Browse the evidence

Fermented dairy products (cheese, yogurt) and probiotics are associated with a lower risk of cardiovascular disease (CVD) and type 2 diabetes, independent of saturated fat content, whereas non-fermented low-fat milk may be associated with higher diabetes risk.

Prioritize fermented dairy products like cheese and yogurt over non-fermented low-fat milk for metabolic health. These foods are associated with a lower risk of cardiovascular disease and type 2 diabetes. The fermentation process and specific fatty acid profiles in dairy appear to offer protective benefits that contradict the general fear of saturated fats.

Sustainable, high-quality weight loss requires combining appetite suppression with moderate increases in energy expenditure and preservation of lean mass, rather than focusing solely on absolute weight reduction.

To lose weight sustainably, do not just focus on eating less. Prioritize strategies that protect your muscle mass (like resistance training and adequate protein) and support your metabolism. Modern treatments should ideally combine appetite control with mechanisms that prevent metabolic slowdown. The goal is to lose fat while keeping your lean tissue, which helps you maintain the weight loss long-term.

Replacing saturated fatty acids with omega-6 polyunsaturated fatty acids lowers LDL cholesterol and non-HDL cholesterol concentrations in a dose-dependent manner.

Incorporating omega-6 rich oils (like corn, soybean, or sunflower oil) into your diet in place of saturated fats (like butter or lard) will lower your LDL ('bad') cholesterol. The more you replace saturated fat with these oils, the greater the reduction in LDL cholesterol.

Higher habitual dietary selenium intake, as measured by toenail selenium levels, is associated with a lower incidence of type 2 diabetes in generally healthy U.S. adults.

Focus on maintaining adequate selenium levels through a balanced diet rather than high-dose supplements. This study suggests that higher natural selenium intake (reflected by toenail levels) is linked to a lower risk of developing type 2 diabetes. However, do not start high-dose selenium supplements, as clinical trials show they do not reduce diabetes risk and may have adverse effects. Consult your doctor for personalized advice, especially if you have existing health conditions.

Leucine supplementation can rescue muscle protein synthesis in older adults when protein doses are sub-optimal, but provides no additional benefit if the total protein dose is already sufficient (>35g).

If you can't eat a large meal (30g+ protein), adding a leucine-rich source (like whey or a leucine supplement) can help trigger muscle building. But if you are already eating a large, high-protein meal, you don't need extra leucine.

Obese individuals classified as metabolically healthy (MHO) exhibit lower visceral adipose tissue (vAT) and smaller adipocyte size compared to metabolically unhealthy obese (MUO) individuals, which is associated with lower systemic inflammation and preserved insulin sensitivity.

Your waistline and body composition matter more than your total weight. Focus on reducing visceral fat through lifestyle changes rather than just chasing a number on the scale. Regular monitoring of metabolic markers (blood pressure, lipids, glucose) is essential, as 'healthy obesity' is not a permanent state and can deteriorate over time.

Testosterone therapy in transgender men leads to increased lean mass and visceral adiposity, while estrogen therapy in transgender women leads to decreased lean mass and increased fat mass, confirming the causal role of sex steroids in body composition.

If you are undergoing gender-affirming hormone therapy, expect your body composition to shift towards your new hormonal profile. Trans men will likely gain muscle and visceral fat; trans women will likely lose muscle and gain subcutaneous fat. This is a direct result of the hormones, not lifestyle failure.

Menopause triggers a shift in fat distribution from protective subcutaneous tissue to harmful visceral adipose tissue due to declining estrogen levels, increasing the risk of metabolic disease.

As you approach menopause, your body will naturally start storing more fat around your organs (visceral) rather than your hips and thighs. This increases metabolic risk. Hormone replacement therapy can partially reverse this shift, but lifestyle management of visceral fat becomes critical.

GLP-1 receptor agonists (specifically liraglutide 3.0 mg) produce clinically significant weight loss in overweight or obese individuals through reduced appetite and energy intake, rather than increased energy expenditure.

If you are overweight or obese, GLP-1 receptor agonists like liraglutide (3.0 mg daily) are a clinically proven tool for weight loss. They work by making you feel fuller and reducing your desire to eat, not by speeding up your metabolism. Treatment involves starting at a low dose and slowly increasing it to manage side effects. This intervention is most effective when combined with your usual lifestyle habits, though significant weight loss occurs even without strict diet changes in some studies.

Whey protein supplementation (Concentrate and Hydrolysate) increases skeletal muscle satellite cell counts compared to baseline, whereas soy and leucine do not, suggesting a potential mechanism for long-term adaptation despite no immediate hypertrophy benefit.

While whey, soy, and leucine all support similar muscle size gains in beginners, whey might offer a unique benefit by increasing satellite cells (muscle repair cells). This might not show up in 12 weeks, but could be beneficial for long-term training. If you prefer whey, this is a potential bonus, but it's not a requirement for growth.

Higher serial circulating levels of long-chain omega-3 polyunsaturated fatty acids (specifically eicosapentaenoic acid and docosapentaenoic acid) are associated with a lower risk of unhealthy ageing in older adults.

To support healthy ageing, older adults should aim for higher levels of long-chain omega-3s, specifically eicosapentaenoic acid (EPA) and docosapentaenoic acid (DPA). This is best achieved through dietary consumption of seafood rather than relying solely on plant-based sources (ALA) or DHA supplements, as the study found no significant benefit from ALA or DHA alone in the primary analysis.

Gluten-free diets are not nutritionally superior to gluten-containing diets and are often inferior in key nutrients including fiber, folate, protein, magnesium, potassium, and vitamin E, while providing higher energy and fat intake.

If you are not celiac, switching to a gluten-free diet is unlikely to improve your nutrition and may actually reduce your intake of fiber, protein, and key vitamins like folate and magnesium. Focus on whole, unprocessed foods regardless of gluten content rather than seeking out 'gluten-free' labeled products which may be nutritionally inferior.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is bidirectionally associated with the development and progression of cardiovascular, renal, and metabolic disorders, acting as both a driver and consequence of systemic cardiometabolic dysfunction.

If you have fatty liver (MASLD), it is not just a liver issue; it significantly increases your risk for heart disease, kidney disease, and diabetes. You need to manage your metabolic health (weight, blood sugar, blood pressure) comprehensively to protect your heart and kidneys, not just your liver.

SGLT2 inhibitors, GLP-1 receptor agonists, and finerenone demonstrate benefits across multiple cardiometabolic conditions, improving clinical outcomes in patients with MASLD, CKD, and CVD.

Current medications like SGLT2 inhibitors, GLP-1 agonists, and finerenone are effective for treating multiple aspects of cardiometabolic disease simultaneously. Discuss these options with your doctor if you have liver, kidney, or heart issues.

Adherence to guideline-recommended physical activity (150 min moderate or 75 min vigorous aerobic activity per week) is strongly associated with higher cardiorespiratory fitness (VO2peak) in patients with Type 2 Diabetes Mellitus, yet less than half of this high-risk population achieves these guidelines.

For patients with Type 2 Diabetes, simply moving around (light activity) is not enough to improve heart health or fitness. You must engage in at least 150 minutes of moderate-intensity aerobic activity (like brisk walking) or 75 minutes of vigorous activity (like jogging) per week. Most patients fail to do this, leading to low fitness levels. Focus on intensity, not just total movement.

Higher plasma levels of Trimethylamine N-oxide (TMAO) are associated with increased risk of all-cause mortality, cardiovascular disease (CVD) mortality, and death due to kidney failure in a multi-ethnic general population.

High plasma TMAO levels are linked to higher risks of heart disease, kidney failure, and overall mortality. Since TMAO is produced by gut bacteria from nutrients in red meat and eggs, managing your intake of these foods and supporting gut health may help lower TMAO levels and potentially reduce long-term health risks. Consult with a healthcare provider for personalized advice.

Supplementing plant-based proteins (specifically soy or pea) with extra leucine or essential amino acids can equalize the muscle protein synthesis response to whey protein, but long-term supplementation with leucine alone does not increase muscle mass or strength in older adults.

Do not rely on leucine supplements alone to build muscle. While adding leucine to a small plant-protein meal can make it work as well as a larger animal-protein meal for immediate muscle signaling, taking leucine pills on top of your normal diet has not been shown to increase muscle mass or strength in older adults. Focus on eating enough total protein from whole foods or complete plant proteins instead.

Menopause triggers a shift in body composition toward increased visceral and perivascular fat and reduced fat-free mass, independent of modest total weight gain, driven by estrogen deficiency and elevated FSH.

Do not rely on the scale alone during menopause. Your risk is increasing even if your weight stays stable because you are losing muscle and gaining dangerous visceral fat. Measure your waist circumference and prioritize resistance training to preserve muscle mass.

Estrogen replacement therapy (ERT) and progestin therapy reduce BMI, waist circumference, fasting insulin, and the incidence of new diabetes compared to placebo.

If you are experiencing menopausal symptoms and metabolic risks, discuss Hormone Replacement Therapy (HRT) with your doctor. It may help lower your risk of developing type 2 diabetes and improve body composition, though you must weigh this against potential side effects.

GLP-1 receptor agonists cause a reduction in lean body mass (25-45% of total weight loss), which may impact mobility and metabolic rate, particularly in older adults or those with sarcopenic obesity.

When you lose weight on GLP-1 medications, you lose both fat and some muscle. About a quarter to half of your total weight loss might be muscle. This can affect your strength and metabolism, especially if you are older. To protect your muscles, focus on eating enough protein and doing resistance exercises (like weight lifting) while on the medication.

Short sleep duration (<5 hours) and long sleep duration (>9 hours) are independently associated with a significantly increased risk of acute stroke, exhibiting a U-shaped relationship where short sleep shows a higher magnitude of association on univariate analysis but attenuates more than long sleep after adjusting for comorbidities.

Aim for 7 hours of sleep per night. Both sleeping less than 5 hours and more than 9 hours is associated with a significantly higher risk of stroke. If you consistently sleep outside this range, consider it a modifiable risk factor for cardiovascular health, especially if you have other risk factors like hypertension.

Symptoms of Obstructive Sleep Apnea (snoring, snorting, breathing cessation) and a derived OSA score of 2-3 are significantly associated with increased odds of acute stroke, independent of a formal OSA diagnosis.

If you or your partner notice loud snoring, gasping, or pauses in breathing during sleep, seek medical evaluation. These symptoms are strongly linked to stroke risk, even if you haven't been diagnosed with sleep apnea. Addressing these symptoms may reduce stroke risk.

A higher cumulative burden of sleep disturbance symptoms (Sleep Disturbance Symptom Burden >5) is associated with a graded, significantly increased risk of acute stroke, with the highest burden showing an OR of 5.38.

If you experience multiple sleep problems (e.g., short/long sleep, poor quality, snoring, napping), your stroke risk increases significantly. The more symptoms you have, the higher the risk. Seek a comprehensive sleep evaluation to address all symptoms, not just one.

Saturated fatty acids (SFAs) promote inflammation and insulin resistance by activating TLR4 and inflammasomes, whereas polyunsaturated fatty acids (PUFAs) mitigate inflammation by suppressing NF-κB and upregulating anti-inflammatory IL-10.

Focus on the quality of your fats. Replace saturated fats (found in red meat, butter) with polyunsaturated fats (found in fish, nuts, olive oil). This shift can help lower inflammation and improve your body's sensitivity to insulin.