Browse the evidence

The nutritional and sensory profile of kefir is significantly influenced by the type of milk used (cow, camel, goat, buffalo) and the fermentation process.

Choose your kefir based on your preferences and dietary needs, as different milk bases offer different nutrient profiles and flavors.

Higher body mass index (BMI) is strongly and linearly associated with increased prevalence and severity of hypertension, independent of age, gender, and other cardiovascular risk factors.

Maintaining a healthy body weight is one of the most effective ways to prevent high blood pressure. This study shows that as BMI increases, the risk of hypertension rises significantly, even after accounting for age and other health factors. For public health, using BMI as a simple screening tool is recommended to identify those at higher risk.

Training with low carbohydrate availability (train-low) modulates molecular cell signaling pathways to promote oxidative phenotype adaptations, potentially enhancing training adaptations at the cost of immediate performance.

Consider occasionally training with low carbohydrate availability (e.g., fasted or after a low-CHO meal) to trigger specific molecular signals that may enhance your body's oxidative capacity and mitochondrial function. This is an adaptation strategy, not a performance strategy, so expect lower intensity during these specific sessions.

Higher circulating levels of Docosahexaenoic Acid (DHA) and total omega-3 fatty acids are significantly associated with increased gut microbiome alpha diversity and a higher abundance of Lachnospiraceae bacteria in middle-aged and elderly women.

For middle-aged and elderly women, maintaining higher levels of DHA (via diet or supplementation) is associated with a more diverse gut microbiome, specifically an increase in Lachnospiraceae bacteria. This association holds true even when accounting for dietary fiber intake, suggesting that omega-3s play a distinct role in gut health beyond just feeding fiber-fermenting bacteria.

Sleep restriction during a caloric deficit reduces fat loss and increases fat-free mass loss compared to adequate sleep, making weight loss less effective.

If you are dieting, ensure you are getting enough sleep. Even if your total weight loss looks similar, sleeping less causes your body to break down more muscle and save less fat. This makes it harder to keep the weight off and lowers your metabolic rate. Aim for 7-8 hours of sleep to maximize fat loss.

The ACTN3 missense variant rs2229456 (p.Glu635Ala) is associated with higher odds of engaging in moderate-to-vigorous physical activity (MVPA) and lower leisure screen time (LST), potentially by increasing muscle flexibility and reducing susceptibility to exercise-induced muscle damage.

This finding highlights a specific genetic variant (ACTN3 p.Glu635Ala) that may make some individuals more prone to physical activity and less prone to muscle damage. However, this is just one piece of the puzzle; lifestyle choices remain the primary driver of health outcomes.

High fructose intake is a significant independent environmental risk factor for NAFLD in lean, non-obese individuals, particularly children and adolescents.

If you are lean and have fatty liver, reducing sugary drinks and high-fructose foods is a critical first step. This is especially important for children and adolescents, where fructose intake was the only independent predictor of NAFLD in one study.

Low energy availability (EA), defined as dietary energy intake minus exercise energy expenditure normalized to fat-free mass, is strongly associated with increased risk of menstrual dysfunction, poor bone health, metabolic issues, haematological detriments, psychological disorders, cardiovascular impairment, and gastrointestinal dysfunction in female athletes.

If you are a female athlete, getting enough energy is critical for your overall health and performance. Low energy availability is linked to serious health issues like menstrual dysfunction, poor bone health, metabolic problems, and psychological disorders. It also hurts your performance by decreasing your endurance, coordination, and concentration. Don't rely on BMI to judge your fueling; use screening tools like the LEAF-Q or consult a sports medicine professional if you suspect you are not eating enough to support your activity level.

Low energy availability is associated with negative performance effects including decreased training response, impaired judgement, decreased coordination, decreased concentration, irritability, depression, and decreased endurance performance in female athletes.

If you are a female athlete, getting enough energy is critical for your overall health and performance. Low energy availability is linked to serious health issues like menstrual dysfunction, poor bone health, metabolic problems, and psychological disorders. It also hurts your performance by decreasing your endurance, coordination, and concentration. Don't rely on BMI to judge your fueling; use screening tools like the LEAF-Q or consult a sports medicine professional if you suspect you are not eating enough to support your activity level.

Weight loss interventions, including caloric restriction and bariatric surgery, reduce levels of DNA damage and improve genomic stability in obese individuals.

If you are obese, losing weight is one of the most effective ways to protect your cells from DNA damage. Whether through dietary changes or surgery, reducing body fat lowers the inflammation and oxidative stress that harm your DNA. This benefit occurs even if you don't reach a 'normal' BMI, as any reduction in obesity-related stress improves genome stability.

Maximal exercise testing protocols yield more significant predictive results for cardiovascular events and all-cause mortality than submaximal protocols when measuring heart rate recovery.

If you want to use HRR for accurate risk assessment, you must push to maximal effort during the exercise test. Submaximal efforts may not reveal the full prognostic value of your heart rate recovery.

Regular exercise reduces oxidatively modified proteins in the brain and improves cognitive function through PTM processes involving histone regulation.

Regular physical activity helps protect the brain from age-related damage. It works by reducing oxidized proteins and improving how genes are regulated in the brain (via histone PTMs). This leads to better cognitive function as you age. Incorporating consistent movement into your routine is a key strategy for maintaining brain health.

Consuming potatoes, particularly when prepared to maximize resistant starch (e.g., cooled after cooking), supports gut health and satiety through the fermentation of resistant starch into short-chain fatty acids, without negatively impacting weight management or blood pressure when integrated into a balanced diet.

Eat potatoes as part of a balanced diet. To maximize health benefits, try boiling or baking them and then cooling them before eating to increase resistant starch, which feeds gut bacteria and helps you feel full. You don't need to peel them to get most nutrients, but keeping the skin adds extra fiber. If you are watching your weight, focus on total calories and preparation method (avoid frying) rather than avoiding potatoes entirely.

Excessively frequent (6+ times/week) and intense physical activity is a risk factor for insomnia and difficulty initiating sleep in some populations.

If you exercise 6+ times a week at high intensity, monitor your sleep. If you experience trouble falling asleep, consider reducing frequency or intensity. Leisure-time walking does not show this negative association.

Metformin reduces visceral fat mass and improves energy metabolism by upregulating adaptive thermogenesis, specifically through the upregulation of UCP-1 in brown adipose tissue and UCP-3 in skeletal muscle.

If you have Type 2 Diabetes or significant visceral fat, metformin (typically 1500mg/day) may help reduce that stubborn belly fat by boosting your body's heat production (thermogenesis). However, it is not a magic weight-loss pill for everyone, and its effectiveness varies. It works best when combined with lifestyle changes.

Vegan athletes may benefit more from creatine and beta-alanine supplementation than omnivorous athletes due to lower baseline muscle stores of creatine and carnosine.

If you are vegan, consider supplementing with creatine monohydrate and beta-alanine. Because you do not consume meat, your baseline muscle stores of creatine and carnosine are likely lower, meaning you may see greater performance benefits from supplementation compared to meat-eaters.

Access to nature, green spaces, and specific neighborhood infrastructure (sidewalks, parks) positively correlates with maintained or increased physical activity during the pandemic, particularly for adults.

If you live in an area with good access to parks, trails, or safe sidewalks, you are more likely to maintain physical activity during restrictions. Urban planners and individuals should prioritize utilizing these available resources to counteract the general trend of reduced activity.

Intervention with intermittent fasting reduces lipotoxicity in MASLD patients more effectively than switching to a normal diet.

If you have MASLD, try intermittent fasting. According to the review, it reduces liver fat toxicity better than just switching to a normal diet. You don't need to know the exact hours, but the pattern of fasting helps your liver recover.

Omega-3 fatty acids (specifically fish oils) may be effective in treating MASLD, potentially synergistically with chicory acid.

Omega-3 fatty acids from fish oil may help reduce liver fat in MASLD. They are recommended in guidelines, though they are not a standalone cure.

Gut microbiota composition may influence individual responsiveness to vitamin D supplementation, with non-responders showing specific depletion of Bacteroides acidifaciens.

If you take vitamin D and your levels don't rise, your gut bacteria might be the reason. Specifically, low levels of Bacteroides acidifaciens might predict poor response. This is an emerging area of research.

University students, particularly those in non-health majors, exhibit inadequate adherence to physical activity and healthy eating guidelines, with high prevalence of obesity and sedentary behavior.

Knowing healthy habits doesn't guarantee you will practice them. For students, especially in non-health fields, active interventions are needed to bridge the gap between knowledge and action, focusing on environmental changes and time management rather than just education.

Male university students are significantly more likely to engage in physical activity than female students, while female students show greater concern for diet management.

Interventions should be gender-specific. For males, focus on diet quality as they are already active. For females, address cultural and environmental barriers to exercise rather than just providing education.

The Portfolio Dietary Pattern significantly reduces estimated 10-year coronary heart disease (CHD) risk by approximately 13% compared to a standard NCEP Step II diet.

Following the Portfolio Dietary Pattern not only lowers cholesterol but also reduces your estimated 10-year risk of having a coronary heart disease event by about 13%. This benefit is calculated based on improvements in cholesterol, blood pressure, and inflammation markers achieved by consuming specific plant-based foods daily alongside a standard low-saturated-fat diet.

The Portfolio Dietary Pattern significantly reduces systolic and diastolic blood pressure, as well as C-reactive protein (inflammation), compared to a standard NCEP Step II diet.

In addition to lowering cholesterol, the Portfolio Dietary Pattern helps reduce blood pressure and inflammation (measured by CRP). By consuming specific plant-based foods daily, you can achieve modest but significant improvements in these cardiovascular risk factors compared to a standard low-saturated-fat diet.