and hypertension, with effects observed across various population cohorts and independent of genetic susceptibility factors like the FTO gene.

Make physical activity a non-negotiable part of your routine to protect against diabetes and high blood pressure. You don't need to be an elite athlete; studies show that moderate-to-vigorous leisure-time activity significantly lowers your risk. If you have a family history of obesity or diabetes, staying active is even more critical as it can counteract genetic risks. Focus on consistency—walking, cycling, or other forms of exercise—rather than intensity, as even small increments in activity provide measurable benefits.

Computer-tailored health education interventions are effective for promoting dietary changes, specifically reducing fat intake and increasing fruit and vegetable consumption, with effects generally observed in the short to medium term.

To improve your diet, look for programs that offer personalized feedback based on your specific habits rather than generic advice. Computer-tailored programs that track your fat intake or fruit/vegetable consumption and provide individualized goals have shown consistent, albeit small, positive effects. These programs often use behavioral theories to help you set realistic goals and track your progress, making them more effective than standard pamphlets or lectures.

Both aerobic and strengthening exercises reduce pain and improve function in patients with knee osteoarthritis, with strong evidence for knee OA but limited evidence for hip OA.

If you have knee osteoarthritis, both aerobic exercise (like walking) and strengthening exercises are proven to reduce pain and improve function. Start with low-impact activities and focus on strengthening the muscles around the joint. While evidence for hip OA is less robust, exercise is generally considered safe with few contraindications.

Maintaining or increasing muscle mass and strength is a primary strategy for promoting healthy aging and reducing mortality risk in older adults, potentially mitigating the risks associated with obesity.

As you age, prioritize building and keeping muscle over just losing weight. Engage in regular resistance training and ensure adequate protein intake. This preserves your metabolic health, reduces cardiovascular risk, and is more important for longevity than simply trying to lower your BMI.