Browse the evidence

High consumption of ultra-processed foods (defined as >4 servings daily) is independently associated with a 62% increased hazard of all-cause mortality compared to low consumption.

To lower your risk of early death, limit ultra-processed foods to less than 4 servings per day. Focus on reducing items like sugary drinks, processed meats, and packaged snacks, as these contribute most to the risk. Prioritize whole or minimally processed foods.

Each additional daily serving of ultra-processed food is associated with an 18% relative increase in all-cause mortality risk.

Track your daily servings of ultra-processed foods. Each extra serving adds 18% to your mortality risk. Reducing even one serving per day can significantly lower your long-term health risk.

Endurance training can induce muscle hypertrophy (7-11% increase in mass) in the quadriceps, particularly in sedentary individuals or those with limited exercise experience, through mechanisms independent of mTORC1.

If you are new to exercise or sedentary, starting an endurance program like cycling will likely build muscle in your legs, not just burn calories. This hypertrophy is comparable to what you might see from resistance training over the same period.

Concurrent training (combining endurance and strength) can impair strength adaptations and muscle hypertrophy, potentially due to a significant caloric deficit and negative energy balance rather than just molecular interference (AMPK/mTORC1).

If you combine cardio and weights, watch your calorie intake. The 'interference' effect is often due to not eating enough to support muscle growth, not just molecular conflicts. Ensure you are in energy balance or a slight surplus to maintain strength gains.

Sleep deprivation (defined as <6-7 hours/night or acute/chronic restriction) increases the risk of infectious diseases by impairing innate and adaptive immune responses, including reduced T-cell efficacy and antibody production.

Prioritize getting 7-8 hours of sleep nightly to maintain robust immune function. Chronic sleep restriction (<6 hours) significantly impairs your body's ability to fight off viruses and bacteria, making you more susceptible to respiratory infections and reducing the effectiveness of vaccines. Treat sleep as a critical health intervention, not optional downtime.

Walking as a mode of active commuting is associated with lower risk of cardiovascular disease (CVD) incidence and mortality, but not all-cause mortality or cancer outcomes, compared to non-active commuting.

Walking to work is a great way to protect your heart. This study links walking to lower heart disease risk. However, it didn't significantly lower death rates or cancer risk like cycling did. If you can't cycle, walking is still a valuable health habit, especially if you walk longer distances.

Mixed-mode commuting that includes cycling is associated with lower risks of all-cause mortality, cancer incidence, and cancer mortality compared to non-active commuting.

If you can't cycle the whole way, try mixing it in. This study links mixed-mode commuting (driving + cycling part of the way) to lower death and cancer risks. It didn't help as much as pure cycling, but it's still better than driving alone. Walking as part of a mixed commute didn't show benefits.

The health effects of saturated fat are dependent on the food matrix and the overall dietary pattern, particularly carbohydrate intake, such that high saturated fat intake combined with low carbohydrate intake does not increase circulating saturated fatty acids or CVD risk.

If you are insulin resistant or consuming a high-carbohydrate diet, high saturated fat intake may be less beneficial. However, if you reduce carbohydrates, your body will oxidize saturated fat for energy, leading to lower circulating levels of harmful lipids. Focus on the balance of macronutrients rather than just cutting saturated fat.

Hydroxytyrosol (HTyr) and its derivatives provide cardioprotective benefits by protecting LDL from oxidation, with a specific health claim established by the European Food Safety Authority (EFSA) requiring a daily intake of 20g of olive oil containing at least 5mg of HTyr and derivatives.

To get the heart-protective benefits of hydroxytyrosol, incorporate high-quality extra virgin olive oil into your daily diet. The European Food Safety Authority suggests that 20 grams of olive oil containing at least 5mg of hydroxytyrosol and its derivatives provides these benefits. This is easily achieved by using EVOO as your primary cooking fat and dressing.

Self-reported sleep duration exceeding 8 hours per night is associated with a moderate increase in all-cause mortality, with risk ratios rising significantly for 9, 10, and 11 hours of sleep.

Aim for 7 to 8 hours of sleep. While sleeping less than 7 hours showed no significant increased mortality risk in this specific meta-analysis, sleeping more than 8 hours was associated with a moderate but significant increase in all-cause mortality. If you consistently require more than 8 hours of sleep, consider it a marker for elevated cardiovascular risk and consult a healthcare provider to rule out underlying conditions.

Subjective poor sleep quality is associated with a significant increase in coronary heart disease (CHD) risk, but not with all-cause mortality or other cardiovascular outcomes.

Focus on sleep quality, not just duration. If you frequently report poor sleep quality (restless, disturbed nights), you have a 44% higher risk of coronary heart disease. Address sleep disturbances through sleep hygiene or medical evaluation, as this is a specific risk factor for heart disease.

Extreme sleep durations (≤4 hours or ≥10 hours per night) are associated with significantly faster rates of global cognitive decline in older adults compared to a reference duration of 7 hours per night.

If you are over 45, aim for approximately 7 hours of sleep per night. Both sleeping 4 hours or less and 10 hours or more are associated with faster cognitive decline. If you consistently sleep outside this range, consider monitoring your cognitive health and consulting a healthcare provider to rule out underlying issues like sleep apnea (for long sleepers) or insomnia (for short sleepers).

Non-alcoholic fatty liver disease (NAFLD) is primarily driven by caloric excess and sedentary lifestyle, with insulin resistance serving as the central pathophysiological mechanism linking metabolic dysfunction to hepatic fat storage and subsequent fibrosis.

NAFLD is fundamentally a disease of energy imbalance. Even without alcohol, consuming more calories than you burn leads to fat storage in the liver, driven by insulin resistance. The most effective way to address this is through lifestyle changes that reduce caloric intake and increase physical activity, thereby improving insulin sensitivity and reducing liver fat.

Alcohol consumption is a direct cause of liver disease, with risk increasing linearly with dose, and binge drinking independently increases the risk of alcoholic liver disease (ALD) regardless of average daily consumption.

Alcohol causes liver damage in a dose-dependent manner. There is no universally 'safe' limit, but risk increases with higher doses and binge patterns. Women are particularly susceptible to lower thresholds of damage. Reducing alcohol intake and avoiding binge drinking are key strategies to prevent alcoholic liver disease.

Insulin resistance (IR) is a central pathophysiological mechanism that drives the development and progression of multiple metabolic diseases, including type 2 diabetes, cardiovascular disease, nonalcoholic fatty liver disease (NAFLD), and certain cancers.

Insulin resistance is not just a blood sugar issue; it is a systemic driver of chronic disease. Addressing it through lifestyle changes (exercise, diet) or medications (like metformin or GLP-1 agonists) can potentially improve multiple health outcomes at once, including heart health, liver health, and diabetes management. Prioritizing insulin sensitivity is a high-leverage strategy for overall metabolic health.

Obesity, particularly central/visceral obesity, is a primary cause of insulin resistance through mechanisms involving increased free fatty acids, chronic inflammation, and adipokine dysregulation.

Losing even a modest amount of weight (e.g., 10% of body weight) can significantly improve insulin sensitivity, especially if the weight is visceral fat. Focus on reducing abdominal fat through caloric deficit and exercise, as this directly addresses the root cause of obesity-induced insulin resistance.

Chronic low-grade inflammation, driven by obesity and characterized by elevated pro-inflammatory cytokines (TNF-alpha, IL-6, CRP), directly interferes with insulin signaling pathways, contributing to insulin resistance.

Chronic low-grade inflammation, common in obesity, disrupts insulin signaling. Anti-inflammatory lifestyle strategies (e.g., Mediterranean diet, regular exercise, stress management) can help reduce this inflammation and improve insulin sensitivity.

Habitually low magnesium intake induces biochemical pathway changes that increase the risk of chronic degenerative diseases, including type 2 diabetes, cardiovascular disease, and neurological disorders.

Ensure adequate magnesium intake through diet or supplementation, as deficiency is linked to chronic diseases. Standard blood tests may not detect deficiency, so focus on dietary sources and recommended intake levels rather than relying solely on serum magnesium tests.

Magnesium deficiency impairs insulin sensitivity and glucose metabolism by affecting the tyrosine kinase activity of the insulin receptor and glycolytic enzymes.

Maintaining adequate magnesium levels supports proper insulin receptor function and glucose metabolism, potentially reducing the risk of type 2 diabetes.

Magnesium acts as a physiological calcium antagonist in the cardiovascular system, inhibiting L-type calcium channels and promoting vasodilation, which may help regulate blood pressure.

Adequate magnesium intake supports cardiovascular health by helping to regulate blood pressure through calcium channel inhibition and nitric oxide production.

Obesity and diabetes are high-risk factors for severe coronavirus disease 2019 (Covid-19), leading to increased morbidity, mortality, and progression to respiratory failure.

If you have obesity or diabetes, you are at a significantly higher risk for severe Covid-19. This is due to factors like chronic inflammation, immune dysfunction, and lung mechanics. Ensure you are up to date on vaccinations and take precautions to avoid infection.

Food intake stimulates insulin release and mTOR-dependent protein synthesis in muscle, while excess amino acids are oxidized leading to increased urea production.

After eating, your body uses amino acids to build muscle (via mTOR and insulin) and oxidizes any excess for energy, producing urea. This highlights that protein has a limit to how much can be used for synthesis at once.

Regular consumption of mango fruit provides significant dietary sources of Vitamin C and Vitamin A, with specific cultivars like Ataulfo offering exceptionally high Vitamin C levels (up to 125.4 mg/100g) and sufficient Vitamin A to meet substantial daily requirements.

Include mangoes in your diet to boost Vitamin C and A intake. Cultivars like Ataulfo are particularly rich in Vitamin C. A single medium-sized mango can provide a significant portion of your daily Vitamin A needs, making it a valuable food for overall health, especially if you live in an area where these vitamins are scarce.

Supplementation with glycine and cysteine increases glutathione (GSH) concentration and biosynthesis rates, leading to a significant decrease in oxidative stress biomarkers in the blood plasma of elderly persons.

Supplementing with glycine and cysteine can boost glutathione levels and reduce oxidative stress in older adults. This suggests that targeted amino acid supplementation may be a useful strategy for supporting antioxidant defenses in aging.