Browse the evidence

Subclinical hypothyroidism (SHypo) is more prevalent in patients with Type 2 Diabetes (T2D) than in the general population and is associated with an increased risk of diabetic microvascular complications.

If you have Type 2 Diabetes, you are nearly twice as likely to have subclinical hypothyroidism compared to someone without diabetes. This condition is linked to a higher risk of eye, kidney, and nerve complications. Regular thyroid screening is part of comprehensive diabetes care.

Intense exercise (above 60% VO2max) causes gastrointestinal hyperpermeability ('leaky gut') and endotoxemia by reducing splanchnic blood flow and increasing stress hormones, which can be mitigated by microbiota-derived Short Chain Fatty Acids (SCFAs) that strengthen the intestinal barrier.

When you train hard (>60% max effort), your body diverts blood away from your gut, causing 'leaky gut' and allowing toxins (LPS) into your bloodstream, which causes inflammation and fatigue. You can't always avoid this stress, but you can strengthen your gut barrier. Consume prebiotics and probiotics to boost Short Chain Fatty Acids (like butyrate), which act as fuel for gut cells and tighten the intestinal barrier, helping you handle intense training with less systemic inflammation.

Consumption of high-fructose meals in women significantly reduces circulating insulin and leptin levels and attenuates postprandial ghrelin suppression compared to isocaloric high-glucose meals, while increasing plasma triglycerides.

For women, replacing glucose with fructose in beverages (while keeping total calories and macronutrients the same) blunts the body's natural satiety signals (insulin and leptin) and reduces the suppression of hunger hormones (ghrelin). This hormonal profile—lower satiety signals and higher triglycerides—may encourage increased caloric intake and contribute to weight gain over time, even if the meal itself is not larger.

Roux-en-Y gastric bypass (RYGB) surgery significantly reduces the incidence of new-onset type 2 diabetes and hypertension compared to non-surgical controls over a 6-year period.

RYGB surgery not only aids weight loss but also drastically lowers the risk of developing new-onset type 2 diabetes (89% reduction in odds) and significantly improves hypertension remission rates compared to non-surgical management in severely obese patients.

High-catechin green tea extract reduces systolic blood pressure in individuals with initial systolic blood pressure of 130 mm Hg or higher, but not in those with lower initial blood pressure.

If you have mild hypertension (SBP >= 130 mm Hg) and visceral obesity, consuming ~583 mg of catechins daily from green tea extract may help lower your systolic blood pressure. This effect was not seen in individuals with normal blood pressure.

High-catechin green tea extract reduces LDL cholesterol levels in humans with visceral fat-type obesity.

If you have visceral obesity, drinking a beverage providing ~583 mg of catechins daily (approx. 1.7 cans of the specific high-catechin extract used) for 12 weeks, while maintaining your usual diet and exercise, may help reduce LDL cholesterol. This is a supportive intervention for cardiovascular health.

The improvement in resistance artery endothelial function (forearm blood flow response to acetylcholine) following weight loss is mediated by increased nitric oxide (NO) bioavailability and is related to reductions in abdominal visceral fat.

Losing abdominal visceral fat through weight loss helps your small blood vessels function better by increasing the availability of nitric oxide, a molecule that helps blood vessels relax and widen. This suggests that targeting visceral fat is crucial for vascular health.

BPD permanently normalizes serum glucose and cholesterol in diabetic and hypercholesterolemic patients through specific metabolic actions independent of weight loss.

BPD can cure type 2 diabetes and high cholesterol through specific hormonal and metabolic changes in the gut, not just by losing weight. Many patients see normal blood sugar and cholesterol levels within a month of surgery, often allowing them to stop medications entirely.

Delaying meal timing by 5 hours in healthy young men significantly delays the phase of plasma glucose circadian rhythms and reduces mean plasma glucose concentration, while delaying white adipose tissue (WAT) PER2 clock gene expression, without affecting the central master clock (melatonin/cortisol) or insulin/triglyceride rhythms.

If you work shifts or have jet lag, try shifting your main meals later to align with your new schedule. This won't change your sleep hormone (melatonin) timing, but it will help synchronize your body's peripheral clocks (like those in your fat tissue) and improve how your body handles glucose throughout the day. Keep meals isocaloric and consistent in composition.

Leptin has direct peripheral actions on immune cells, pancreatic beta cells, adipocytes, and skeletal muscle, influencing processes like fatty acid metabolism and insulin sensitivity.

Leptin doesn't just affect your brain; it directly influences how your muscles burn fat and how your pancreas handles insulin. This highlights the systemic nature of metabolic regulation.

Orlistat improves glycemic control and reduces the need for diabetes medication in patients with Type 2 Diabetes, independent of weight loss alone.

If you have Type 2 Diabetes, Orlistat can help lower your blood sugar and HbA1c levels more than diet alone, potentially allowing you to reduce your diabetes medication dosage. This benefit appears to go beyond just the weight loss itself.

Women with type 2 diabetes face a significantly higher relative risk of cardiovascular disease and mortality compared to men, despite often being diagnosed at a lower body mass index and younger age.

If you are a woman with type 2 diabetes, your risk of heart disease and death is higher relative to a man with diabetes, even if your weight is lower. This risk is amplified by hormonal changes like menopause and pregnancy history. You need aggressive management of blood pressure, lipids, and glucose, potentially starting earlier than guidelines might suggest for men, because your body may have more advanced heart vessel damage at the time of diagnosis.

Leptin levels can be used to adjust BMI estimates to better predict percent body fat, particularly in women with high leptin levels (>30 ng/mL).

If you are a woman with high body fat but a 'normal' BMI, ask your doctor about checking your leptin level. It might help explain your health risks. A high leptin level suggests your body is resisting the hormone that controls hunger, which is common in obesity.

Dietary intake of n-3 polyunsaturated fatty acids (specifically DHA and EPA from fish oil) preferentially inhibits Toll-like receptor (TLR2 and TLR4) signaling, thereby suppressing the expression of inflammatory markers like COX-2 and NF-kB activation in immune cells.

To reduce inflammatory signaling in your immune cells, prioritize high doses of n-3 polyunsaturated fatty acids (found in fish oil, specifically DHA and EPA). This paper suggests that a high intake (around 15g of fish oil daily in the study context) is required to significantly suppress the inflammatory response triggered by immune challenges. Conversely, high intake of saturated fats (like lauric acid) may exacerbate this inflammatory signaling.

Weight loss in obese individuals significantly reduces elevated serum Tumor Necrosis Factor-alpha (TNFα) concentrations, which may contribute to the restoration of insulin sensitivity.

For obese individuals, losing weight through a caloric deficit and exercise can lower inflammatory markers like TNFα. This biological improvement may help restore the body's sensitivity to insulin, making further weight management potentially easier over time.

Abdominal obesity in women causes reproductive disorders, including anovulation and infertility, primarily through functional hyperandrogenism and hyperinsulinemia which overstimulate ovarian steroidogenesis and decrease sex hormone-binding globulin.

If you have abdominal obesity and are struggling with irregular periods or infertility, your body's high insulin levels may be driving excess androgen production, which stops ovulation. The most effective first step is often modest weight loss (even 5-10%) combined with lifestyle changes to improve insulin sensitivity, which can restore ovulation and fertility without needing immediate pharmacological intervention.

24 hours of wakefulness reduces the amplitude of daily metabolic rhythms (cosinor amplitude) for the majority of metabolites, particularly those that peak during the day.

Staying awake for 24 hours flattens the natural daily ups and downs of your metabolism. This means your body's normal timing for processing nutrients and hormones gets disrupted, which can affect how you feel and perform.

Administration of Akkermansia muciniphila improves metabolic profiles, reduces fat mass, and improves insulin sensitivity in obese and diabetic subjects.

Focus on prebiotics that support the growth of Akkermansia muciniphila. This bacteria is naturally low in obese/diabetic individuals, and restoring its levels is linked to better insulin sensitivity and reduced inflammation.

Gut-derived satiety peptides, specifically GLP-1 and PYY(3-36), reduce food intake and promote weight loss through vagal afferent signaling and hindbrain/hypothalamic receptors.

Your gut naturally releases hormones like GLP-1 and PYY after eating to tell your brain you are full. Medical treatments can mimic these hormones to help reduce appetite and aid weight loss, particularly in obesity.

Regular aerobic exercise reverses age-related endothelial progenitor cell (EPC) dysfunction by increasing both the number and migratory activity of EPCs in older adults.

If you are an older adult who has been sedentary, starting regular aerobic exercise can help restore your body's ability to repair blood vessels by increasing the number and activity of endothelial progenitor cells. This is a direct countermeasure to age-related vascular decline.

Smoking cessation improves insulin sensitivity and cardiovascular risk factors despite associated weight gain.

Even if you gain weight after quitting, your body's ability to handle sugar and your heart health will improve. This is a net positive for your long-term health.

Endurance training can induce muscle hypertrophy (7-11% increase in mass) in the quadriceps, particularly in sedentary individuals or those with limited exercise experience, through mechanisms independent of mTORC1.

If you are new to exercise or sedentary, starting an endurance program like cycling will likely build muscle in your legs, not just burn calories. This hypertrophy is comparable to what you might see from resistance training over the same period.

Obesity-induced chronic low-grade inflammation in adipose tissue, driven by immune cell infiltration and pro-inflammatory cytokine secretion (TNF-α, IL-6, IL-1β), directly causes insulin resistance by disrupting insulin signaling cascades in metabolic tissues.

Focus on reducing systemic inflammation through diet, not just weight loss. The paper highlights that obesity creates an inflammatory environment in fat tissue that directly blocks insulin action. Nutritional strategies that reduce this inflammation (e.g., anti-inflammatory nutrients) may help improve insulin sensitivity independently of or alongside weight management.

Weight reduction improves insulin sensitivity and reduces hepatic VLDL-triglyceride production rates, supporting a mechanism where insulin resistance drives hypertriglyceridemia.

High insulin levels drive high triglycerides by telling the liver to produce more fat-carrying particles. Losing weight reduces this insulin drive, allowing the liver to produce fewer triglycerides. This suggests that managing insulin sensitivity is key to managing blood fats.