Browse the evidence

Postprandial glucose metabolism parameters derived from an Oral Glucose Tolerance Test (OGTT) do not predict anthropometric changes (weight, fat mass, or fat-free mass) following an 8-week low-calorie formula diet in adults with obesity.

If you are on a strict, low-calorie diet for 8 weeks, your body's specific glucose and insulin response to a sugar test (OGTT) will not help predict how much weight you will lose. The study found that baseline fat-free mass and sex were much better predictors of weight loss than metabolic phenotyping. Focus on adhering to the caloric deficit rather than seeking metabolic tests to guide short-term weight loss.

Conversional surgeries (e.g., RYGB, SADI-S, DS) are effective for managing post-bariatric recurrent weight gain (RWG) and diabetes recurrence, but carry higher risks of complications compared to primary surgery.

If you are gaining weight back after bariatric surgery and other treatments have failed, ask your doctor about conversional surgeries. These are more complex procedures that can effectively manage weight and diabetes, but they carry higher risks of complications. It is crucial to go to specialized centers with experienced surgeons and undergo strict postoperative surveillance.

Very low-carbohydrate diets (ketogenic) pose long-term sustainability, health, and environmental risks, including potential nutrient deficiencies and increased LDL cholesterol.

Be cautious with very low-carb diets. They can lead to nutrient deficiencies, increased LDL cholesterol, and are difficult to sustain long-term. Focus on balanced, high-quality diets instead.

Bariatric surgery (Roux-en-Y gastric bypass and sleeve gastrectomy) provides long-term weight loss and high diabetes remission rates (51% at 12 years) by altering gut microbiota diversity and increasing specific beneficial bacteria like Bacteroides uniformis.

For severe obesity with type 2 diabetes, bariatric surgery (Roux-en-Y or Sleeve Gastrectomy) is the most effective long-term treatment, offering sustained weight loss (~35kg) and a 51% chance of diabetes remission after 12 years. This is achieved partly by reshaping the gut microbiome to favor beneficial bacteria.

Partially crystalline triacylglycerol droplets attenuate lipid digestion and bioaccessibility in vitro, but this effect does not necessarily translate to higher satiety or lower postprandial lipemia in humans compared to acid-stable liquid emulsions.

Don't assume that solid fats (like those in chocolate or certain cheeses) automatically digest slower or make you fuller than liquid fats. The stability of the fat emulsion in stomach acid is a critical factor for satiety that simple physical state doesn't capture.

High intake of linoleic acid (LA) does not impair the conversion of alpha-linolenic acid (ALA) to long-chain omega-3s (EPA/DHA) to a clinically significant degree, and the ratio of LA to ALA is less important than absolute intake levels.

You do not need to restrict seed oils to improve your omega-3 status. If you want more EPA/DHA, eat fish or algae supplements directly, as the body's conversion from plant sources (ALA) is inefficient regardless of how much seed oil you eat.

Consumption of a high-fat diet (HFD) induces rapid, transient hypothalamic inflammation and neuronal injury (specifically in POMC neurons) in rodents, which eventually leads to permanent gliosis and neuronal loss with sustained exposure, a process also observed in obese humans via MRI.

Sustained consumption of high-fat diets can cause physical injury to the brain's weight-regulation centers, leading to permanent changes that make weight control more difficult. This suggests that early dietary interventions are critical to prevent this neurological damage.

Elevated serum alanine aminotransferase (ALT) activity in the absence of viral hepatitis or excessive alcohol consumption is associated with an increased calculated 10-year risk of coronary heart disease (CHD), with the association being more prominent in women.

If your blood tests show elevated ALT levels (above 43 IU/L for men, above 30 IU/L for women) and you do not have viral hepatitis or drink heavily, this is a strong indicator of underlying metabolic issues like insulin resistance or fatty liver. These conditions significantly increase your 10-year risk of heart disease, especially for women. You should address this by focusing on metabolic health improvements, such as weight management and reducing refined carbohydrates, rather than ignoring the lab result.

Communicating genetic risk information to patients does not significantly improve weight loss outcomes or adherence compared to standard advice alone.

Getting a genetic test for obesity or diabetes risk does not automatically help you lose weight or stick to a diet. Studies show that simply knowing your risk score does not improve outcomes compared to standard advice. Focus on evidence-based lifestyle changes (diet, exercise) rather than relying on genetic risk information as a motivator.

Elevated TNF-alpha expression in adipose tissue is associated with obesity and insulin resistance in humans, acting as a modulator of gene expression in adipocytes.

Obesity is associated with higher levels of TNF-alpha in fat tissue, which can worsen insulin resistance. This biological reality suggests that weight management may require addressing these underlying metabolic factors, not just calorie restriction.

A low-intensity mobile health intervention (Few Touch Application) combined with or without health counseling does not significantly improve glycated hemoglobin (HbA1c) levels compared to usual care in patients with type 2 diabetes over a 4-month period.

Using a diabetes app or receiving brief phone counseling from a nurse does not guarantee better blood sugar control (HbA1c) than standard care alone in the short term. While these tools may improve self-management skills and confidence, patients should not rely on them as a substitute for comprehensive medical management and lifestyle changes.

The observed 'obesity paradox' in diabetes is likely non-causal and explained by biases such as reverse causation, confounding by fitness, and body composition differences (muscle mass).

Do not interpret the 'obesity paradox' as a reason to gain weight. The survival advantage seen in obese diabetics is likely due to them having more muscle, being fitter, or having less severe disease at diagnosis, not the fat itself. Weight loss interventions are safe and recommended.

Menstrual cycle phase (follicular vs. luteal) and oral contraceptive use (active vs. placebo) do not significantly influence substrate oxidation (carbohydrate and fat ratios) at rest or during moderate-intensity continuous exercise.

You do not need to adjust your carbohydrate or fat intake based on where you are in your menstrual cycle or whether you are on birth control. The science shows that fuel oxidation remains consistent across phases. Focus on consistent nutrition and training intensity rather than trying to 'hack' your cycle for metabolic changes.

Low baseline sympathoadrenal activity, indicated by low 24-hour urinary norepinephrine and epinephrine excretion rates, is associated with greater subsequent body weight gain and increased central adiposity (waist-to-thigh ratio) in humans.

If you have a history of easy weight gain, your body may naturally operate with lower sympathetic nervous system activity, which reduces energy expenditure and promotes fat storage, particularly around the waist. This is a biological predisposition, not a failure of will. To counter this, you may need to be more consistent with physical activity and dietary management than others, as your body is less efficient at burning off excess calories at rest.

Obesity reduces the accuracy of standard asthma biomarkers (FeNO, IgE, eosinophils), potentially leading to misclassification of asthma phenotype and inappropriate biologic eligibility.

If you have obesity, your standard asthma tests (FeNO, IgE) might look lower than they actually are. This doesn't mean your asthma is mild. Doctors should interpret these tests with caution in obese patients and focus on symptom control and quality of life.

Low-dose exposure to persistent organic pollutants (POPs) increases the risk of type 2 diabetes (T2D), primarily through mechanisms involving beta-cell dysfunction and mitochondrial toxicity rather than solely through insulin resistance.

You cannot completely avoid environmental pollutants like PCBs or pesticides, but you can manage their impact. Focus on healthy lifestyle behaviors like regular exercise and calorie restriction, which help eliminate POPs and improve mitochondrial function, thereby reducing your risk of developing type 2 diabetes.

Adipose tissue acts as a double-edged sword regarding POPs: it protects organs by sequestering POPs when healthy, but releases them into circulation during uncontrolled lipolysis (common in obesity or weight loss), increasing toxicity to other organs.

If you are overweight, be aware that rapid weight loss can temporarily spike the levels of environmental toxins in your blood as they are released from fat stores. Focus on gradual weight loss through exercise and a diet rich in phytochemicals, which helps your body eliminate these toxins more effectively.

POPs act as mitochondrial toxins at low doses, causing mitochondrial dysfunction which is a more plausible mechanism for T2D development than endocrine disruption alone.

POPs may damage your mitochondria, the energy powerhouses of your cells, contributing to diabetes. You can counteract this by improving mitochondrial function through exercise, calorie restriction, and eating plant-based foods rich in phytochemicals.

Common obesity is primarily driven by increased energy intake due to a changing food environment overwhelming homeostatic feedback, rather than defective homeostatic regulation.

Focus on the environment. Since homeostatic regulation is likely intact but overwhelmed, successful weight management requires changing the food environment (e.g., reducing access to hyper-palatable foods) and managing hedonic/cognitive triggers, rather than assuming a biological defect.

Higher community population density and greater impervious surface area (urbanization metrics) are associated with significantly lower total physical activity levels in adults.

If you live in a dense urban area, be aware that your total daily movement is likely lower than in rural areas, even if you have access to gyms. To counteract this, you must intentionally incorporate active transport (walking/cycling) and avoid sedentary occupational habits, as urbanization naturally suppresses household and occupational activity.

Among older adults (aged 65+), higher consumption of fish or EPA+DHA is not associated with a reduced risk of hip fracture, and higher EPA+DHA intake may be associated with slightly lower femoral neck bone mineral density (BMD) in those with high linoleic acid intake.

For adults over 65, increasing fish or EPA+DHA intake is unlikely to significantly reduce the risk of hip fractures. While fish is nutritious, it should not be relied upon as a primary strategy for bone protection. Instead, focus on evidence-based interventions such as weight-bearing exercise, fall prevention, and ensuring adequate calcium and vitamin D intake, as other factors appear more critical for bone health in this age group.

Implementation of front-of-package warning labels on high-sugar foods drives food industry reformulation by replacing added sugars with non-nutritive sweeteners (NNS), particularly sucralose and stevia, rather than simply reducing total sugar content.

Regulations forcing sugar reduction often lead manufacturers to add artificial sweeteners instead of just cutting sugar. If you are trying to reduce sugar intake, check the ingredients list for sweeteners like sucralose or stevia; their presence indicates the product was reformulated to meet sugar limits, not necessarily to be healthier overall.

Products that reformulate to avoid 'high in sugar' warning labels are significantly more likely to introduce non-nutritive sweeteners (NNS) than products that do not change their sugar status.

If a product used to have a 'High in Sugar' warning but no longer does, it likely added artificial sweeteners to maintain taste. Look for ingredients like sucralose, aspartame, or stevia on the label to confirm this substitution.

The central nervous system (CNS) acts as a fundamental regulator of glucose homeostasis by establishing a biologically defended level of glycemia (BDLG), and dysfunction in CNS control mechanisms contributes to the pathogenesis of type 2 diabetes (T2D) independently of pancreatic beta cell failure.

Current diabetes treatments often fail to achieve long-term remission because they only address insulin levels, ignoring the brain's role in setting a 'defended' high blood sugar level. Effective management may require strategies that address central nervous system regulation of glucose, not just pancreatic insulin output.