Browse the evidence

Low-glycemic index diets improve insulin sensitivity and glycemic control, primarily through weight loss and reduced postprandial glucose spikes.

Focus on choosing carbohydrates with a lower glycemic index, such as whole grains, legumes, and vegetables. This can help manage blood sugar spikes and support weight loss. Remember that overall diet quality and fiber intake are also important.

High-fiber diets improve insulin sensitivity and glycemic control, primarily through weight loss and reduced postprandial glucose spikes.

Focus on increasing your fiber intake from whole grains, legumes, fruits, and vegetables. This can help manage blood sugar spikes and support weight loss. Aim for 25-38g of fiber per day, depending on your gender and age.

DASH and Mediterranean diets improve insulin sensitivity and glycemic control, primarily through weight loss and improved diet quality.

Focus on eating a variety of whole foods, including fruits, vegetables, whole grains, lean proteins, and healthy fats. Limit sodium, saturated fat, and added sugars. This approach can help manage blood pressure, blood sugar, and weight.

Post-bariatric recurrent weight gain (RWG) can be effectively managed with FDA-approved anti-obesity medications (AOMs) such as GLP-1 receptor agonists (liraglutide, semaglutide), phentermine/topiramate, naltrexone/bupropion, and orlistat, which reduce weight regain or aid weight loss.

If you are gaining weight back after bariatric surgery, talk to your doctor about FDA-approved anti-obesity medications. Drugs like semaglutide (Ozempic/Wegovy) or liraglutide (Saxenda) are specifically approved and shown to help with weight loss and preventing regain. They work by affecting hormones that control hunger and stomach emptying. While they involve injections and can cause nausea, they are a potent tool to avoid more complex revisional surgeries.

Post-bariatric recurrent weight gain (RWG) can be managed with other FDA-approved anti-obesity medications including phentermine/topiramate, naltrexone/bupropion, and orlistat, which reduce weight regain or aid weight loss.

If GLP-1 injections are not suitable or effective for your post-surgery weight regain, ask your doctor about other FDA-approved oral medications. Options include phentermine/topiramate, naltrexone/bupropion, and orlistat. These drugs have different mechanisms and side effect profiles, so your doctor can help you choose the best fit. They are proven to help with weight loss and managing RWG.

Focusing on carbohydrate quality (high fiber, low glycemic load) is more effective for obesity management than restricting carbohydrate quantity (low-carb diets).

Prioritize the type of carbohydrates you eat over the amount. Choose whole grains, legumes, and fruits that are high in fiber and have a low glycemic impact. This approach supports better metabolic health and weight management compared to simply cutting out carbs.

Personalized dietary interventions guided by a dietician are essential for effective obesity treatment, considering individual metabolic needs and health status.

Work with a dietician to create a personalized nutrition plan that fits your health status, metabolic needs, and lifestyle. This approach is more effective than generic dietary advice.

Under energy-matched conditions, low-carbohydrate diets (≤44% TDCI) produce greater reductions in fasting blood glucose, fasting insulin, triglycerides, and HDL cholesterol compared to high-carbohydrate diets (≥45% TDCI).

If you want to improve your fasting blood glucose and insulin levels without changing your total calorie intake, try reducing your carbohydrate intake to below 44% of your total daily calories. This shift, while keeping total energy the same, has been shown to significantly improve these metabolic markers compared to eating more carbohydrates.

Under energy-matched conditions, low-carbohydrate diets (≤44% TDCI) lead to greater reductions in body mass and fat mass compared to high-carbohydrate diets (≥45% TDCI).

If your goal is to lose fat, reducing your carbohydrate intake to below 44% of your total daily calories may be more effective than eating more carbohydrates, even if you keep your total calorie intake the same.

Sustained weight loss exceeding 10 kg through very-low-energy diets (800-853 kcal/day) induces remission of type 2 diabetes by reducing ectopic fat in the liver and pancreas, thereby restoring insulin sensitivity and beta-cell function.

To reverse Type 2 Diabetes, you likely need to lose more than 10% of your body weight. This is best achieved through a medically supervised very-low-calorie diet (around 800-850 calories/day) for 12 weeks, followed by a structured plan to maintain that weight loss. This approach works by removing fat from your liver and pancreas, allowing your body to regulate blood sugar naturally again. It is most effective if you have had diabetes for a short time.

The Mediterranean diet improves glycemic control and cardiovascular risk factors, facilitating remission when associated with sustained weight reduction, primarily through anti-inflammatory effects and improved insulin sensitivity.

Adopting a Mediterranean diet—rich in vegetables, fruits, whole grains, legumes, nuts, and olive oil, with moderate fish and minimal processed meat—can significantly improve blood sugar control and heart health. This diet is recommended as a first-line strategy for Type 2 Diabetes because it is sustainable, safe, and effective, especially when it leads to modest weight loss.

High intake of ultra-processed foods is linked to adverse metabolic outcomes including obesity, type 2 diabetes, and cardiovascular disease, making their limitation a pragmatic strategy for reducing metabolic risk.

Reduce your consumption of ultra-processed foods. They are linked to obesity, diabetes, and heart disease. Prioritize whole, minimally processed foods instead.

Mediterranean and plant-forward dietary patterns improve glycemic control and reduce type 2 diabetes risk more effectively than rigid single-nutrient prescriptions.

Adopt a Mediterranean or plant-forward eating style focusing on whole foods, fiber, and unsaturated fats. Avoid rigid 'diet' labels; prioritize long-term sustainability and individual metabolic response over short-term restriction.

Higher intake of dietary fiber and whole grains is associated with lower T2D risk and improved postprandial metabolic responses.

Increase intake of dietary fiber and whole grains. Differentiate between high-quality, minimally processed carbohydrates and refined starches/sugars.

Higher adherence to a structured behavioral health intervention (dose) and higher quality of implementation (fidelity and quality) significantly predict greater reductions in waist circumference and increases in physical activity levels in overweight/obese adults.

To get the best results from a health intervention, consistency (dose) and the quality of the interaction (fidelity/quality) are critical. Ensure you attend all scheduled sessions and engage actively with your health educator. The study shows that higher adherence and better implementation quality lead to better waist circumference reduction and physical activity increases.

Integrating health and wellness coaching into clinical care at moderate-to-high frequency (at least monthly) results in clinically meaningful weight loss (>5% initial body weight) and improved metabolic risk factors in overweight and obese patients.

To lose weight sustainably, seek a certified health and wellness coach who meets with you at least monthly (or weekly if possible) for at least a year. The coach should help you set specific, measurable goals and solve barriers, rather than just giving you a diet plan. This approach works best when your primary doctor supports the process, even if they aren't the one doing the coaching.

A behavior change intervention targeting diet and physical activity produces significant collateral improvements in perceived stress and sleep duration, comparable to interventions explicitly designed to target stress and sleep.

If you are struggling with stress or poor sleep, start by focusing on getting more physical activity and eating more fruits and vegetables. You do not necessarily need a separate, intensive stress management program. A structured approach to diet and exercise can naturally reduce your stress levels and increase your sleep duration, potentially moving you into the recommended 7-9 hour range.

Very Low Calorie Diets (VLCD) and significant weight loss (>15 kg) can induce remission of type 2 diabetes in obese patients, primarily by reducing liver fat and restoring insulin sensitivity.

For obese individuals recently diagnosed with type 2 diabetes, a medically supervised Very Low Calorie Diet (approx. 830 kcal/day) for 3-5 months offers the highest chance of reversing the disease. The goal is significant weight loss (ideally >15kg), which reduces liver fat and restores insulin sensitivity, potentially allowing patients to stop medication.

A regionally adapted cardioprotective diet (BALANCE Program) improves diet quality and reduces daily food costs compared to generic dietary advice in patients with cardiovascular disease.

If you have heart disease, switching to a diet focused on local fruits, vegetables, and legumes while reducing meat and fish intake can improve your diet quality and save you money daily. This approach works best when tailored to local food availability and prices.

High intake of added sugars and refined carbohydrates is positively associated with elevated triglycerides and reduced HDL, whereas high intake of whole grains is associated with a reduced risk of ischemic cardiovascular disease.

To improve your triglycerides and HDL, focus on reducing added sugars and refined carbohydrates. Conversely, increasing your intake of whole grains can lower your risk of ischemic heart disease by approximately 13% compared to low intake. The source of your carbohydrates is more important than the total amount for these specific markers.

Among older adults in low-income urban settings, insufficient fruit and vegetable intake (<5 servings/day) is significantly associated with higher odds of hypertension and diabetes.

If you live in an urban area and are over 40, aim for at least 5 servings of fruits and vegetables daily to lower your risk of high blood pressure and diabetes. Start by adding one extra serving of a local, affordable vegetable to your main meal.

Physical inactivity, defined as inadequate moderate-to-vigorous physical activity (MVPA) combined with high sedentary time, is significantly associated with higher odds of hypertension and diabetes in older adults.

For adults over 40 in urban areas, staying active is crucial for preventing high blood pressure and diabetes. Aim for at least 150 minutes of moderate activity per week, such as brisk walking, and try to minimize long periods of sitting.

Trans-fatty acids produced through partial hydrogenation increase the risk of ischemic heart disease, whereas saturated and monounsaturated oils are more stable and safer for high-temperature cooking.

When cooking at high heat (frying, searing), use stable fats like butter, ghee, or high-oleic oils. Avoid heating polyunsaturated vegetable oils (like soybean or corn oil) to high temperatures, as they break down into harmful compounds. Trans-fats from partial hydrogenation are harmful and should be avoided.

Adherence to ≥6 unhealthy lifestyle factors (smoking, overweight, physical inactivity, low fruit/veg intake, unbalanced diet) is associated with a 22.67-fold higher risk of stroke compared to 0-1 factors.

Your lifestyle choices compound. Having multiple unhealthy habits (smoking, inactivity, poor diet, overweight) drastically multiplies your stroke risk. To protect yourself, prioritize fixing the most impactful factors first: stop smoking, increase physical activity, and ensure you eat enough fruits and vegetables daily. Even small improvements in these areas significantly lower your risk.