Metabolic Management
|
May 31, 2024

The 3 Key Principles of Insulin Resistance Diet

Medically Reviewed by
Updated On
September 17, 2024

Insulin resistance is a common metabolic dysfunction that increases the risk of many chronic illnesses, such as type 2 diabetes, cardiovascular disease, and obesity. While its mechanisms are complex, ultimately insulin resistance occurs when cells fail to respond appropriately to insulin. 

Consuming a poor diet consisting of high-glycemic, proinflammatory foods is a major risk factor for developing insulin resistance. On the contrary, an anti-inflammatory-based diet can help manage or prevent insulin resistance. This article will discuss in depth how optimal dietary strategies can help manage insulin resistance.

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What Is Insulin Resistance?

Insulin resistance occurs when cells become less responsive to both the signaling and endocrine effects of insulin. When cells have a poor insulin response, it results in elevated blood glucose levels and chronic inflammation. Over time, this causes weight gain and prediabetes, which can progress to type 2 diabetes mellitus.

Lifestyle factors play a significant role in the development of insulin resistance. 

  • Diets high in processed foods, including added sugars, refined carbohydrates, and processed meats, can cause increased pancreatic insulin secretion and a proinflammatory state, increasing the risk of insulin resistance. 
  • Physical inactivity is a known risk factor for developing insulin resistance. 
  • Other lifestyle factors, like chronic stress and poor sleep, and genetic predispositions also increase the risk of developing insulin resistance.

The Importance of Diet in Managing Insulin Resistance

Diet has a significant impact on regulating blood sugar and insulin sensitivity. Consuming foods high in refined carbohydrates and simple sugars can lead to rapid rises in blood sugar. Not only do blood sugar spikes cause the pancreas to release more insulin, but they cause oxidative stress and even damage to the insulin-producing pancreatic beta cells.

Over time, this can contribute to insulin resistance, where cells become less responsive to both the signaling and endocrine effects of insulin.

Obesity is an independent risk factor for insulin resistance. Excess accumulation of adipose tissue is a significant risk factor for developing insulin resistance. Visceral abdominal fat secretes pro-inflammatory cytokines and adipokines, which are known to disrupt insulin signaling pathways and promote insulin resistance. 

The elevated levels of free fatty acids in obesity further exacerbate insulin resistance by interfering with the action of insulin.

3 Key Principles of the Insulin-Resistance Diet

1. High fiber intake.

Dietary fiber intake is inversely proportional to the degree of insulin resistance with a linear relationship. As fiber intake increases, the incidence and severity of insulin resistance decreases. A high-fiber diet should include at least 25 grams (women) or 38 grams (men) of dietary fiber per day.

2. Controlled carbohydrate consumption.

Controlled carbohydrate consumption of ≤ 40% of total daily calories has been shown to improve insulin resistance. Not only does controlled carbohydrate intake improve insulin levels, but it has also been shown to improve lipid profiles and increase adiponectin, an anti-inflammatory, appetite-reducing neurohormone released from adipose tissue.

3. Emphasis on lean proteins and healthy fats.

A high-protein diet consisting of ≥ 30% of total daily calories from lean protein sources has been demonstrated to improve insulin resistance over a lower protein diet. Optimal intake of healthy, anti-inflammatory fats, such as omega-3 fatty acids, significantly reduce insulin resistance and improve metabolic health.

Goals of the Insulin-Resistant Diet

Following an insulin resistance diet has a number of benefits:

  • Regulating blood glucose levels
  • Lowering insulin levels
  • Improving insulin sensitivity
  • Reducing inflammation
  • Improving cholesterol profiles
  • Decreased cardiovascular disease risk
  • Helping maintain a healthy weight

Essential Components of an Insulin-Resistant Diet

Foods to Include

High-Fiber Foods

A high intake of dietary fiber helps control blood glucose and improve insulin sensitivity. Here are good examples of high-fiber foods to include in your diet:

  • Apples
  • Berries
  • Avocados
  • Cruciferous vegetables (broccoli and cauliflower)
  • Leafy greens
  • Sweet potatoes
  • Lentils
  • Beans

Lean Proteins

A diet focused on a higher protein intake helps support a lower carbohydrate intake, which helps control blood glucose and reduce insulin resistance. Both lean animal and plant-based proteins offer glucose-lowering benefits. Consider the following healthy protein sources:

  • Chicken or turkey breast
  • Pork loin
  • Eggs
  • Nuts
  • Legumes (beans, lentils)
  • Quinoa
  • Fatty fish (tuna, salmon)
  • Seafood
  • Greek yogurt

Healthy Fats

Monounsaturated and polyunsaturated fats can each help manage insulin resistance. Omega-3 and omega-6 fatty acids each have important physiologic functions. Omega-3s are particularly beneficial for their anti-inflammatory properties and cardiovascular benefits. 

While omega-6 fatty acids have important roles in various organ systems, too many omega-6 fatty acids from poor sources can promote inflammation. A lower omega-6 to omega-3 ratio improves inflammatory markers and insulin sensitivity.

Good sources of omega-3 fatty acids include:

  • Fatty fish
  • Seafood
  • Flaxseeds
  • Chia seeds
  • Walnuts

Healthy sources of omega-6 fatty acids are found in the following foods:

  • Avocados 
  • Avocado oil
  • Extra virgin olive oil
  • Nuts
  • Eggs

Complex Carbohydrates

Complex carbohydrates are made from whole foods and are less refined, maintaining the micronutrients, antioxidants, and dietary fiber found in the original source. In contrast, refined carbohydrates include foods that are heavily processed and stripped of their nutrients, leaving a product that is much different than its original source. 

Examples of simple carbohydrates include refined white carbohydrates, candies, chips, crackers, baked goods, and sugar-sweetened beverages.  

Good complex carbohydrate sources include:

  • Fruits
  • Vegetables
  • Starchy vegetables
  • Whole grains
  • Quinoa
  • Legumes
  • Nuts
  • Seeds

Foods to Avoid

Processed and ultra-processed foods should be avoided because they are proinflammatory and often cause a high glycemic load. Consuming high amounts of proinflammatory foods long-term leads to chronic inflammation and insulin resistance

Common pro-inflammatory foods are refined sugars, high-fructose corn syrup, artificial sweeteners, refined carbohydrates, trans fats, some saturated fats, processed meats, and excessive alcohol. 

Metabolism of these heavily processed foods causes the body to release proinflammatory cytokines, promoting oxidative stress and chronic inflammation. When refined sugars are consumed in large amounts, it leads to dysregulated blood glucose levels, prediabetes, and type 2 diabetes mellitus. 

Consider minimizing or avoiding these foods altogether:

  • Added sugars
  • High-fructose corn syrup
  • Artificial sweeteners
  • Refined white carbohydrates
  • Trans fats
  • Some saturated fats
  • Processed meats
  • Alcohol

Sample Meal Plan for Insulin Resistance

Below is a sample meal plan for the insulin resistance diet.

Breakfast

  • Option 1: Greek yogurt topped with mixed berries, honey, and chia seeds
  • Option 2: Vegetable omelet made with egg whites, mushrooms, spinach, and peppers, with a side of whole grain avocado toast
  • Drinks: Green tea or black coffee sweetened with honey

Lunch

  • Option 1: Grilled chicken salad with fresh spinach and mixed greens, cherry tomatoes, cucumber, avocado slices, and walnuts, drizzled with an olive oil-based vinaigrette
  • Option 2: Quinoa salad with chickpeas, diced bell peppers, spinach, and lemon juice
  • Drinks: Water or herbal tea

Dinner:

  • Option 1: Baked salmon with roasted Brussels sprouts and sweet potatoes sauteed in extra virgin olive oil
  • Option 2: Turkey stir-fry with broccoli, bell peppers, carrots, and snap peas, with brown rice and ginger
  • Drink: Sparkling water with a splash of lemon and lime

Snacks

  • Handful of almonds and an apple
  • Baby carrots with hummus
  • Dark chocolate and berries

Check out additional meal planning tools utilizing the Diabetes Plate Method.

Managing Insulin Resistance Beyond the Diet

The Role of Physical Activity

Regular physical activity improves overall metabolic health. 

  • Cardiovascular exercise enhances insulin sensitivity by increasing glucose uptake and utilization in muscles. It also helps promote a healthy weight by increasing energy expenditure and promoting fat oxidation. 
  • Strength training, including both weight lifting and bodyweight exercise, improves insulin sensitivity by increasing muscle mass and also increasing glucose uptake into muscles. Strength training helps increase and preserve lean body mass, which supports long-term weight management by increasing resting energy expenditure. 

Monitoring and Adjustments

Regular monitoring of blood glucose levels is necessary to manage insulin resistance. It illustrates how dietary and lifestyle modifications impact blood glucose and insulin levels. By tracking numbers over the course of the day and in response to different foods, patients can see patterns, recognize foods that cause spikes or drops in blood glucose, and make informed adjustments to their diet and lifestyle. 

A personalized care approach allows for tailoring meal plans to individual needs, optimizing blood sugar control and overall health and well-being. 

[signup]

Key Takeaways

  • Diet has a significant impact on regulating blood sugar and insulin sensitivity. 
  • An insulin resistance diet should focus on these foods:some text
    • Complex carbohydrates
    • Dietary fiber
    • Healthy fats
    • Lean proteins
  • It should minimize these foods:some text
    • Added sugars
    • Processed foods
    • Refined carbohydrates
  • By following an insulin resistance diet, patients can manage or prevent insulin resistance and other metabolic disorders.

Insulin resistance is a common metabolic condition that may increase the risk of various health issues, such as type 2 diabetes, cardiovascular disease, and obesity. While its mechanisms are complex, insulin resistance occurs when cells do not respond effectively to insulin. 

Consuming a diet high in high-glycemic, proinflammatory foods may contribute to the development of insulin resistance. On the other hand, an anti-inflammatory-based diet may help support the management of insulin resistance. This article will discuss how dietary strategies can support the management of insulin resistance.

[signup]

What Is Insulin Resistance?

Insulin resistance occurs when cells become less responsive to the effects of insulin. When cells have a poor insulin response, it can result in elevated blood glucose levels and chronic inflammation. Over time, this may contribute to weight gain and prediabetes, which can progress to type 2 diabetes mellitus.

Lifestyle factors play a significant role in the development of insulin resistance. 

  • Diets high in processed foods, including added sugars, refined carbohydrates, and processed meats, may lead to increased pancreatic insulin secretion and a proinflammatory state, potentially increasing the risk of insulin resistance. 
  • Physical inactivity is a known risk factor for developing insulin resistance. 
  • Other lifestyle factors, like chronic stress and poor sleep, and genetic predispositions may also increase the risk of developing insulin resistance.

The Importance of Diet in Managing Insulin Resistance

Diet has a significant impact on regulating blood sugar and insulin sensitivity. Consuming foods high in refined carbohydrates and simple sugars can lead to rapid rises in blood sugar. These blood sugar spikes may cause the pancreas to release more insulin and may contribute to oxidative stress and potential damage to the insulin-producing pancreatic beta cells.

Over time, this may contribute to insulin resistance, where cells become less responsive to insulin.

Obesity is an independent risk factor for insulin resistance. Excess accumulation of adipose tissue is a significant risk factor for developing insulin resistance. Visceral abdominal fat secretes pro-inflammatory cytokines and adipokines, which may disrupt insulin signaling pathways and promote insulin resistance. 

The elevated levels of free fatty acids in obesity may further exacerbate insulin resistance by interfering with the action of insulin.

3 Key Principles of the Insulin-Resistance Diet

1. High fiber intake.

Dietary fiber intake is inversely proportional to the degree of insulin resistance with a linear relationship. As fiber intake increases, the incidence and severity of insulin resistance may decrease. A high-fiber diet could include at least 25 grams (women) or 38 grams (men) of dietary fiber per day.

2. Controlled carbohydrate consumption.

Controlled carbohydrate consumption of ≤ 40% of total daily calories has been shown to support insulin resistance management. Not only may controlled carbohydrate intake support insulin levels, but it has also been shown to improve lipid profiles and increase adiponectin, an anti-inflammatory, appetite-reducing neurohormone released from adipose tissue.

3. Emphasis on lean proteins and healthy fats.

A high-protein diet consisting of ≥ 30% of total daily calories from lean protein sources has been demonstrated to support insulin resistance management over a lower protein diet. Optimal intake of healthy, anti-inflammatory fats, such as omega-3 fatty acids, may help reduce insulin resistance and support metabolic health.

Goals of the Insulin-Resistant Diet

Following an insulin resistance diet may offer several benefits:

  • Supporting blood glucose regulation
  • Helping maintain balanced insulin levels
  • Supporting improved insulin sensitivity
  • Reducing inflammation
  • Supporting healthy cholesterol profiles
  • Helping maintain cardiovascular health
  • Helping maintain a healthy weight

Essential Components of an Insulin-Resistant Diet

Foods to Include

High-Fiber Foods

A high intake of dietary fiber may help support blood glucose control and improve insulin sensitivity. Here are good examples of high-fiber foods to consider including in your diet:

  • Apples
  • Berries
  • Avocados
  • Cruciferous vegetables (broccoli and cauliflower)
  • Leafy greens
  • Sweet potatoes
  • Lentils
  • Beans

Lean Proteins

A diet focused on a higher protein intake may help support a lower carbohydrate intake, which can help manage blood glucose and support insulin resistance management. Both lean animal and plant-based proteins offer potential glucose-lowering benefits. Consider the following healthy protein sources:

  • Chicken or turkey breast
  • Pork loin
  • Eggs
  • Nuts
  • Legumes (beans, lentils)
  • Quinoa
  • Fatty fish (tuna, salmon)
  • Seafood
  • Greek yogurt

Healthy Fats

Monounsaturated and polyunsaturated fats may help support insulin resistance management. Omega-3 and omega-6 fatty acids each have important physiologic functions. Omega-3s are particularly noted for their potential anti-inflammatory properties and cardiovascular benefits. 

While omega-6 fatty acids have important roles in various organ systems, too many omega-6 fatty acids from poor sources may promote inflammation. A lower omega-6 to omega-3 ratio may support improved inflammatory markers and insulin sensitivity.

Good sources of omega-3 fatty acids include:

  • Fatty fish
  • Seafood
  • Flaxseeds
  • Chia seeds
  • Walnuts

Healthy sources of omega-6 fatty acids are found in the following foods:

  • Avocados 
  • Avocado oil
  • Extra virgin olive oil
  • Nuts
  • Eggs

Complex Carbohydrates

Complex carbohydrates are made from whole foods and are less refined, maintaining the micronutrients, antioxidants, and dietary fiber found in the original source. In contrast, refined carbohydrates include foods that are heavily processed and stripped of their nutrients, leaving a product that is much different than its original source. 

Examples of simple carbohydrates include refined white carbohydrates, candies, chips, crackers, baked goods, and sugar-sweetened beverages.  

Good complex carbohydrate sources include:

  • Fruits
  • Vegetables
  • Starchy vegetables
  • Whole grains
  • Quinoa
  • Legumes
  • Nuts
  • Seeds

Foods to Avoid

Processed and ultra-processed foods may be avoided because they are proinflammatory and often cause a high glycemic load. Consuming high amounts of proinflammatory foods long-term may lead to chronic inflammation and insulin resistance

Common pro-inflammatory foods are refined sugars, high-fructose corn syrup, artificial sweeteners, refined carbohydrates, trans fats, some saturated fats, processed meats, and excessive alcohol. 

Metabolism of these heavily processed foods may cause the body to release proinflammatory cytokines, promoting oxidative stress and chronic inflammation. When refined sugars are consumed in large amounts, it may lead to dysregulated blood glucose levels, prediabetes, and type 2 diabetes mellitus. 

Consider minimizing or avoiding these foods altogether:

  • Added sugars
  • High-fructose corn syrup
  • Artificial sweeteners
  • Refined white carbohydrates
  • Trans fats
  • Some saturated fats
  • Processed meats
  • Alcohol

Sample Meal Plan for Insulin Resistance

Below is a sample meal plan for the insulin resistance diet.

Breakfast

  • Option 1: Greek yogurt topped with mixed berries, honey, and chia seeds
  • Option 2: Vegetable omelet made with egg whites, mushrooms, spinach, and peppers, with a side of whole grain avocado toast
  • Drinks: Green tea or black coffee sweetened with honey

Lunch

  • Option 1: Grilled chicken salad with fresh spinach and mixed greens, cherry tomatoes, cucumber, avocado slices, and walnuts, drizzled with an olive oil-based vinaigrette
  • Option 2: Quinoa salad with chickpeas, diced bell peppers, spinach, and lemon juice
  • Drinks: Water or herbal tea

Dinner:

  • Option 1: Baked salmon with roasted Brussels sprouts and sweet potatoes sauteed in extra virgin olive oil
  • Option 2: Turkey stir-fry with broccoli, bell peppers, carrots, and snap peas, with brown rice and ginger
  • Drink: Sparkling water with a splash of lemon and lime

Snacks

  • Handful of almonds and an apple
  • Baby carrots with hummus
  • Dark chocolate and berries

Check out additional meal planning tools utilizing the Diabetes Plate Method.

Managing Insulin Resistance Beyond the Diet

The Role of Physical Activity

Regular physical activity may improve overall metabolic health. 

  • Cardiovascular exercise may enhance insulin sensitivity by increasing glucose uptake and utilization in muscles. It also helps promote a healthy weight by increasing energy expenditure and promoting fat oxidation. 
  • Strength training, including both weight lifting and bodyweight exercise, may improve insulin sensitivity by increasing muscle mass and also increasing glucose uptake into muscles. Strength training may help increase and preserve lean body mass, which supports long-term weight management by increasing resting energy expenditure. 

Monitoring and Adjustments

Regular monitoring of blood glucose levels is important to manage insulin resistance. It illustrates how dietary and lifestyle modifications impact blood glucose and insulin levels. By tracking numbers over the course of the day and in response to different foods, individuals can see patterns, recognize foods that cause spikes or drops in blood glucose, and make informed adjustments to their diet and lifestyle. 

A personalized care approach allows for tailoring meal plans to individual needs, optimizing blood sugar control and overall health and well-being. 

[signup]

Key Takeaways

  • Diet has a significant impact on regulating blood sugar and insulin sensitivity. 
  • An insulin resistance diet may focus on these foods:
    • Complex carbohydrates
    • Dietary fiber
    • Healthy fats
    • Lean proteins
  • It may minimize these foods:
    • Added sugars
    • Processed foods
    • Refined carbohydrates
  • By following an insulin resistance diet, individuals may support the management of insulin resistance and other metabolic conditions.
The information provided is not intended to be a substitute for professional medical advice. Always consult with your doctor or other qualified healthcare provider before taking any dietary supplement or making any changes to your diet or exercise routine.

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Hey Practitioners! Ready to become a world class gut health expert? Join Jeannie Gorman, MS, CCN, for a Free Live Class that dives into how popular diets impact the gut microbiome, the clinical dietary needs of your gut, biomarkers to test to analyze gut health, and gain a clear understanding of the Doctor’s Data GI360™ profile. Register here.