Browse the evidence

Soy protein intake does not significantly impact total cholesterol, LDL cholesterol, or triglycerides in individuals with familial hypercholesterolemia.

Increasing soy protein intake is not an effective strategy for lowering cholesterol in patients with Familial Hypercholesterolemia. The evidence shows no significant benefit for LDL or triglycerides compared to standard diets.

A decrease in the dietary protein fraction (dilution by carbs/fat) triggers compensatory energy intake via protein leverage, potentially explaining a significant portion of the US obesity epidemic.

Ensure your diet has a sufficient proportion of protein relative to total calories. If you are eating a diet high in carbs and fats, you may need to eat more total food to get enough protein, which can lead to weight gain. Prioritize protein density to avoid this compensatory overeating.

Peanut protein supplementation (30g/day) does not significantly enhance resistance training adaptations (strength, hypertrophy, or myofibrillar protein synthesis) in younger adults compared to a control group.

If you are a younger adult starting resistance training, adding 30g of peanut protein daily on top of your training will not give you extra muscle or strength benefits compared to not taking it. It is not harmful, but it is not a magic bullet for hypertrophy in this demographic. Focus on your training and overall protein intake rather than specific plant-based supplements for enhanced results.

Women are more susceptible to the association between dietary cholesterol intake and serum cholesterol levels than men.

Women in this population show a stronger link between dietary cholesterol and blood cholesterol levels than men. Women may benefit from paying closer attention to cholesterol intake levels.

Dietary fatty acids (Saturated, Monounsaturated, and Polyunsaturated) are not significantly associated with serum lipid concentrations in this population.

In this population, changing saturated or unsaturated fat intake did not significantly change blood cholesterol levels. Focus may be better placed on dietary cholesterol intake.

Genotype-matched dietary interventions (low-fat vs. low-carbohydrate) may not consistently predict weight loss success in postmenopausal women compared to general overweight populations.

Do not rely solely on genetic testing to dictate whether you should eat low-fat or low-carb. Focus on sustainable dietary patterns like DASH or MED, as genotype matching has not consistently proven superior for weight loss in recent large studies.

Protein supplementation provides no additional performance benefit over resistance training alone for resistance-trained athletes who consume adequate dietary protein.

If you are already eating enough protein from food to support your training, adding protein supplements will not make you stronger or bigger than training alone. Focus on your resistance training program and a balanced diet. If you struggle to meet protein needs through food, supplements can help, but they are not a magic performance booster.

Other protein supplements (soy, casein, pea, rice, etc.) do not show statistically significant differences in muscle strength or fat-free mass gains compared to placebo in healthy adults undergoing resistance training.

If you are using other protein supplements like soy, casein, or pea protein, they may not provide significant additional benefits for muscle strength or mass gains compared to a placebo. Focus on collagen or whey if you want to maximize your results.

GLP-1 receptor agonist pharmacotherapy in older adults causes significant loss of lean skeletal muscle mass (approx. 26-40% of total weight lost), which independently predicts adverse outcomes including mortality, functional decline, and frailty.

If you are an older adult using GLP-1 medications, do not focus solely on the number on the scale. The medication causes you to lose muscle along with fat, which can lead to frailty and higher mortality. You must actively counteract this by combining your medication with resistance exercise and adequate protein intake to preserve your muscle mass.

Rapid and significant weight loss induced by Tirzepatide leads to aesthetic changes, including facial volume loss ('Ozempic face'), skin laxity, and altered collagen structure, which are secondary to fat loss rather than direct drug toxicity.

Significant weight loss can cause your face to look older or saggy due to loss of facial fat. This is a side effect of the weight loss, not the drug itself. Eating enough protein and vitamins (like D and B12) during treatment may help maintain skin health.

In Korean adults, adherence to a low-carbohydrate diet (LCD) is associated with higher odds of metabolic syndrome, primarily because LCDs in this population often substitute refined carbohydrates with processed meats and animal fats rather than healthy unsaturated fats.

If you are Korean or have an East Asian metabolic profile, simply reducing carbohydrates may not lower your metabolic syndrome risk and could potentially increase it if you replace rice with processed meats or unhealthy fats. Focus on the quality of your diet—choosing whole grains, unsaturated fats, and lean proteins—rather than just cutting carbs.

There is no significant difference between various macronutrient dietary groups (VLCLP, MCLP, MCHP, etc.) in their ability to lower blood glucose, blood pressure, or total cholesterol compared to a moderate fat-low protein (MFLP) control diet.

Do not expect that switching to a specific macronutrient ratio (like Keto or Low Fat) will significantly lower your blood pressure, blood glucose, or total cholesterol compared to a standard moderate-fat diet. The evidence for these specific outcomes is weak and shows no clear winner among the diets studied.

High consumption of carbohydrates, specifically from cereals and starchy roots, is consistently associated with increased risk of cardiovascular diseases (CVDs), including raised blood pressure, CVD mortality, and raised blood glucose, across global populations.

Focus on reducing the proportion of energy derived from high-glycemic carbohydrates, particularly cereals (like wheat) and starchy roots, as this is consistently linked to higher cardiovascular risk globally. This does not necessarily mean eliminating these foods, but rather managing their quantity and type relative to other macronutrients.

A low-carbohydrate, high-fat diet may increase low-density lipoprotein cholesterol (LDLc) levels, which is a potential adverse effect compared to a control diet.

Be aware that switching to a low-carb, high-fat diet might increase your LDL cholesterol levels. However, this should be viewed in the context of improved triglycerides and HDL, which are better predictors of heart disease risk. Consult a healthcare provider if you have a history of lipid disorders.

Dysregulation of the gut microbiota (dysbiosis) in the elderly, characterized by decreased diversity and reduced anti-inflammatory bacteria, is a source of chronic low-grade inflammation.

Gut health changes with age, often showing reduced diversity and fewer beneficial bacteria. This dysbiosis is linked to higher levels of inflammatory cytokines. Maintaining gut health through diet may help manage inflammation, although the specific mechanisms are complex.

ATF3 induction by synthetic agents like ST32da promotes adipocyte browning and inhibits lipogenesis, potentially offering a mechanism to combat obesity.

Research indicates that inducing ATF3 expression can help convert white fat to beige/brown fat, which burns energy. A synthetic inducer called ST32da was shown to do this in mice by blocking specific fat-making pathways. This is not yet a available treatment for humans.

Plant-based proteins (excluding soy) have not been adequately studied for their effect on muscle protein synthesis and appetite in aging adults, though soy appears to have similar appetite-suppressing effects to animal proteins.

While soy protein appears to manage appetite similarly to animal protein, there is insufficient evidence for other plant proteins (like peas or oats) in older adults. Prioritize soy or combine plant sources to ensure adequate amino acids, and monitor appetite to prevent unintended weight loss.

Decline in mitophagy and autophagy with age leads to the accumulation of damaged mitochondria and ROS, contributing to sarcopenia, neurodegeneration, and cardiovascular decline.

Exercise is a known inducer of autophagy and mitophagy. Maintaining physical activity, especially aerobic and resistance training, may help counteract the age-related decline in these clearance pathways, protecting muscle and brain health.

Gut dysbiosis in obesity increases intestinal permeability, allowing lipopolysaccharide (LPS) to enter circulation, which triggers adipose tissue macrophages to switch from an anti-inflammatory (M2) to a pro-inflammatory (M1) phenotype via TLR4, thereby driving low-grade chronic inflammation.

If you have obesity, your gut health may be driving inflammation. A high-fat or high-sugar diet can damage your gut barrier, letting bacterial toxins (LPS) into your blood. This triggers immune cells in your fat tissue to become pro-inflammatory, worsening insulin resistance and fat storage. Improving gut health through fiber and reducing processed foods may help reduce this inflammation.

Short-chain fatty acids (SCFAs), particularly butyrate, exert anti-inflammatory effects by promoting macrophage polarization to the M2 phenotype and inhibiting NF-κB activation.

Eat more fiber-rich foods (vegetables, whole grains) to feed your gut bacteria. They produce short-chain fatty acids (SCFAs) like butyrate, which help calm inflammation by switching immune cells to a healing (M2) state. This is especially important if you have inflammatory conditions.

European children consume significantly higher proportions of total and added sugars relative to energy intake compared to adults, with sweet products and beverages being the primary sources.

If you are tracking sugar intake for health or weight management, pay close attention to children's diets. They are consuming a disproportionately high amount of sugar, primarily from sweets and sugary drinks, compared to adults. To reduce this, prioritize whole fruits over juices and limit confectionery and sweetened beverages, which are the main drivers of added sugar intake in this demographic.

Glutamine supplementation promotes M2 macrophage polarization via the glutamine-UDP-GlcNAc pathway and alpha-ketoglutarate production, which may help prevent obesity- or diabetes-associated pathology.

While glutamine is known to support immune health, this review highlights its specific role in shifting immune cells away from inflammation in obesity. Current research is mostly in mice, so humans should consult a doctor before using glutamine specifically for metabolic health, as the direct benefits in people are not yet fully proven.

Succinate accumulation, derived from glutamine-dependent anerplerosis, promotes M1 macrophage polarization and stabilizes HIF-1α, contributing to inflammation in obesity.

High levels of succinate are linked to inflammation in obesity. While you cannot directly 'take' succinate to fix this, understanding that it drives inflammation highlights why managing metabolic health is crucial. No specific succinate-based therapy is currently recommended for humans.

High-intensity exercise stimulates intramuscular triglyceride (IMTG) lipolysis, but the released fatty acids are not immediately oxidized; instead, they are released into the plasma and utilized during recovery.

During high-intensity exercise, your muscles break down stored fat (IMTG), but you don't burn it all right away. Some of this fat is released into your blood and used for energy during the recovery period after the workout.