Browse the evidence

Fiscal disincentives (taxes on unhealthy foods) paired with incentives (subsidies for healthy foods) are more effective at improving population diet quality and reducing health disparities than voluntary education or labeling alone.

If you are a policymaker, prioritize taxes on sugary drinks and junk food, but use the revenue to subsidize fruits and vegetables. This approach has stronger evidence for improving health than just telling people to eat better.

Government procurement standards for schools, worksites, and healthcare settings are low-cost, sustainable, and effective interventions for improving diet quality.

If you manage a cafeteria or food service, implement strict nutrition standards for all food purchased. This is a proven, low-cost way to improve the health of the people you serve without relying on their willpower.

Higher cardiorespiratory fitness (CRF) is inversely associated with all-cause mortality with no observed upper limit of benefit, meaning extreme fitness levels provide greater survival advantages than moderate fitness.

Focus on improving your cardiorespiratory fitness through aerobic exercise. This study shows that higher fitness levels correlate with significantly lower mortality risk, and there is no 'ceiling' where more fitness becomes harmful. Even if you have conditions like hypertension, achieving high fitness levels offers significant survival advantages.

A higher Triglyceride-Glucose (TyG) index is independently associated with an increased incidence of atherosclerotic cardiovascular diseases (ASCVD), coronary artery disease (CAD), and stroke in individuals without baseline ASCVD.

If you are getting standard blood work, ask for your fasting glucose and triglyceride levels. You can calculate your TyG index using the formula: ln[triglycerides (mg/dL) × fasting plasma glucose (mg/dL) / 2]. A higher result indicates higher insulin resistance and a statistically higher risk for heart disease and stroke, even if your cholesterol looks normal. Discuss this with your doctor as part of a broader cardiovascular risk assessment.

Motivational Interviewing (MI) and avoiding stigmatization are critical components of obesity management that improve patient adherence, self-esteem, and treatment efficacy.

Work with your doctor to build a trusting relationship. Use Motivational Interviewing techniques to identify your own reasons for wanting to change. Focus on small, realistic goals and celebrate progress in health, not just weight.

EPA-only prescription omega-3s (Icosapent Ethyl) do not raise LDL cholesterol in patients with very high triglycerides, whereas EPA+DHA combinations may increase LDL-C by 15-36%.

If you are taking prescription omega-3s for high triglycerides, ask your doctor if your medication contains only EPA or both EPA and DHA. EPA-only options (like Vascepa) do not raise your LDL ('bad') cholesterol, whereas combinations (like Lovaza) might increase it by 15-36%. This distinction is important for your overall cardiovascular risk.

Individuals with prediabetes exhibit an aberrant gut microbiota profile characterized by a significant depletion of the genus Clostridium and the mucin-degrading bacterium Akkermansia muciniphila, which correlates with markers of poor metabolic health.

If you have prediabetes, your gut bacteria likely look different than those of someone with normal glucose regulation, specifically showing lower levels of beneficial bacteria like Akkermansia and Clostridium. While this is a strong indicator of metabolic stress, simply changing your diet to target these bacteria may not be enough to reverse insulin resistance without addressing broader metabolic factors, as the microbiota change alone does not appear to cause the glucose intolerance in animal models.

The magnitude of depressive symptom reduction from resistance exercise training is larger in individuals with mild to moderate depression compared to those with subclinical symptoms.

If you are experiencing mild to moderate depressive symptoms, resistance exercise training is likely to provide a substantial reduction in those symptoms. While it also helps those with subclinical symptoms, the effect is significantly larger for those with elevated baseline scores.

The observed antidepressant effect of resistance exercise training is smaller in trials where allocation and/or assessment was blinded, indicating that unblinded trials may overestimate the effect due to bias.

Be aware that the large effects often cited in unblinded studies may be inflated by participant expectations. However, even in rigorous, blinded trials, resistance exercise training still produces a significant, moderate reduction in depressive symptoms.

High predicted fat mass is strongly and monotonically associated with increased all-cause, cardiovascular, and cancer mortality in men, whereas low predicted lean body mass is the primary driver of the 'obesity paradox' (increased mortality at low BMI).

For men, maintaining muscle mass is as critical as managing fat for longevity. High fat mass increases mortality risk linearly, while low muscle mass increases risk significantly. Focus on resistance training to preserve lean mass and dietary quality to manage fat, rather than just chasing a specific BMI number.

mTORC1 signaling is the central regulator of skeletal muscle mass, acting as a dual controller that promotes hypertrophy through protein synthesis and prevents atrophy by inhibiting catabolic pathways.

To maximize muscle growth, you must activate the mTOR pathway. This is achieved through resistance training (mechanical load), adequate protein intake (amino acids), and growth factors like IGF-1. Conversely, conditions that suppress mTOR (like severe caloric restriction, aging-related sarcopenia, or high cortisol) will hinder muscle maintenance. Prioritize resistance exercise and sufficient protein to keep this signaling pathway active.

Histidine-containing dipeptides (Carnosine and Anserine) act as powerful intracellular pH buffers that attenuate pH changes in muscles during anaerobic exercise.

Carnosine and anserine help your muscles handle the acidity of intense exercise. This is why they are often studied for performance benefits.

Alginate serves as a biocompatible and biodegradable material for drug delivery, including the encapsulation of probiotics and insulin.

Alginate is widely used to deliver medications and probiotics effectively. It protects these substances from degradation and ensures they reach their target in the body. This makes it a valuable component in many health supplements and pharmaceuticals.

Higher body mass index (BMI) is associated with a dose-response increase in the risk of severe COVID-19 outcomes, including hospitalization, ICU admission, invasive mechanical ventilation, and death, with the lowest risk observed at BMIs near the healthy weight/overweight threshold (23.7–25.9 kg/m²).

Maintaining a BMI in the healthy weight range (18.5–24.9 kg/m²) is associated with the lowest risk of severe COVID-19 outcomes, including hospitalization and death. If you have obesity or are overweight, you are at a higher risk for severe illness, and this risk increases with higher BMI categories. Public health recommendations include prioritizing vaccination, masking, and accessing resources to support a healthy weight through nutrition and physical activity.

Adopting an extended unhealthy lifestyle profile (including smoking, alcohol, poor diet, low physical activity, high TV viewing, and sleep duration) significantly increases all-cause and cardiovascular disease mortality risk, with the magnitude of this risk disproportionately higher in socioeconomically deprived populations.

Your lifestyle choices (diet, activity, sleep, substance use) have a massive impact on your longevity, and this impact is even more severe if you live in a deprived area. To maximize your health, you must address all these factors, not just one. However, recognizing that systemic factors play a role, seeking support and focusing on what you can control within your environment is critical.

Skeletal muscle inactivity (sedentary behavior) downregulates genes involved in mitochondrial processes and ATP production, while acute exercise upregulates these pathways, with NR4A3 serving as a key regulator of this metabolic response.

Sedentary time actively suppresses your muscles' ability to produce energy (mitochondrial function). While exercise boosts this, the key takeaway is that prolonged inactivity reverses these benefits. To maintain metabolic health, avoid long periods of sitting, as inactivity actively downregulates the genes responsible for energy production.

Tirzepatide, a dual GIP and GLP-1 receptor agonist, achieves superior glycemic control and weight loss compared to selective GLP-1 agonists by leveraging imbalanced receptor engagement and biased GLP-1 signaling that favors cAMP generation over beta-arrestin recruitment.

Tirzepatide is a once-weekly injection for Type 2 Diabetes that works by activating both GIP and GLP-1 receptors. It is designed to maximize blood sugar control and weight loss while minimizing the stomach side effects often seen with other GLP-1 drugs. Clinical trials show significant improvements in blood sugar and weight loss, particularly at higher doses.

Obesity is fundamentally a state of chronic low-grade systemic inflammation driven by adipose tissue dysfunction, where an expansion of visceral fat leads to a shift from anti-inflammatory M2 macrophages to pro-inflammatory M1 macrophages, resulting in elevated levels of cytokines like TNF-alpha, IL-6, and resistin.

Recognize that obesity involves a biological inflammatory state, not just excess calories. This understanding shifts the focus from simple willpower to managing inflammation through medical and lifestyle interventions. While the paper highlights the problem, it notes that caloric restriction and regular exercise are effective interventions to reduce this inflammation and metabolic dysfunction.

Brown adipose tissue (BAT) activity is negatively associated with BMI and body fat percentage; higher BAT activity is linked to lower BMI and body fat, suggesting it plays a protective role against obesity by burning calories.

Increasing brown fat activity through exposure to cold, adequate sleep, and exercise may help counteract the decline in metabolic rate associated with higher body fat. This is a biological lever to support weight management efforts.

Skeletal muscle AMPK activation during exercise is strictly dependent on exercise intensity and duration, with high-intensity/short-duration exercise activating alpha2beta2gamma3 complexes via LKB1, while low-intensity/long-duration exercise activates alpha2beta2gamma1 and alpha1beta2gamma1 complexes via CaMKKbeta.

To target specific metabolic adaptations, you must match your exercise intensity and duration to the desired AMPK complex. High-intensity, short-duration efforts primarily activate the alpha2beta2gamma3 complex via LKB1, while lower-intensity, longer-duration efforts engage alpha2beta2gamma1 and alpha1beta2gamma1 complexes via CaMKKbeta. Simply 'exercising' is not enough; the specific protocol dictates the molecular response.

Blending multiple plant protein sources or fortifying them with essential amino acids (specifically leucine) can improve their anabolic quality to match animal proteins.

To get the most out of plant protein, choose products that are either 'blended' (e.g., pea and rice protein mixed) or 'fortified' with leucine. This ensures you get all the essential amino acids needed for muscle building, making them just as effective as animal proteins without needing to eat huge amounts.

Improving diet quality over 12 years is associated with a reduced risk of cardiovascular disease mortality, but not necessarily cancer mortality, depending on the dietary index used.

Improving your diet quality can reduce your risk of dying from cardiovascular disease, especially if you follow patterns like the Alternate Healthy Eating Index or Mediterranean Diet. While the link to cancer mortality is less clear across all dietary patterns, focusing on overall diet quality is still beneficial.

GLP-1 receptor agonists reduce major adverse cardiovascular events (MACE) by 14% and all-cause mortality by 12% in patients with type 2 diabetes.

If you have Type 2 Diabetes and are at high risk for heart disease, ask your doctor about GLP-1 receptor agonists (like liraglutide or semaglutide). These medications have been shown to significantly reduce the risk of heart attacks, strokes, and death, in addition to helping with blood sugar control and weight loss.

Metformin reduces all-cause mortality by 36% and heart attack incidence by 39% in overweight patients with newly diagnosed type 2 diabetes without established cardiovascular disease.

If you have recently been diagnosed with Type 2 Diabetes and are overweight, metformin is likely your first medication. It not only helps control blood sugar but has been shown to significantly reduce the risk of heart attacks and death.