Browse the evidence

The evolution of human fat storage levels is driven by a trade-off between starvation risk and predation risk, resulting in an optimum fatness that minimizes total mortality, not maximum fat storage.

Your body stores fat to balance survival needs (starvation) against survival costs (predation/mobility). This explains why we don't store maximum possible fat; there is an evolutionary optimum.

An intensive lifestyle intervention (ILI) may exacerbate the severity of self-reported problem-solving complaints in Type 2 Diabetes patients who have pre-existing cognitive complaints and a history of cardiovascular disease.

If you have Type 2 Diabetes, existing cognitive complaints, and a history of heart disease, be aware that aggressive lifestyle interventions might be associated with increased reports of problem-solving difficulties. Discuss this specific risk with your doctor to determine if a modified or less intensive approach is safer for your cognitive health.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is associated with a 19% increased risk of incident atrial fibrillation (AF), with risk escalating as liver disease severity (fibrosis/MASH) increases.

If you have MASLD, you have a significantly higher risk of developing atrial fibrillation, even in early stages. Managing metabolic risk factors (weight, blood sugar, blood pressure) is not just about liver health but is a critical strategy for preventing heart rhythm disorders. Early detection and comprehensive management of MASLD are crucial to mitigate this dual burden.

Obesity and Obstructive Sleep Apnea (OSA) exacerbate the risk of AF in MASLD through hemodynamic changes, epicardial fat deposition, and sympathetic nervous system activation.

For MASLD patients, managing weight and treating sleep apnea are critical for preventing AF. These conditions add mechanical and inflammatory stress to the heart, which can be mitigated through lifestyle and medical interventions.

Standardized ex vivo high-resolution respirometry (HRR) measurements of mitochondrial function in permeabilized human skeletal muscle significantly underestimate in vivo metabolic rates because they are conducted at 37°C, whereas mitochondria operate at temperatures up to 10°C higher (approx. 50°C) during maximal exercise.

If you are interpreting mitochondrial function from lab tests on muscle biopsies (ex vivo), be aware that standard tests at 37°C likely underestimate true in vivo capacity. The paper suggests that mitochondrial temperature during exercise can reach ~50°C. To compare lab results with real-world metabolic performance, apply a temperature correction factor (approx. 10°C increase) to the ex vivo data.

Long-term follow-up (median 14 years) of an intensive lifestyle intervention (ILI) targeting weight loss and physical activity in adults with type 2 diabetes and obesity does not significantly reduce the prevalence of frailty compared to diabetes support and education (DSE).

For older adults with diabetes, intensive lifestyle interventions (diet and exercise) provide short-to-medium term benefits in physical function, but these benefits may not persist enough to prevent the clinical syndrome of frailty 14 years later. Sustainable, long-term maintenance of lifestyle changes is critical, as the benefits of intensive programs tend to fade after structured support ends.

Basal glucose homeostasis is governed by insulin-independent mechanisms primarily regulated by the brain, whereas glucose tolerance is determined by the interaction between insulin secretion and insulin sensitivity.

Understanding that fasting blood sugar (basal state) and how your body handles meals (glucose tolerance) are controlled by different systems can explain why some treatments work for one but not the other. Fasting glucose is largely managed by brain-mediated, insulin-independent processes, while meal response relies on insulin. This suggests that therapies targeting the brain (like certain GLP-1 agonists) may help basal glucose even if they don't fully restore insulin sensitivity.

Aging is associated with impaired glucose tolerance due to reduced insulin sensitivity and failure of insulin secretion to compensate, without changes in basal glucose or insulin-independent glucose disposal.

As you age, your body's ability to handle sugar after meals (glucose tolerance) declines due to insulin resistance and insufficient insulin response, but your fasting blood sugar may remain normal. This highlights the importance of monitoring post-meal glucose in older adults.

Whey protein supplementation does not improve bone health biomarkers (formation, resorption, or turnover ratio) in male soldiers undergoing intense initial entry training compared to carbohydrate supplementation.

If you are undergoing intense military or athletic training, drinking whey protein shakes daily will not protect your bones from stress injuries any more than drinking a carbohydrate shake will. Focus on adequate total calorie intake, vitamin D exposure, and managing training load instead of relying on protein supplements for bone health.

The long-term mental health and quality of life benefits of an intensive lifestyle intervention (ILI) for type 2 diabetes do not persist after the intervention is terminated; participants revert to baseline risk levels comparable to a control group.

If you stop the structured support of a lifestyle program, your mental health and quality of life benefits will likely erate over time, even if you maintain some weight loss. To keep the psychological benefits, you need a long-term maintenance plan, not just an initial intensive phase.

Smoking is a significant risk factor that increases the risk of incident symptomatic peripheral arterial disease in individuals with diabetes mellitus.

If you smoke, quitting is critical for preventing peripheral arterial disease, especially if you have diabetes. This study shows that smokers have nearly twice the risk of developing PAD compared to non-smokers. Stopping smoking is the most impactful lifestyle change you can make to protect your circulation.

SGLT2 inhibitors reduce cardiovascular risk through mechanisms including osmotic diuresis, blood pressure reduction, weight loss, and reduced arterial stiffness, independent of glucose lowering.

SGLT2 inhibitors like empagliflozin help the heart by lowering blood pressure, reducing body weight (specifically fat mass), and making arteries more flexible. These physical changes reduce the workload on the heart and lower the risk of heart failure and cardiovascular death, offering benefits beyond just controlling blood sugar.

Standard, unvalidated diet quality (HEI-C) and fitness measures fail to correlate with clinical metabolic syndrome reversal, whereas factor-analytically derived latent models of these constructs demonstrate excellent measurement equivalence and validity.

If you are tracking diet or fitness progress to manage metabolic health, standard off-the-shelf scores (like basic HEI-C) may not accurately reflect your clinical improvements. To truly link your lifestyle changes to health outcomes, use validated, multi-component assessments that account for measurement error, rather than relying on single, unvalidated metrics.

Patients with higher comorbidity burdens (cardiovascular risk, respiratory, pain, mental health) and higher BMI are significantly more likely to receive high-intensity interventions (surgery/procedures) rather than lifestyle intervention, while anti-obesity medications (AOMs) are underutilized relative to guidelines.

If you have obesity and comorbidities like diabetes or heart disease, you are more likely to get surgery or procedures than medication or lifestyle programs, even if guidelines suggest medication first. This is because providers often wait for severe BMI or complications before escalating care. You should discuss all options, including AOMs, with your provider rather than waiting for surgery eligibility.

Thyroid hormone substitution therapy in hypothyroid patients produces only modest weight loss (3-5 kg) and does not resolve obesity; therefore, obesity treatment should not be delayed until thyroid levels are normalized.

Do not wait for your thyroid levels to normalize before starting weight loss efforts. Thyroid medication will only help you lose a small amount of weight (3-5 kg). Focus on behavioral changes (diet and exercise) and other obesity treatments immediately, as these are the primary drivers of weight loss.

Statins are safe and beneficial for patients with chronic liver disease (excluding decompensated cirrhosis), improving overall survival and reducing hepatic decompensation risk, contradicting the historical dogma that they are contraindicated.

If you have fatty liver disease and high cholesterol or heart disease risk, take your statin as prescribed. It is safe for your liver (unless you have advanced, decompensated cirrhosis) and helps you live longer.

Central (aortic) blood pressure is a stronger predictor of future cardiovascular risk and target organ damage than peripheral (brachial) blood pressure because vital organs are more directly exposed to central pressure.

If you have obesity or hypertension, ask your doctor about central blood pressure assessment. Standard arm-cuff readings may underestimate the stress on your heart and kidneys. Central pressure monitoring offers a more accurate prediction of long-term cardiovascular risk and organ damage.

Higher total protein intake (up to ~116g/day) is not significantly associated with reduced risk of cardiovascular disease (CVD), coronary heart disease (CHD), or stroke in middle-aged adults.

If you are a middle-aged adult concerned about heart disease, simply eating more protein than you currently do is unlikely to lower your risk of heart attack or stroke. Focus on overall dietary patterns and established risk factors rather than just maximizing protein grams.

Higher diversity of protein sources (specifically 'count' of sources) is weakly associated with a marginally higher risk of CVD, while 'dissimilarity' of sources shows no association.

Don't assume that eating many different types of protein (e.g., chicken, beef, fish, beans, tofu) will protect your heart. This study suggests that having a high count of protein sources might be weakly linked to higher risk, possibly due to what those sources are (e.g., processed meats).

In patients with Obstructive Sleep Apnea (OSA) treated with CPAP, a history of prior vascular events, hypertension, older age at treatment initiation, and higher comorbidity burden are significant independent risk factors for subsequent vascular events, whereas obesity (BMI) is not.

If you have OSA and use CPAP, adherence is crucial, but it does not guarantee immunity from heart issues. Your risk of a vascular event is significantly higher if you have high blood pressure, a history of heart problems, or other chronic conditions. Focus on managing your blood pressure and comorbidities alongside your CPAP therapy, and seek early diagnosis and treatment to mitigate age-related risks.

Nutrition intervention trials for complex chronic disease exhibit extensive heterogeneity in outcome reporting, with only 8% of outcomes reported with relative consistency and a 25% agreement rate with established Core Outcome Sets (COS).

For researchers and clinicians: Do not assume that 'nutrition intervention' studies are directly comparable just because they treat similar diseases. Look for whether they use Core Outcome Sets (COS). If they don't, the results may be difficult to apply to other patients or combine with other studies. Advocate for the use of standardized outcome sets in your own work to ensure your findings contribute to reliable evidence.

Modern commercial Paleolithic diet variants (low-carb/high-fat) and extreme Carnivore diets contradict anthropological evidence of ancestral carbohydrate intake (35-72% of energy) and may increase cardiovascular risk by promoting high saturated fat intake and dyslipidemia.

If you are following a commercial Paleo or Carnivore diet, be aware that your macronutrient profile (very low carb, high saturated fat) differs significantly from what anthropological evidence suggests ancestral humans ate. Current scientific consensus links high saturated fat intake to elevated LDL and cardiovascular risk. While these diets may offer short-term benefits (possibly via elimination of processed foods or FODMAPs), long-term adherence to high saturated fat levels may increase cardiovascular risk. Consider aligning your diet with evidence-based guidelines that limit saturated fat, rather than relying on evolutionary arguments alone.

The COVID-19 pandemic and associated mitigation strategies (e.g., stay-at-home orders, physical distancing) caused a significant increase in the prevalence of depressive symptoms and loneliness among older adults with type 2 diabetes, while insomnia prevalence remained stable.

If you are an older adult with diabetes, be aware that pandemic-related isolation can significantly worsen mood and loneliness. Monitor your mental health closely, as the risk is higher if you had prior symptoms. Prioritize safe social engagement strategies to mitigate these effects.

Women with type 2 diabetes face a disproportionately higher relative risk of major cardiovascular complications compared to men with type 2 diabetes, despite having lower absolute incidence rates in the general population.

If you are a woman with type 2 diabetes, your risk of heart disease and stroke is significantly higher relative to your non-diabetic peers than it is for men with diabetes. This means you cannot rely on general 'average' risk calculators. You need more aggressive management of blood pressure, lipids, and blood sugar than men might require for similar risk profiles, and you should advocate for this heightened level of care with your healthcare provider.