Browse the evidence

Organic meat contains significantly higher concentrations of total polyunsaturated fatty acids (PUFA) and n-3 PUFA compared to conventional meat, with n-3 PUFA levels estimated to be 47% higher in organic meat.

If you eat meat, choosing organic options can increase your intake of beneficial n-3 fatty acids by nearly 50% compared to conventional meat. This is primarily due to the animals' forage-based diets in organic farming. While organic meat is more expensive, this nutritional difference may support heart health and reduce inflammation.

Nicotinamide Riboside (NR) supplementation at doses up to 1000 mg/day for 8 weeks significantly increases whole blood NAD+ levels in a dose-dependent manner without causing flushing or elevating LDL cholesterol in healthy overweight adults.

If you are looking to boost NAD+ levels, taking Nicotinamide Riboside (NR) between 100mg and 1000mg daily for 8 weeks is a safe and effective strategy for healthy overweight adults. You can expect a significant increase in blood NAD+ (up to 140% at the highest dose) without the flushing side effects of Niacin or negative impacts on cholesterol. Start with a lower dose (100-300mg) to assess tolerance, though the study found all doses well-tolerated.

Dietary intake of fermentable carbohydrates and fibers drives the gut microbiota to produce short-chain fatty acids (SCFAs) like butyrate and propionate, which exert anti-inflammatory, anti-cancer, and metabolic regulatory effects on the host.

Prioritize whole plant foods rich in diverse fibers (grains, legumes, fruits, vegetables) to feed your gut bacteria. These bacteria convert fiber into short-chain fatty acids (SCFAs) like butyrate, which reduce inflammation, protect against colon cancer, and support metabolic health. Avoid highly processed high-carb foods that lack fiber, as they do not provide these microbial benefits.

Higher baseline 25(OH)D concentrations result in a significantly smaller increase in serum 25(OH)D following vitamin D supplementation, demonstrating an inverse dose-response relationship.

If you are vitamin D deficient, you will likely see a much larger increase in your blood levels from supplementation than someone who is already sufficient. This is not a failure of the supplement, but a biological response to the saturable nature of liver enzymes. Deficient individuals should expect a robust response, while sufficient individuals may see minimal changes from standard doses.

Higher BMI and body fat percentage significantly reduce the efficacy of vitamin D supplementation, resulting in smaller increases in circulating 25(OH)D concentrations compared to leaner individuals.

If you have a higher BMI, standard vitamin D doses may be less effective because the vitamin gets stored in fat tissue rather than circulating in your blood. You may need higher doses to achieve the same blood levels as a leaner person. This is a known physiological effect, not a lack of effort.

Distributing magnesium intake across multiple small doses throughout the day significantly increases fractional absorption and retention compared to consuming the same total amount in a single bolus.

If you take magnesium supplements, do not take the entire daily dose at once. Split the total amount into 2-4 smaller doses taken throughout the day with meals. This strategy maximizes absorption because the body's active transport mechanisms (TRPM6/7) are more efficient at lower concentrations, whereas high single doses saturate these pathways and lead to lower relative absorption.

High doses of magnesium impair fractional absorption efficiency, whereas low doses are absorbed more efficiently, although absolute absorption increases with dose.

Avoid taking massive single doses of magnesium (e.g., >500mg at once) if your goal is efficient absorption. While you will absorb more total milligrams, the percentage absorbed drops drastically. To maximize efficiency, keep individual doses moderate (e.g., <100-200mg) and spread them out.

Vitamin E improves steatohepatitis in nondiabetic patients but is not recommended for diabetic patients due to cardiovascular risks.

If you have fatty liver but do not have diabetes, Vitamin E supplementation may improve your liver inflammation. However, if you have diabetes, do not take Vitamin E for this purpose, as it may increase your risk of heart problems. Consult your doctor to determine if this is appropriate for your specific health profile.

Fortification of common foods (bread, milk, spreads) with long-chain n-3 polyunsaturated fatty acids (LCn-3PUFA) is an effective strategy to increase intake, but current commercial products often deliver insufficient doses per serving to meet therapeutic recommendations for cardiovascular disease prevention.

If you are trying to lower your cardiovascular risk, simply eating 'fortified' foods like bread or milk might not be enough. Check the label for the specific amount of EPA and DHA (in mg). Many products only offer a tiny fraction of the dose needed for heart health. To get therapeutic benefits, you may need to eat large quantities of these fortified foods, which is impractical. For high-risk individuals, high-dose supplements or significant increases in oily fish intake are likely more effective than standard fortified foods.

Microencapsulation of fish oil in food products can mask unpleasant flavors and improve oxidative stability, but the amount of LCn-3PUFA that can be delivered in these formats is often too low to meet recommended allowances.

Microencapsulated fish oil powders are useful for masking taste, but they are not a magic bullet for high-dose needs. Because these powders often contain only a small percentage of actual fish oil, you might need to eat a lot of them to get a therapeutic dose. For high-dose needs, standard high-quality capsules or direct fish intake may still be more efficient.

Dietary interventions rich in antioxidants, specifically extra virgin olive oil, fruits, and vegetables, lower levels of inflammatory markers (IL-6, TNF-alpha) and downregulate NF-kappaB pathway genes in PBMCs.

Incorporate antioxidant-rich foods like extra virgin olive oil, fruits, and vegetables into your diet. These foods actively lower inflammatory markers like IL-6 and reduce the activity of inflammatory pathways, helping to manage systemic inflammation.

Sodium retention is an evolutionarily conserved mechanism linked to insulin resistance, where insulin promotes sodium reabsorption in the kidney, and high salt intake exacerbates hypertension in salt-sensitive individuals with insulin resistance.

For those with high blood pressure and insulin resistance, reducing sodium intake is particularly critical as their bodies are evolutionarily primed to retain salt, which insulin further exacerbates.

Curcumin reduces oxidative stress and inflammation in Type 2 Diabetes patients, as evidenced by reduced levels of Malondialdehyde (MDA) and C-Reactive Protein (CRP).

Curcumin helps lower the body's inflammation and oxidative stress, which are key drivers of diabetes complications. This supports overall health and may complement your standard treatment.

Adequate dietary calcium intake is essential for acquiring peak bone mass (PBM) during growth, and insufficient intake during childhood and adolescence leads to low bone mineral density, increasing the risk of osteoporosis and fractures in later life.

Ensure you consume enough calcium, especially during your teenage years and early adulthood, to build strong bones. If you don't eat dairy, look for calcium-fortified foods like cereals or plant-based milks, and consider soy products which are bioavailable sources of calcium. For postmenopausal women, maintaining adequate calcium intake can help slow age-related bone loss.

The bioavailability of calcium varies significantly by food source; while milk products offer ~30% bioavailability, spinach is poor (~5%) due to oxalic acid, whereas soya beans are bioavailable (30-40%) despite containing oxalic and phytic acids.

Don't just count milligrams; consider where they come from. Milk and fortified cereals are good sources. Spinach has calcium but it's poorly absorbed. If you eat soy, you are getting a bioavailable form of calcium, similar to milk.

High total polyphenol intake (specifically stilbenes and lignans) is associated with a significant reduction in all-cause mortality in high cardiovascular risk individuals.

To potentially lower mortality risk, aim for a diet high in polyphenol-rich foods, particularly those containing stilbenes (found in grapes, olive oil) and lignans (found in seeds, whole grains). This is most relevant if you are at high risk for cardiovascular disease. The study suggests a threshold effect, meaning benefits may appear once intake exceeds a certain level, rather than increasing linearly.

High intake of stilbenes and lignans is significantly associated with reduced all-cause mortality, whereas flavonoids and phenolic acids show no significant association.

While total polyphenol intake is beneficial, the mortality benefit appears driven specifically by stilbenes and lignans. Prioritize foods rich in these specific compounds, such as red wine (stilbenes), olive oil (stilbenes), flaxseeds, and whole grains (lignans), over generic 'polyphenol' supplements.

Prebiotics, specifically inulin and fructo-oligosaccharides (FOS), selectively stimulate the growth of beneficial gut bacteria like Bifidobacteria, leading to the production of short-chain fatty acids (SCFAs) which have physiological benefits.

Incorporate prebiotic fibers like inulin and FOS into your diet to support beneficial gut bacteria. Start with small amounts to minimize potential digestive discomfort. These fibers help produce beneficial short-chain fatty acids.

Substituting plant-based relishes with small dried whole fish (with bones) twice daily significantly increases zinc and iron bioavailability in rural Malawian preschool children by providing haem iron and animal protein that counteract phytate inhibition.

For families relying on maize and plant-based diets, adding small dried whole fish (with bones) to meals twice a day is a highly effective way to boost zinc and iron absorption. This works because the fish provides 'haem' iron and animal protein that help your body absorb nutrients from plants, even if those plants contain compounds that usually block absorption. This is particularly important for young children in rural areas where meat is not a regular part of the diet.

Soaking or fermenting maize flour to reduce phytic acid (IP-6 and IP-5) content significantly improves zinc and iron bioavailability when combined with animal protein sources, but has minimal impact on bioavailability when used alone.

If you prepare maize porridge, soaking the flour in water before cooking (or fermenting it) breaks down compounds that block nutrient absorption. However, this step alone isn't enough to fix deficiencies. You must combine this preparation method with sources of animal protein, like small dried fish, to truly unlock the iron and zinc in the maize.

Reducing sodium intake lowers blood pressure, particularly in hypertensive, diabetic, obese, and elderly individuals, but the effect in normotensive populations is smaller and less consistent.

Reduce sodium intake to no more than 6g of sodium chloride (2.4g sodium) per day. This is most effective if you are hypertensive, diabetic, obese, or elderly. Achieve this by avoiding added salt and processed foods.

Higher taurine intake, indicated by higher 24-hour urinary excretion, is associated with significantly lower risks of cardiovascular disease, including reduced blood pressure, lower body mass index, and decreased coronary heart disease mortality.

To support cardiovascular health, prioritize dietary sources of taurine such as seafood, meat, and dairy. Epidemiological evidence suggests that higher taurine intake is linked to lower blood pressure, healthier body weight, and reduced heart disease risk. If you consume a diet low in these foods, consider increasing intake of taurine-rich sources.

Taurine supplementation lowers total cholesterol and arterial fat deposition by increasing bile acid production and LDL receptor expression in the liver.

Taurine may help lower cholesterol and arterial fat by improving how the liver processes lipids. This is supported by studies showing reduced cholesterol with taurine supplementation. Including taurine-rich foods in your diet may support heart health.

Polysaccharides isolated from specific macrofungi (e.g., Ganoderma lucidum, Grifola frondosa, Pleurotus ostreatus) exhibit specific bioactivities including antitumor, immunomodulatory, and hypoglycemic effects.

If seeking specific health benefits, look for supplements containing specific mushroom polysaccharides (like Lentinan from Shiitake or Beta-Glucans from Reishi) rather than generic mushroom powder, as the specific structure determines the biological effect.