Browse the evidence

Lactobacillus sp. supplementation significantly decreases leptin levels and increases adiponectin levels in non-comorbid obese individuals.

Lactobacillus supplementation may help improve your hormonal profile by lowering leptin (which can promote fat storage) and raising adiponectin (which improves insulin sensitivity and fat burning). This hormonal shift supports weight management efforts.

Ketogenic diets are effective for fat mass reduction but are less effective than carbohydrate-rich diets for muscle mass gain, potentially due to reduced testosterone and IGF-1 levels.

If your main goal is to build muscle, avoid ketogenic diets as they may hinder growth. If your goal is fat loss, keto works, but monitor your strength training performance.

Intermittent Fasting (IF) produces weight loss comparable to continuous caloric restriction, but is generally not recommended for Type 2 Diabetes patients due to hypoglycemia risk.

Intermittent fasting can help you lose weight just as well as counting calories every day. However, if you have Type 2 Diabetes, do not try this without a doctor's supervision due to the risk of low blood sugar.

Increasing the regularity of meal times (reducing mealtime variability) leads to significant weight loss without requiring calorie restriction or changes in macronutrient composition.

Use a smartphone app to track your meals for two weeks to identify your most frequent eating times. Then, create a personalized schedule that restricts your meals to those specific times for six weeks. Do not worry about changing what or how much you eat; focus only on making your meal times consistent and regular. This approach led to an average weight loss of 2.6 kg in the study without calorie counting.

Personalizing meal schedules to an individual's chronotype (specifically aligning meal times with their mid-sleep phase) enhances weight loss effectiveness compared to generic regularity.

If you have a flexible schedule, try to align your main meals with your natural sleep rhythm. If you are a 'night owl', your optimal eating window might be later than the standard 9-5 worker's. The study suggests that correcting large discrepancies between your workday and weekend eating times (meal jet lag) can boost weight loss.

Intermittent fasting (IF) produces weight loss comparable to continuous calorie restriction while offering superior improvements in insulin sensitivity and lipid profiles through a metabolic switch to ketone-based energy.

Intermittent fasting is a viable weight loss strategy that works as well as traditional calorie counting but may offer better metabolic benefits like improved insulin sensitivity. You can choose from several methods: eating normally on 2 days and restricting calories on 2 others (5:2), alternating between fasting and eating days (ADF), or limiting your daily eating to an 8-hour window (16:8). The key is consistency and allowing your body to switch from burning glucose to burning fat (ketones). Start with a protocol that fits your lifestyle, such as 16:8, and adjust based on your hunger and energy levels.

Combining 16:8 time-restricted eating (TRE) with structured exercise yields modest additional reductions in body weight and fat mass compared to exercise alone.

If you already exercise regularly, adding a 16:8 time-restricted eating schedule (fasting for 16 hours, eating within 8 hours) may help you lose an extra 1-1.5 kg of body weight and about 1 kg of fat mass over 4-8 weeks compared to exercising without dietary timing restrictions. This benefit is modest but real, particularly if you perform aerobic exercise.

Aerobic exercise combined with 16:8 TRE yields greater reductions in body weight and fat mass than resistance training combined with 16:8 TRE.

If you prefer resistance training, adding 16:8 TRE may still help with fat loss, but the additional benefit from TRE appears greater when combined with aerobic exercise. For maximal short-term fat loss with TRE, aerobic exercise may be the more synergistic choice.

Long-term consumption of diets rich in dietary polyphenols (including flavonoids, phenolic acids, and stilbenes) provides protection against oxidative stress-induced chronic diseases such as neurodegenerative disorders, cardiovascular diseases, cancer, and diabetes.

Prioritize a diet rich in diverse plant foods known for high polyphenol content, such as berries, tea, coffee, dark chocolate, nuts, and olive oil. This dietary pattern is associated with reduced risk of chronic oxidative stress-related diseases. Focus on variety and long-term consistency rather than isolated high-dose supplements.

Coffee consumption (>3 cups/day) has a protective role and improves liver enzymes in individuals at risk of liver diseases.

Drinking more than 3 cups of coffee daily may help protect liver health and improve enzymes.

Caloric restriction, exercise, and circadian rhythm calibration are health-promoting activities that delay aging and extend healthspan.

To delay aging, incorporate caloric restriction, regular exercise, and consistent circadian rhythms into your routine. These behaviors are proven to extend healthspan.

The effectiveness of exercise for depression is moderated by participant sex and age, with specific modalities performing better for specific demographics.

To maximize benefits, consider your demographics. Women may find strength training and cycling more effective for depression. Men may find yoga, tai chi, or aerobic exercise combined with therapy more effective. Older adults may benefit more from yoga and aerobic therapy, while younger adults may benefit more from strength training.

The Mediterranean diet, characterized by high intake of polyphenols, fiber, and omega-3 fatty acids, counteracts oxidative stress and insulin resistance in Type 2 Diabetes by activating the NRF2 antioxidant pathway and reducing pro-inflammatory eicosanoids.

Adopt a Mediterranean-style eating pattern focusing on vegetables, fruits, whole grains, legumes, nuts, and extra virgin olive oil. Limit meat and processed foods. This approach helps manage oxidative stress and insulin resistance through natural antioxidants and anti-inflammatory fats.

Intermittent fasting (IF) and time-restricted feeding (TRF) reduce oxidative stress and inflammation in Type 2 Diabetes by activating AMPK and SIRT3, which promotes autophagy and mitochondrial biogenesis.

Consider time-restricted feeding by limiting your eating window to 8-10 hours per day. If using intermittent fasting, restrict energy intake by 60% on 2-3 days a week. Monitor blood glucose closely, especially if taking diabetes medication, to avoid hypoglycemia.

Physical exercise induces transient oxidative stress (hormesis) which triggers adaptive responses, including increased antioxidant enzyme activity (SOD, CAT, GPx) and mitochondrial biogenesis, ultimately reducing baseline oxidative stress in Type 2 Diabetes.

Engage in regular physical exercise, including moderate-intensity, resistance, or high-intensity interval training. While exercise temporarily increases oxidative stress, this triggers your body to produce more antioxidant enzymes and improve mitochondrial health, reducing overall oxidative stress.

Empiric vitamin D supplementation is recommended for children/adolescents (1-18 years), adults ≥75 years, pregnant individuals, and those with high-risk prediabetes to prevent specific adverse outcomes, whereas supplementation beyond Dietary Reference Intakes (DRI) is not recommended for healthy adults under 75.

If you are pregnant, over 75, have high-risk prediabetes, or are a child/teen, take daily vitamin D (typically 600-3500 IU depending on group) via food or supplements. If you are a healthy adult under 75, stick to the standard Dietary Reference Intake (600-800 IU) and do not test your levels or take extra doses, as there is no evidence it prevents disease in you.

Drug repurposing using agents such as metformin (implied by insulin sensitizers), pioglitazone, empagliflozin, sitagliptin, liraglutide, statins (simvastatin, atorvastatin), and N-acetyl cysteine shows supporting data for managing PCOS by targeting insulin resistance, hyperandrogenism, and oxidative stress.

If lifestyle changes are insufficient, discuss repurposed medications with your doctor. Options include insulin sensitizers (like metformin or pioglitazone), SGLT2 inhibitors (empagliflozin), GLP-1 agonists (liraglutide), statins, and N-acetyl cysteine. These target underlying metabolic and hormonal issues.

Supplements including Vitamin D, Resveratrol, Alpha-lipoic acid, Omega-3, Berberine, Folic acid, Myoinositol (MI), and D-chiro-inositol (DCI) are effective adjunctive therapies for PCOS, improving insulin sensitivity, lipid profiles, and ovulation.

Consider adding specific supplements to your regimen: Vitamin D (especially in cold seasons), Resveratrol, Alpha-lipoic acid, Omega-3, Berberine, Folic acid, Myoinositol, and D-chiro-inositol. These may improve insulin sensitivity and lipid profiles.

Lifestyle management, including healthy lifestyle and emotional well-being, is a core component of PCOS care, with a specific emphasis on avoiding weight stigma.

Focus on healthy habits and mental well-being, not just weight loss. If you have PCOS, your care should include support for your emotional health and quality of life, without judgment about your weight.

Lower circulating taurine concentrations in humans are associated with adverse health outcomes including abdominal obesity, hypertension, inflammation, and type 2 diabetes.

Maintaining healthy taurine levels through diet or supplementation might be beneficial for metabolic health, as low levels are linked to obesity and diabetes. However, more research is needed to confirm if supplementation directly improves these conditions in humans.

Aerobic and resistance training are both effective for reducing depressive symptoms, but mixed training (aerobic + resistance) showed smaller effects in subgroup analysis.

You can choose either aerobic exercise (like running or cycling) or resistance training (weight lifting) to treat depression; both are highly effective. You do not necessarily need to combine them, as the data suggests mixed training showed smaller effects in this analysis.

Emotional eating acts as a behavioral mediator linking psychological distress (depression, anxiety, stress) to increased body weight and obesity.

If you find yourself eating more when stressed or sad, recognize this as 'emotional eating.' It is a learned behavior that links mood to weight gain. To break the cycle, focus on developing non-food coping strategies for negative emotions, such as stress management techniques or therapy, rather than just restricting food intake.

Emotional eating is associated with the consumption of energy-dense, nutrient-poor foods (sugary and high-fat snacks), contributing to weight gain.

Emotional eaters tend to choose high-fat, sugary snacks when stressed. To mitigate weight gain, be aware that your food choices under stress are likely to be energy-dense. Planning healthier snacks or strategies to manage stress directly can reduce the intake of these specific food types.

Consumption of carbohydrates with a high glycemic index (GI) shortly before bedtime reduces sleep latency (time to fall asleep) by increasing insulin-mediated tryptophan transport to the brain, whereas high-GI diets consumed chronically increase the risk of insomnia.

If you struggle to fall asleep, try eating a carbohydrate-rich meal (like pasta or rice) about 4 hours before bed. The resulting insulin spike helps tryptophan enter your brain, potentially speeding up sleep onset. However, do not make high-sugar/refined carb foods your daily staple, as this chronic pattern increases the risk of developing insomnia.