Browse the evidence

Increasing leisure-time physical activity (LTPA) in later adulthood (ages 40-61) after a period of inactivity reduces all-cause, cardiovascular disease (CVD), and cancer-related mortality to levels comparable to those who maintain high activity levels from adolescence.

If you have been inactive for most of your life, starting or significantly increasing your physical activity between ages 40 and 61 can drastically lower your risk of dying from any cause, heart disease, or cancer. You do not need to have been an athlete since youth to gain these life-extending benefits; the key is to become active in later adulthood.

Intensive lifestyle intervention (dietary modification, exercise, and education) significantly reduces Obstructive Sleep Apnea (OSA) severity, measured by Apnea-Hypopnea Index (AHI), in obese patients with type 2 diabetes, with benefits persisting for 4 years despite partial weight regain.

If you have type 2 diabetes and sleep apnea, committing to a structured lifestyle program that includes diet changes and moderate exercise can significantly improve your sleep quality. Even if you don't keep all the weight off in the long run, the initial improvement in your sleep apnea severity tends to last for years. Start with manageable steps like portion control and walking, and seek support through a structured program rather than trying to do it alone.

The rate of starch digestion (RAG vs SAG) is a better predictor of postprandial glycemic response than total starch content, with Rapidly Available Glucose (RAG) being the main determinant of blood glucose spikes.

When eating starchy foods, choose those with higher Slowly Available Glucose (SAG) and lower Rapidly Available Glucose (RAG). This means choosing whole grains, pasta, or legumes over highly processed cereals or breads, as the latter cause sharper blood sugar spikes due to rapid starch digestion.

Obesity increases the risk of developing osteoarthritis by 36% for every 5 kg of weight gain, primarily through mechanical stress and systemic inflammation.

Maintaining a healthy weight is crucial for preventing osteoarthritis. Every 5 kg of weight gain significantly increases your risk of developing joint pain and OA.

Liraglutide, a GLP-1 receptor agonist, improves glycemic control and reduces body weight in type 2 diabetes through glucose-dependent insulin secretion, glucagon suppression, and delayed gastric emptying, with a low risk of hypoglycemia.

Liraglutide is a once-daily injection for type 2 diabetes that helps control blood sugar and promotes weight loss. It works by mimicking a natural hormone (GLP-1) to increase insulin when blood sugar is high and decrease glucagon. Because it only works when blood sugar is elevated, it has a low risk of causing dangerously low blood sugar. Treatment starts at a lower dose to minimize stomach issues, then increases based on how well it controls your blood sugar.

Intensive lifestyle modification (ILS) significantly increases the likelihood of regression from pre-diabetes to normal glucose regulation (NGR) compared to placebo, with effects driven by both weight loss and non-weight-loss components of the intervention.

If you have pre-diabetes, you can reverse it. The most effective way is through Intensive Lifestyle Modification (ILS), which involves a low-calorie, low-fat diet and at least 150 minutes of moderate exercise (like brisk walking) per week, aiming for a 7% weight loss. Crucially, even if you don't hit the 7% weight loss goal, the lifestyle changes themselves (diet and exercise) independently help restore normal glucose regulation. Don't rely solely on medication like Metformin for reversal, as it was not significantly effective for this specific outcome in this study. Focus on sustainable habits.

Simple step-count monitoring interventions (pedometers) significantly increase daily step counts in community-dwelling adults, with effects sustained for up to 3-4 years, whereas more complex interventions (body-worn trackers, smartphone apps, counseling, or incentives) do not provide additional benefit and may be less effective.

Use a simple pedometer. It works. You don't need a smartphone app, a body-worn tracker, or expensive counseling to increase your steps. The data shows that simple step-count monitoring leads to sustained increases in physical activity for years, while more complex interventions offer no extra benefit and may even be less effective.

Caffeine supplementation (3-6 mg/kg body mass) taken 60 minutes before exercise consistently improves endurance performance by approximately 3.2% and high-intensity sprint performance by approximately 6.5%.

Take 3-6 mg of caffeine per kg of body weight about an hour before your event. For a 70kg athlete, this is roughly 210-420mg. This dose is proven to improve endurance by ~3% and high-intensity efforts by ~6.5%. Do not exceed this dose, as higher amounts increase side effects like anxiety and nausea without improving performance. This works regardless of whether you are a regular coffee drinker.

Weight loss of 5-10% significantly improves reproductive outcomes (ovulation, menstrual regularity) and metabolic markers (insulin resistance, lipids) in women with PCOS, regardless of the specific dietary composition used to achieve the weight loss.

Aim for a 5-10% reduction in body weight through a moderate energy deficit (500-750 kcal/day). You do not need to follow a specific restrictive diet (like low-carb or low-fat) to see benefits; any dietary approach that helps you achieve this weight loss will improve insulin resistance, lipids, and reproductive health.

Trans fatty acids (TFAs) from partially hydrogenated oils, commonly found in fast food, are associated with increased risk of coronary heart disease, systemic inflammation, and adverse lipid profiles (increased LDL, decreased HDL).

Industrial trans fats, found in some fast foods, significantly increase the risk of heart disease and worsen cholesterol levels. Avoid foods with partially hydrogenated oils. Look for products with low or zero trans fat content, and prioritize diets rich in unsaturated fats.

Higher adherence to the Mediterranean Diet Score (MDS) is associated with a statistically significant reduction in all-cause mortality.

Adhere to a Mediterranean-style eating pattern, emphasizing vegetables, fruits, legumes, whole grains, fish, and olive oil, with moderate alcohol consumption if applicable. This dietary pattern is associated with a significant reduction in the risk of death from all causes.

The DASH diet (rich in fruits, vegetables, low-fat dairy, fiber, and minerals) produces a potent antihypertensive effect, reducing systolic and diastolic blood pressure more effectively than control diets or single-nutrient interventions.

Adopt the DASH diet: eat 8-10 servings of fruits and vegetables daily, 3 servings of low-fat dairy, and ensure you get enough fiber (31g) and minerals (potassium, magnesium, calcium). This dietary pattern significantly lowers blood pressure, especially if you are hypertensive, and is not overly restrictive.

Exercise is highly recommended for osteoarthritis patients, as it reduces pain, improves quality of life, and improves physical function, reversing previous guidelines that discouraged exercise.

If you have osteoarthritis, exercise is one of the best treatments. It reduces pain and helps you function better. Choose low-impact activities like swimming or cycling. If you feel pain during exercise, stop. If you have pain the next day, reduce the amount by half and build up slowly.

Supplemental calcium (≥1200 mg) alone or combined with vitamin D (≥800 IU) reduces the risk of osteoporotic fractures in adults aged 50 and older.

If you are 50 or older, taking at least 1200 mg of calcium and 800 IU of vitamin D daily can reduce your risk of breaking a bone. This is a proven, relatively inexpensive way to protect your skeletal health as you age.

Higher compliance rates and higher doses of calcium (≥1200 mg) and vitamin D (≥800 IU) significantly increase the fracture risk reduction.

To get the most benefit, aim for at least 1200 mg of calcium and 800 IU of vitamin D daily. Taking these doses consistently is more effective than taking lower doses irregularly.

Calcium and Vitamin D supplementation reduces the rate of bone loss at the hip and spine in adults aged 50 and older.

Supplementing with calcium and vitamin D helps slow down the natural loss of bone density in your hips and spine, which is a key factor in preventing fractures.

Higher levels of total, occupational, and nonoccupational physical activity are inversely associated with the risk of major cardiovascular diseases (CVD), including coronary events, stroke, and CVD death, in Chinese adults.

Aim for about 1 hour of moderate activity (like brisk walking) daily. This benefit applies whether you get it from work, chores, commuting, or leisure time. If you have high blood pressure, talk to your doctor before starting vigorous exercise, as the benefits may be less clear or potentially risky at very high intensities if uncontrolled.

Obesity, particularly abdominal-visceral obesity, is a primary risk factor for metabolic syndrome and cardiovascular disease through mechanisms involving insulin resistance, chronic inflammation, and dyslipidemia.

Maintaining a healthy weight, particularly around the abdomen, is crucial for preventing metabolic syndrome and heart disease. This involves managing caloric intake, increasing physical activity, and monitoring blood pressure and lipid levels.

The combination of Aerobic Exercise (AEX) and Weight Loss (WL) produces additive improvements in both glucose tolerance and insulin sensitivity, superior to either intervention alone.

For older obese men, doing both aerobic exercise and losing weight is the best way to improve overall glucose health. Exercise improves how muscles use insulin, while weight loss helps your body handle sugar loads. Doing both provides the most comprehensive protection against diabetes.

Adherence to a Mediterranean Diet reduces the risk of developing Type 2 Diabetes by 19-30% and improves glycemic control (HbA1c) in existing patients.

Adhere to a Mediterranean Diet to significantly lower your risk of developing Type 2 Diabetes. This dietary pattern is recommended by major diabetes associations for improving glucose and lipid metabolism.

Adherence to a Mediterranean Diet improves cardiovascular risk factors (lipids, blood pressure) and reduces the risk of cardiovascular disease events in patients with Type 2 Diabetes.

If you have Type 2 Diabetes, following a Mediterranean Diet can significantly improve your blood sugar, cholesterol, and blood pressure levels, reducing your risk of heart disease and stroke.

Calcium supplementation (1,000-1,200 mg/day) combined with Vitamin D reduces the risk of osteoporotic fractures and improves bone mineral density in postmenopausal women.

If you are a postmenopausal woman at risk for osteoporosis, take 1,000-1,200 mg of calcium daily along with 800 IU of Vitamin D. This combination has been shown to significantly reduce your risk of fractures. Consult your doctor to determine the right dose for you.

Semaglutide 2.4 mg once weekly improves symptoms, exercise capacity, and reduces inflammation in patients with obesity-phenotype heart failure with preserved ejection fraction (HFpEF) across all obesity classes (BMI 30-34.9, 35-39.9, and ≥40 kg/m²), with clinical benefits directly proportional to the magnitude of weight loss.

If you have heart failure with preserved ejection fraction and obesity, semaglutide (2.4 mg weekly) is a proven treatment that improves your heart symptoms, exercise ability, and inflammation. The more weight you lose, the more you benefit, regardless of whether your obesity is Class I, II, or III. This treatment works best when combined with a moderate caloric deficit (500 kcal/day) and regular physical activity.

Lifestyle modification (diet and exercise) is the first-line therapy for dyslipidemia in PCOS, and statins are a novel therapeutic approach that improves lipid profiles and reduces testosterone and insulin resistance.

Start with diet and exercise as your primary treatment for PCOS-related lipid issues. If your LDL remains high (above 160 mg/dL) or non-HDL-C is high (above 190 mg/dL) despite lifestyle changes, discuss statins with your doctor. Statins can help lower both cholesterol and testosterone/insulin resistance, but you must use contraception if taking them.