Browse the evidence

High consumption of sugar-sweetened beverages (SSBs) increases the risk of incident coronary heart disease (CHD) in men, independent of traditional risk factors like BMI and type 2 diabetes.

If you drink sugary sodas or fruit punches regularly, you are increasing your risk of heart disease. This risk exists even if you are not overweight or have normal blood sugar. Switching to water or unsweetened beverages is a key step for heart health. Diet sodas do not appear to carry the same risk, but they are not a 'health food' either.

High consumption of sugar-sweetened beverages is associated with adverse changes in blood biomarkers, including increased triglycerides, inflammatory markers (CRP, IL-6), and decreased HDL and leptin.

Regular sugary drink consumption worsens your blood chemistry even if you don't have diagnosed heart disease. It raises inflammation and bad fats while lowering good fats. This happens gradually and contributes to long-term heart risk.

Adherence to a Western dietary pattern, characterized by high intake of red and processed meats, refined grains, and sweets, significantly increases the risk of developing type 2 diabetes in women.

To lower your risk of type 2 diabetes, limit your intake of red and processed meats (like bacon, hot dogs, and sausages), refined grains, and sweets. Instead, focus on a diet rich in fruits, vegetables, legumes, whole grains, fish, and poultry. This shift in dietary pattern is associated with a significantly lower risk of developing diabetes.

Higher intake of processed meats is associated with a greater increase in type 2 diabetes risk compared to red meat intake.

When choosing meats, prioritize fresh, unprocessed options like chicken, fish, or fresh beef over processed options like bacon, hot dogs, and sausages. Processed meats are linked to a higher risk of type 2 diabetes than red meats, likely due to additives and processing methods.

Minority ethnic groups (Asians, Hispanics, Blacks) have a significantly higher risk of type 2 diabetes than Whites, independent of BMI, with Asians showing the strongest association between weight gain/BMI and diabetes risk.

If you are Asian, Hispanic, or Black, your risk of developing type 2 diabetes is higher than that of a White person with the same BMI. For Asians specifically, even small amounts of weight gain or slight increases in BMI carry a disproportionately higher risk of diabetes compared to Whites. This means maintaining a healthy weight and eating a diet high in fiber and polyunsaturated fats (and low in trans fats and glycemic load) is critically important, potentially offering greater protective benefits for you than for a White person with similar habits.

Long-term consumption of coffee (regular or decaffeinated) and total caffeine is associated with a statistically significant reduction in the risk of developing type 2 diabetes mellitus.

If you currently drink coffee, continuing or moderately increasing your intake (up to 6+ cups/day) is associated with a significantly lower risk of developing type 2 diabetes. This benefit applies to both regular and decaffeinated coffee, suggesting factors beyond caffeine (like magnesium and antioxidants) contribute. However, do not start drinking coffee if you do not currently consume it solely for diabetes prevention; the observational nature of the evidence means causality is not proven, and individual tolerance to caffeine varies.

Current anti-obesity medications improve weight and metabolic parameters but do not yet have data supporting a reduction in hard cardiovascular outcomes.

While these drugs significantly reduce weight and improve metabolic markers, they have not yet been proven to reduce hard cardiovascular events like heart attacks or strokes. Weight loss itself is a key factor in long-term health.

High consumption of artificially sweetened beverages (ASBs) is associated with increased total and cardiovascular mortality, particularly in women, though substituting ASBs for SSBs may offer a modest mortality benefit.

If you consume high amounts of artificially sweetened beverages, consider reducing intake, especially if you are a woman. While replacing SSBs with ASBs reduces mortality risk compared to drinking SSBs, water remains the optimal choice for longevity.

Regular walking, specifically measured by MET-hours or walking pace, is inversely associated with cardiovascular disease risk in diabetic women, independent of vigorous exercise.

You don't need to run or lift heavy weights to protect your heart if you have diabetes. Focus on walking regularly. Aim for a brisk pace (3-4 mph) and accumulate walking time throughout the week. This specific type of activity significantly lowers your risk of heart disease and stroke, even if you aren't doing other intense workouts.

Both obesity (high BMI) and physical inactivity are independently and strongly associated with increased prevalence of type 2 diabetes and cardiovascular comorbidities, meaning fitness does not override the risks of fatness.

You cannot exercise away the risks of obesity, nor can you ignore the risks of inactivity by just being thin. To minimize your risk of diabetes and heart disease, you must address both your body weight and your activity level simultaneously.

Consumption of tuna or other broiled/baked fish (≥3 times/week) is associated with a significantly lower risk of total and arrhythmic ischemic heart disease (IHD) death in older adults, whereas fried fish or fish sandwich consumption shows no such benefit and trends toward higher risk.

If you are over 65 and want to protect your heart, eat tuna or other baked/broiled fish at least three times a week. Avoid fried fish and fish sandwiches, as they do not offer the same heart protection and might even increase risk. The way you cook the fish is just as important as the fish itself.

Consuming nuts two or more times per week is associated with a significantly reduced risk of sudden cardiac death compared to rare or no consumption.

Aim to eat a small handful (about 1 ounce) of nuts at least twice a week. This habit is linked to a significantly lower risk of sudden cardiac death in men. You do not need to eliminate other foods to make room for nuts; just ensure your overall calorie intake stays stable. Focus on variety, as walnuts provide specific antiarrhythmic fatty acids.

Bariatric surgery (Roux-en-Y gastric bypass, vertical sleeve gastrectomy, biliopancreatic diversion) induces sustained weight loss and high remission rates for type 2 diabetes compared to non-surgical management.

For adults with severe obesity (BMI ≥35-40) who have not succeeded with lifestyle changes, bariatric surgery is the most effective intervention for sustained weight loss and type 2 diabetes remission. It involves surgical alteration of the stomach and/or intestines. Lifelong daily nutritional supplementation and regular medical monitoring are required to prevent deficiencies.

Consuming nuts two or more times per week is inversely associated with total mortality and mortality from heart disease, cancer, and respiratory disease compared to never consuming nuts.

To support long-term health and reduce mortality risk, aim to eat a serving of nuts (about 1 ounce or 28 grams) at least twice a week. This can include tree nuts (almonds, walnuts, etc.) or peanuts. Consistency matters more than the specific type, as both showed similar benefits. This habit is associated with lower risks of death from heart disease, cancer, and respiratory issues.

Regular resistance training attenuates the acute increase in muscle protein breakdown (FBR) and synthesis (FSR) following intense pleiometric exercise compared to untrained individuals.

If you are experienced in resistance training, your body becomes more efficient at handling intense workouts. You will see a smaller spike in muscle protein breakdown and synthesis immediately after training compared to when you were a beginner. This does not mean you aren't growing; it means your muscles are adapted to handle the stress with less damage and turnover. Focus on consistency and progressive overload rather than chasing acute soreness or 'maximal' spikes in synthesis.

Maintaining a Body Mass Index (BMI) between 18.5 and 25.0 kg/m2 reduces the risk of several cancers, including breast (postmenopausal), colon, endometrium, esophagus, gallbladder, pancreas, and kidney cancers.

Strive to maintain a BMI between 18.5 and 25.0 kg/m2 by balancing your caloric intake with physical activity. If you are overweight or obese, focus on gradual weight loss through portion control and increased activity, as this reduces risk for multiple cancers.

Habitual dynamic exercise does not increase protein requirements and may improve metabolic efficiency, while resistance exercise requires increased amino acid availability post-exercise to achieve net positive protein balance.

You do not need to eat more protein just because you exercise regularly. Your body actually becomes more efficient at using protein with training. However, if you do heavy resistance training (weightlifting), you must ensure you eat enough protein after your workout to help your muscles recover and grow, because your body breaks down protein faster than it builds it immediately after the session.

High-intensity dynamic exercise (>70% VO2max) causes a net loss of muscle protein due to increased amino acid oxidation and breakdown, whereas resistance exercise primarily stimulates protein synthesis post-exercise but also elevates breakdown.

If you do very intense cardio (like sprinting or heavy cycling), your body may break down muscle protein for fuel. If you lift weights, your body tries to build muscle after the workout, but it also breaks down protein at the same time. To grow, you need to eat enough protein to tip the balance toward building.

Endurance training activates specific signaling pathways, including MAPK and AMPK, which regulate the transcription of genes involved in metabolic adaptation and mitochondrial biogenesis.

Understanding that your body uses molecular signals (like AMPK and MAPK) to adapt to exercise reinforces the importance of consistent training. These signals trigger the building of mitochondria and enzymes that make you more efficient. You don't need to manipulate these signals directly; simply engaging in regular endurance exercise activates them naturally.

Higher consumption of whole grain foods is associated with a significantly lower risk of ischemic stroke in women, independent of known cardiovascular disease risk factors.

To lower your risk of ischemic stroke, aim to increase your daily intake of whole grains. Focus on foods like dark bread, whole grain breakfast cereals, popcorn, cooked oatmeal, wheat germ, brown rice, and bran. You do not need to reach extreme levels; even increasing your intake by just one serving per day (replacing refined grains) can provide significant protective benefits. This advice applies specifically to women, as this study focused on female nurses, but the biological mechanisms (fiber, antioxidants, minerals) are likely relevant broadly.

Consuming fried foods four or more times per week significantly amplifies the genetic risk for higher BMI and obesity, with the effect size nearly doubling in high-genetic-risk individuals compared to low-risk individuals.

If you have a family history of obesity or known genetic risk factors, limiting fried food consumption to less than once a week is crucial. For those with high genetic risk, eating fried foods four or more times a week can nearly double the negative impact on your BMI compared to low-risk individuals. For those with low genetic risk, the impact is smaller but still present.

Training twice every second day with low muscle glycogen during the second session enhances mitochondrial enzyme activity and fat oxidation markers compared to daily training with normal glycogen, but does not improve 1-hour endurance performance.

If you are an endurance athlete, splitting your daily training into two sessions on alternate days (training low on the second session) may boost your mitochondrial enzymes and fat-burning capacity. However, do not expect this to make you faster in a 1-hour race compared to training daily with normal glycogen. In fact, your high-intensity session quality may suffer initially. Prioritize recovery and glycogen replenishment if performance is your primary goal.

Consuming two or more cups of coffee per day is associated with a substantially lower risk of type 2 diabetes in younger and middle-aged women, an effect observed for both caffeinated and decaffeinated coffee.

If you are a woman between 26 and 46 years old, drinking 2-3 cups of coffee daily (caffeinated or decaf) is linked to a significantly lower risk of developing type 2 diabetes. You don't need to drink excessive amounts to see this benefit. If you are sensitive to caffeine or have sleep issues, choose decaffeinated coffee. Avoid adding large amounts of sugar or high-calorie creamers, as these can lead to weight gain, which increases diabetes risk. Focus on the coffee itself as a healthy habit.

Maximal muscle contractions (both shortening and lengthening) significantly increase muscle collagen protein synthesis, likely reflecting remodeling of the myofibrillar basement membrane.

Resistance training strengthens not just muscle fibers but also the connective tissue (collagen) that supports them. This structural remodeling helps the muscle handle higher forces and may reduce injury risk over time.