Browse the evidence

Warning labels significantly lower the perceived healthfulness and recommended consumption frequency of products high in energy, saturated fat, sugar, and sodium compared to GDA and traffic-light systems.

If you see a black warning label on a product, understand that it is a strong signal that the product is unhealthy. These labels are designed to make you think twice about how often you should eat it. Use this perception to limit your consumption of such items.

Warning labels and traffic-light systems are equally effective in helping consumers identify the most healthful product among a set of options, outperforming the GDA system.

When comparing products, look for warning labels or traffic-light systems. Both help you quickly spot the healthiest option, whereas GDA labels (numbers/percentages) are harder to use for comparison. Choose the product with the fewest warnings or the most green lights.

The mortality risk associated with low-carbohydrate and low-fat diets depends entirely on the quality of macronutrients consumed; diets emphasizing refined carbohydrates, saturated fats, and animal proteins increase mortality, whereas diets emphasizing whole grains, unsaturated fats, and plant proteins decrease mortality.

Do not follow a generic 'low-carb' or 'low-fat' plan if your goal is longevity. Instead, ensure your carbohydrate sources are whole grains and vegetables, and your fats are unsaturated (plant oils, nuts, fish). Avoid refined sugars, refined grains, and saturated animal fats. The quality of your macros matters more than the total percentage.

When training volume is NOT equated, higher training frequencies (3+ days/week) may lead to greater hypertrophy than lower frequencies (1-2 days/week), but the effect size is modest.

If you are not carefully tracking and matching your weekly sets, training a muscle group more frequently might naturally lead to higher total volume and thus more growth. However, this benefit is modest and likely just a byproduct of doing more work, not the frequency itself.

Hormonal Replacement Therapy (HRT) reduces visceral fat mass and improves insulin sensitivity in postmenopausal women, particularly when initiated during perimenopause or early menopause.

If you are going through menopause and concerned about weight gain, talk to your doctor about Hormonal Replacement Therapy (HRT). Starting HRT early (during perimenopause or shortly after menopause) can help reduce belly fat and improve how your body handles sugar. However, this should be combined with a healthy diet and exercise, and only done if your doctor determines it is safe for you.

The protective association between dietary fiber and metabolic syndrome is supported by mechanisms involving energy dilution, appetite suppression, and gut microbiota modulation.

Understanding how fiber works can help adherence: it fills you up (appetite suppression), dilutes calories (energy dilution), and feeds good gut bacteria (microbiota). These combined effects help manage weight and blood sugar, key components of metabolic syndrome.

Combining two specific night eating habits—dinner within 2 hours of bedtime and snacks after dinner (each occurring ≥3 times/week)—significantly increases the odds of developing obesity (BMI ≥25 kg/m²) and dyslipidemia in both men and women, with a supra-additive interaction effect observed in women.

If you frequently eat dinner within 2 hours of bed and snack after dinner (3+ times a week), you are at a significantly higher risk for obesity and high cholesterol, especially if you are a woman. To mitigate this, try to finish your last meal earlier in the evening and avoid late-night snacking. This is particularly important for women, where the combination of these habits showed a synergistic negative effect.

COVID-19 lockdown measures significantly worsened sleep quality in nursing students, primarily through increased sleep latency and reduced sleep efficiency, despite an increase in total time spent in bed.

If you are struggling with sleep during periods of restricted routine (like lockdowns or remote work), do not assume that staying in bed longer will help. The study shows that sleep quality often worsens despite increased time in bed due to delayed bedtimes and increased pre-sleep screen use. Focus on maintaining a consistent sleep-wake schedule and limiting digital device use before bed to improve sleep efficiency.

Specific demographic and lifestyle factors, including female gender, younger year of study (1st/2nd year), alcohol consumption, and living with family, are associated with greater sleep quality deterioration during lockdown.

If you are a female nursing student, in your first or second year, drink alcohol, or live with family, be aware that lockdown or routine changes may disproportionately impact your sleep. Monitor your sleep hygiene closely, particularly regarding alcohol consumption and pre-sleep routines, as these factors may exacerbate sleep quality issues during stressful periods.

Processing methods such as germination, boiling, and autoclaving significantly reduce antinutrients (phytates, oxalates, tannins) and improve protein digestibility in amaranth grain.

To get the most nutrition from amaranth, process it before eating. Germinate the grains at 30°C for 72 hours to boost protein digestibility, or boil/autoclave them to reduce antinutrients like phytates and oxalates. This makes the minerals and protein more available to your body.

Multi-frequency bioelectrical impedance analysis (MF-BIA) using an age-independent equation (incorporating impedance ratios and 1/Z50) accurately estimates appendicular skeletal muscle mass (ALM) comparable to DXA, whereas traditional age-dependent BIA equations significantly underestimate ALM in younger adults.

If you are tracking muscle mass changes, especially if you are young or comparing yourself to older data, standard consumer BIA scales may be misleading because they often use age-dependent formulas that underestimate muscle in younger people. For accurate research or clinical assessment, use a validated, age-independent MF-BIA equation or DXA. For general fitness, focus on strength and performance metrics rather than the absolute number from a consumer scale.

Sarcopenia cutoff values for appendicular lean mass index (ALM/Ht2) can be established using MF-BIA with a disclosed, age-independent equation, yielding values (6.8 kg/m2 for men, 5.7 kg/m2 for women) similar to those derived from DXA.

For clinical screening of sarcopenia in Japanese adults, MF-BIA can be used to identify at-risk individuals using cutoffs of 6.8 kg/m2 for men and 5.7 kg/m2 for women. These values are comparable to DXA-based standards, allowing for accessible screening without radiation exposure.

Higher socioeconomic status (SES) households exhibit a greater reduction in high-sugar beverage purchases in response to SSB tax increases compared to lower SES households.

Policymakers should investigate why low-SES households are less responsive to SSB taxes. If they are not reducing consumption, the tax may be purely regressive without the intended health benefit, requiring targeted interventions.

Endurance exercise training induces fiber-type-specific proteomic adaptations in human skeletal muscle, with slow-twitch fibers showing greater remodeling (237 proteins) than fast-twitch fibers (172 proteins), particularly in mitochondrial metabolism and calcium signaling.

Endurance training changes your muscles at a molecular level, but it doesn't do so uniformly. Slow-twitch fibers (used for endurance) remodel more extensively than fast-twitch fibers (used for speed/power). This means that to optimize overall fitness, you need to target different fiber types with different training modalities, as general endurance training primarily drives adaptations in slow-twitch fibers.

Aerobic exercise training increases skeletal muscle GLUT4 protein levels, which enhances insulin-stimulated muscle glucose disposal.

Regular aerobic exercise increases the amount of GLUT4, a protein that helps move glucose into your muscles. This makes your body more sensitive to insulin and helps manage blood sugar levels more effectively.

In Chinese adults with type 2 diabetes, higher levels of abdominal obesity indices (waist circumference, visceral adiposity index, lipid accumulation product, and Chinese visceral adiposity index) are significantly associated with an increased risk of incident cardiovascular events, with CVAI demonstrating the strongest predictive performance.

For people with type 2 diabetes, monitoring waist circumference or using calculated indices like CVAI is more critical for predicting heart disease risk than BMI alone. Reducing abdominal fat deposition is a key intervention strategy, particularly for those who are not overweight by BMI standards but carry visceral fat.

Sedentary behavior interventions lasting 2 weeks to 6 months in non-clinical adults produce small but statistically significant improvements in body weight, waist circumference, body fat percentage, systolic blood pressure, fasting insulin, and HDL cholesterol.

If you sit for long periods, try to break up your sitting time with standing or light walking. Even small reductions in total sitting time (e.g., 30-60 minutes less per day) can lead to small but real improvements in weight, waist size, blood pressure, and insulin sensitivity over a few months. You don't need intense exercise to get these specific metabolic benefits; simply replacing sitting with light activity is effective.

Daily oral supplementation with NRPT (250mg Nicotinamide Riboside + 50mg Pterostilbene) significantly increases whole blood NAD+ levels by approximately 40% in healthy adults aged 60-80 over an 8-week period.

Take 250mg of Nicotinamide Riboside combined with 50mg of Pterostilbene once daily with breakfast. This specific combination has been shown in a clinical trial of adults aged 60-80 to safely and sustainably raise NAD+ levels by about 40% over two months without serious side effects.

Ectopic fat accumulation in organs such as the heart, liver, and pancreas is a primary driver of cardiometabolic disease and insulin resistance, often posing a higher risk than classical metrics like BMI.

Focus on reducing visceral and ectopic fat through lifestyle changes rather than just tracking weight. Regular exercise and a balanced diet are effective at reducing hepatic and pancreatic fat, which improves metabolic health even if BMI changes slowly.

Low energy availability (LEA), defined as ≤30 kcal/kg LBM/day, acts as a potent disruptor of the endocrine milieu, triggering acute hormonal, metabolic, and physiological dysregulations in both females and males.

To maintain hormonal health, ensure your daily energy intake minus exercise expenditure, divided by your lean body mass, stays above 30 kcal/kg. This is critical for both men and women exercising regularly.

Intermittent fasting and time-restricted feeding activate AMPK and improve health outcomes by mimicking some benefits of caloric restriction without necessarily reducing total calories.

Try eating all your meals within a restricted window of time each day (e.g., 8 hours). This activates AMPK, a key energy sensor, which can improve health and function even if you don't count calories.

Adherence to a Mediterranean Diet (MeDi) slows cognitive decline and reduces the risk of developing Alzheimer's Disease (AD) and dementia in elderly populations.

Adopt a Mediterranean-style eating pattern as your long-term dietary baseline. Prioritize vegetables, fruits, legumes, whole grains, and nuts. Use olive oil as your primary cooking fat. Consume fish and poultry in moderation, and limit red meat. This pattern is associated with slower cognitive decline and a lower risk of Alzheimer's disease in older adults.

Repeated exercise-induced increases in arterial blood flow and shear stress directly cause structural remodeling (lumenal expansion) and functional improvements (endothelial NO-mediated dilation) in human conduit and resistance arteries.

To improve your blood vessel health, you need to generate high blood flow and shear stress. This happens during dynamic exercises like running, cycling, or swimming, and even resistance training if you use moderate weights with higher reps. Simply sitting still or doing very low-intensity movement won't trigger the structural changes in your arteries. Consistency is key: repeated bouts of exercise are required to remodel the vessel walls.

Radiologically determined sarcopenia significantly predicts increased post-operative morbidity and mortality following abdominal surgery.

If you are scheduled for abdominal surgery, ask if your pre-operative scans (CT/MRI) were used to assess your muscle mass. If sarcopenia is present, discuss a prehabilitation program focusing on resistance training and nutrition to potentially reduce your risk of complications and improve recovery.