Browse the evidence

The presence of health claims on food packaging creates a 'halo effect' that increases perceived product healthiness and purchase intent, but simultaneously discourages consumers from reading detailed nutrition information on the back of the package.

If you see a health claim on the front of a package (e.g., 'Heart Healthy'), expect that it will make the product seem healthier and more appealing. However, do not stop there. Turn the package over and read the Nutrition Facts panel. The claim may distract you from high levels of sugar, sodium, or saturated fat that are not addressed by the claim. Use the claim as a filter, not a final verdict.

Consumers generally prefer short, succinct health claims over long, complex, or scientifically worded ones, and they often do not distinguish between nutrient content, structure-function, and disease risk claims.

When shopping, look for short, clear health claims on the front of the package. These are more likely to be understood and trusted. However, be aware that you might be conflating a simple nutrient claim (like 'high fiber') with a major health benefit. To get the full picture, read the nutrition facts panel on the back, even if the front claim is short and appealing.

Calibration equations that incorporate body mass index, age, and ethnicity into food frequency questionnaire, 4-day food record, or 24-hour dietary recall data substantially improve the accuracy of energy and protein consumption estimates compared to using self-report data alone.

If you are using self-reported diet data (like food diaries or questionnaires) to study health outcomes, do not trust the raw numbers. They systematically underestimate intake, especially in higher BMI individuals. You must apply calibration equations that adjust for BMI, age, and ethnicity to get accurate energy and protein estimates. Without this step, your study results will likely be biased and misleading.

Athletes participating in sports that emphasize leanness, weight classes, or aesthetic evaluation have a significantly higher prevalence of eating disorders and disordered eating behaviors compared to non-athletes and athletes in other sports.

If you compete in a sport where judges or opponents value low body weight (gymnastics, rowing, wrestling, distance running), your risk for developing an eating disorder is significantly higher than the general population. Proactively screen for disordered behaviors, not just weight. Focus on performance health and fueling rather than just leanness.

The DSM-5 diagnostic criteria for Anorexia Nervosa, specifically the removal of amenorrhea as a required criterion and the shift from '85% of ideal body weight' to 'significantly low weight', improve diagnostic accuracy for athletes, particularly females, males, and adolescents.

Do not use BMI or menstrual status to rule out Anorexia Nervosa in athletes. If an athlete exhibits significantly low weight, intense fear of weight gain, and body image disturbance, they may have AN even if their periods are regular or their BMI is 'normal'. Use the DSM-5 criteria which focus on health impact rather than rigid weight numbers.

A semi-quantitative food frequency questionnaire (FFQ) with 190 items provides a reproducible and reasonably valid measure of long-term dietary intake for epidemiological studies in Greek populations.

For large-scale health studies, a well-designed food frequency questionnaire is a valid and reliable tool for assessing long-term dietary habits, especially when validated against biochemical markers. It is more practical and less burdensome than daily diet records for large cohorts.

Urban residence, higher socioeconomic status, and female sex are significantly associated with increased prevalence of overweight, obesity, hypertension, and diabetes in sub-Saharan African populations, contradicting the traditional view that these conditions are primarily diseases of affluence in high-income countries.

If you live in an urbanizing area, your risk for obesity, high blood pressure, and diabetes is significantly higher than if you lived in a rural subsistence farming environment, regardless of your income level. Focus on maintaining physical activity and monitoring blood pressure and blood sugar, as these conditions are emerging rapidly in these populations.

Urban women face the highest risk of multimorbidity (having two or more of hypertension, diabetes, or obesity) compared to rural women and men in either setting.

Urban women should be particularly vigilant about managing multiple health markers simultaneously. Because the risk of having high blood pressure, high blood sugar, and excess weight together is highest for this group, regular screening for all three is essential.

A significant proportion of individuals with diagnosed hypertension or diabetes in this population have poorly controlled conditions, with less than half of those on medication achieving target blood glucose or blood pressure levels.

Being on medication for high blood pressure or diabetes does not guarantee your numbers are under control. If you are on medication, you need regular monitoring to ensure it is working, as a significant number of people do not reach target levels.

The vascular benefits of exercise, specifically eNOS upregulation, are transient and depend on baseline activity levels; sedentary individuals see significant gains, while active individuals see minimal changes.

If you are already active, you likely have optimal vascular health; focus on consistency. If you are sedentary, starting exercise will yield significant vascular improvements.

Adding daily, tailored feedback messages to electronic self-monitoring (PDA+FB) results in a higher proportion of participants achieving clinically significant weight loss (≥5%) compared to paper records or PDA alone, although mean weight loss differences were not statistically significant.

If you use a digital tracker, enable any available feedback or coaching features. This study suggests that while just tracking helps you stay consistent, adding daily, personalized feedback messages significantly increases your chances of losing at least 5% of your body weight compared to tracking alone or using paper diaries.

Structured physical activity counseling interventions (assistance and counseling) significantly improve cardiorespiratory fitness (VO2max) in inactive women compared to standard physician advice, but do not improve fitness in inactive men.

If you are a woman, structured counseling from a health educator (even with just ~3 hours of contact over 2 years) can significantly boost your heart health compared to just being told to exercise by your doctor. If you are a man, basic advice might be just as effective as intensive counseling for improving fitness, so focus on the activity itself rather than the counseling format.

High trait sleep reactivity acts as a diathesis that significantly increases the risk of developing insomnia when exposed to naturalistic stress, specifically by amplifying the impact of stress-induced cognitive intrusion.

If you are prone to sleep problems, your risk of developing chronic insomnia is significantly higher if you tend to ruminate on stressors (cognitive intrusion). Focus on managing your cognitive response to stress (e.g., through CBT-I techniques) rather than just trying to avoid stressors, as your reaction to stress is the primary driver of sleep disruption.

Trait sleep reactivity is a significant independent risk factor for the development of depression, mediated by the onset of insomnia.

Addressing sleep reactivity and preventing insomnia may be a critical strategy for reducing the risk of developing depression, especially in those prone to stress-induced sleep disruption.

Among individual lifestyle factors, smoking cessation provides the largest survival benefit and life expectancy gain for individuals with multimorbidity, outweighing the benefits of physical activity, diet, or alcohol moderation.

If you smoke, quitting is the most powerful single action you can take to extend your life, especially if you have chronic conditions. It can add nearly 5-6 years to your life expectancy, far more than diet or exercise changes alone.

High levels of objectively measured sedentary time are associated with significantly increased all-cause mortality risk, independent of moderate-to-vigorous physical activity (MVPA).

If you are over 50, simply exercising for an hour a day may not be enough to eliminate the mortality risks associated with sitting for the rest of the day. You should actively break up long periods of sitting, regardless of your exercise routine, as prolonged sedentary time independently increases the risk of death.

Weightlifting training improves muscle strength, exercise endurance, and subjective mastery in patients with chronic airflow limitation, despite failing to improve maximum aerobic capacity or pulmonary function.

If you have severe COPD, standard aerobic exercise might be too breathless to sustain. Try weightlifting instead. Lift weights 3 times a week, starting light (50% of your max lift) and getting heavier (up to 85%) over 8 weeks. Focus on arms and legs. You likely won't run further or breathe better on paper, but you will get stronger, last longer during daily tasks, and feel more in control of your life.

Management of insulin resistance through lifestyle interventions (diet and exercise) and pharmacological agents is effective, although no medication is currently specifically approved solely for treating insulin resistance.

Focus on sustainable lifestyle changes: eat a balanced diet and exercise regularly. These are the proven ways to manage insulin resistance. Do not wait for a specific 'IR medication' as none exists; use existing tools like Metformin only if prescribed for diabetes or other conditions.

Individuals meeting clinical criteria for 'food addiction' exhibit significantly higher obesity severity, including greater body weight, BMI, and body fat percentage, compared to non-addicted controls.

If you struggle with compulsive eating and loss of control, this behavior is a significant driver of obesity severity, not just a minor habit. Addressing the behavioral aspects of food addiction (e.g., through specialized psychological support or behavioral therapy) may be necessary to reduce body fat and BMI, as standard caloric restriction alone may not address the underlying compulsive intake.

Intentional weight loss in the elderly yields clinical benefits and quality of life improvements, whereas unintentional weight loss is associated with increased mortality and poor prognosis.

If you are older and losing weight without trying, see a doctor immediately. This is often a sign of illness or muscle loss, not health. If you are choosing to lose weight, do it intentionally through diet and exercise to gain health benefits.

Meal timing and frequency are largely determined by environmental cues, learning, and opportunity rather than immediate physiological energy deficits.

Your meal times are often habits and environmental cues, not just hunger. You can learn to associate specific times or contexts with eating. Being aware of these learned cues (like time of day or social settings) can help you distinguish between true physiological hunger and habitual eating triggers.

Multidisciplinary nutritional care reduces nutritional deterioration and increases community discharge rates in hip fracture patients.

Hip fracture patients benefit from a team approach to nutrition, including a dietician who monitors their energy needs regularly. This helps them leave the hospital directly to their community rather than to other facilities.

Perceived weight discrimination is associated with a significantly increased risk of becoming obese (BMI ≥30) and remaining obese over a four-year longitudinal period in adults aged 50 and older.

If you are experiencing weight-based discrimination, do not blame yourself for struggling with weight management. The stress of discrimination triggers physiological and behavioral responses (like stress-eating and avoiding exercise) that promote weight gain. This is a documented health risk factor, not a personal failure of willpower. Focus on stress management and supportive environments rather than expecting stigma to drive change.

Emotional eating mediates the association between depression and long-term weight gain (BMI and waist circumference), with this effect being significantly moderated by sleep duration such that short sleepers (<7h) are particularly vulnerable.

If you struggle with emotional eating and have depressive symptoms, prioritize getting 7+ hours of sleep. Short sleep duration significantly amplifies the link between your emotions and your weight gain. Managing sleep may be as critical as managing stress or diet for this specific group.