Video Summary

12 Signs You’re Becoming Insulin Resistant (Even With Normal Blood Sugar)

Doctor Alex

Main takeaways
01

Insulin resistance can develop for years while blood sugar tests remain normal because the pancreas compensates with higher insulin.

02

Early warning signs include increased hunger after meals, strong carb/sugar cravings, daytime energy crashes, and brain fog.

03

Physical clues: increasing waist size, difficulty losing weight, skin tags, and darkened skin folds (acanthosis nigricans).

04

Cardio-metabolic markers: high blood pressure, high triglycerides with low HDL, and fatty liver often appear before glucose abnormalities.

05

A fasting insulin test and HOMA-IR (fasting glucose + fasting insulin) detect insulin resistance earlier than fasting glucose or HbA1c alone.

Key moments
Questions answered

Why can fasting glucose remain normal even when insulin resistance is present?

The pancreas compensates by producing extra insulin so glucose stays normal for years; elevated insulin masks the underlying resistance until compensation fails.

Which skin findings should prompt consideration of insulin resistance?

Multiple skin tags and darkened, velvety skin folds (acanthosis nigricans), especially on the neck or armpits, are classic physical signs.

What blood test detects insulin resistance earlier than standard glucose tests?

A fasting insulin test — and the combined HOMA-IR score (fasting insulin plus fasting glucose) — reveals elevated insulin and early resistance.

How can you use waist measurements to assess metabolic risk?

Calculate waist-to-height ratio (waist at belly button ÷ height). A ratio above ~0.5 indicates excess central fat and higher metabolic risk.

What simple lifestyle steps can improve insulin sensitivity right away?

Eat higher-fiber, higher-protein meals, cut refined carbs, cook more whole-food meals, and try short walks (e.g., 10 minutes) after eating to boost glucose uptake.

Understanding Insulin Resistance 02:35

"Insulin resistance affects the majority of adults in the modern western world, even if blood sugar tests appear normal."

  • Insulin resistance is a condition where the body's cells struggle to respond to insulin, a hormone that helps regulate blood sugar levels. This can occur even when blood sugar levels appear normal.

  • It is important to recognize that insulin resistance can affect anyone, not just individuals with diabetes. In fact, many people may be unknowingly on the path to type 2 diabetes due to insulin resistance.

  • The development of insulin resistance can take years or even decades, often going unnoticed until blood sugar levels become abnormal. The underlying metabolic issues usually occur long before a diagnosis is made.

The Importance of Early Detection 07:00

"Most people never see the warning signs of insulin resistance coming, primarily because they are not aware of what to look out for."

  • Recognizing the signs of insulin resistance early is crucial, as damages to various bodily systems can begin long before a diabetes diagnosis is made.

  • When insulin resistance worsens, it begins to impact blood vessels, the liver, the brain, the kidneys, and metabolism, highlighting the importance of identifying symptoms before they escalate into more significant health issues.

  • A normal blood sugar reading does not guarantee metabolic health, underscoring the need for awareness regarding symptoms of insulin resistance.

Sign of Increased Hunger After Meals 05:06

"Feeling hungry again soon after eating could indicate insulin resistance."

  • Experiencing hunger soon after having a meal can be a sign of insulin resistance, especially if this pattern occurs repeatedly. The phenomenon stems from the rapid drop in blood sugar that follows a meal high in refined carbohydrates or sugars.

  • When insulin shoots up quickly in response to high sugar intake, but the body's cells are resistant, glucose fails to enter the cells effectively. This results in a significant drop in blood sugar, causing an urgent hunger response from the brain.

Cravings for Carbohydrates and Sugar 06:10

"Compulsive cravings for carbohydrates and sugars often reflect swings in blood sugar levels due to insulin resistance."

  • Insulin resistance often leads to compulsive cravings for sugary and starchy foods. This could manifest as an intense desire for bread, sweets, or any refined carbohydrate.

  • These cravings are linked to fluctuating blood sugar levels, where quick spikes and subsequent drops create a cycle of hunger. Consuming carbohydrates leads to spikes in blood sugar and insulin, followed by crashes that trigger further cravings, perpetuating the cycle.

Energy Crashes After Meals 07:00

"Feeling excessively tired after eating is a common metabolic sign of insulin resistance."

  • Experiencing energy crashes after meals is often misunderstood as simply being overworked or needing coffee, but it can indicate underlying metabolic issues.

  • After eating, a surge of insulin leads to a subsequent drop in blood sugar levels, which may leave the body without adequate fuel. This can result in fatigue and difficulty maintaining energy throughout the day.

Brain Fog and Concentration Issues 07:49

"Difficulty concentrating or experiencing brain fog can be a sign that your metabolism is not functioning optimally."

  • Many individuals describe having trouble focusing or feeling mentally sluggish, especially after consuming a meal high in carbohydrates, which signals possible insulin resistance.

  • The brain, a highly metabolically active organ, requires stable glucose levels to function effectively. Resistance to insulin can disrupt this stability, leading to cognitive issues and affecting overall brain health. Some researchers associate this decline with diseases such as Alzheimer's, coining it "type 3 diabetes."

Measuring Body Fat and Insulin Resistance 09:11

"A quick way to check this at home is to measure your waist to height ratio."

  • For assessing the level of fat stored in your body, especially the fat around your organs, a practical approach is to calculate your waist-to-height ratio. To do this, measure your waist at the level of your belly button and divide that measurement by your height. For example, if you are 180 cm tall, your waist measurement should ideally be below 90 cm.

Struggles with Weight Loss Despite Efforts 09:43

"Insulin is fundamentally a fat storage hormone."

  • Many individuals find it frustrating to lose weight despite exercising and eating well. This difficulty can be linked to chronically elevated insulin levels, which promote energy storage after meals and inhibit fat release between meals. This doesn't make weight loss impossible; however, it complicates the process significantly. To counteract this, focusing on meals rich in protein and fiber while avoiding refined carbohydrates can stabilize insulin levels throughout the day.

The Importance of Cooking and Meal Composition 10:39

"The best way to achieve a goal is to become interested in cooking and making colorful meals."

  • Embracing cooking not only makes meals enjoyable but also allows for the creation of vibrant dishes that incorporate a variety of textures and nutritious ingredients. This exploration of dietary patterns is essential, as settling into nutrient-rich habits, such as the Mediterranean diet, is consistently associated with better metabolic health. A simple yet effective step to take is to purchase a recipe book that emphasizes high-fiber, protein-rich cooking.

Skin Tags as a Sign of Insulin Resistance 11:14

"Skin tags are commonly associated with insulin resistance."

  • Skin tags, small soft growths typically appearing around the neck or armpits, can indicate insulin resistance due to insulin's role as a growth factor. While occasional skin tags are quite normal, a significant number appearing can signal potential insulin issues, especially if accompanied by other symptoms discussed in the video.

Darkened Skin Folds: A Classic Indicator 12:08

"Acanthosis nigricans is a direct physical response to chronically elevated insulin."

  • Darkened skin folds, known as acanthosis nigricans, appear as hardened velvety patches on the back of the neck or armpits, signifying elevated insulin levels stimulating melanocyte activity. Dermatologists recognize this condition as a classic sign of notable insulin resistance, and noticing it should prompt a discussion with a healthcare provider.

Impact of Insulin Resistance on Blood Pressure 13:00

"Insulin resistance affects the cardiovascular system in many ways."

  • Insulin resistance has detrimental effects on blood pressure and cardiovascular health. High insulin levels can lead to sodium retention by the kidneys and stiffening of blood vessel walls, consequently raising blood pressure. Often, individuals discover metabolic issues like insulin resistance when high blood pressure is detected during routine check-ups.

Abnormal Cholesterol Levels as a Metabolic Signal 13:47

"The classic picture here is high triglycerides and low HDL."

  • A common metabolic indicator of insulin resistance is abnormal cholesterol levels, particularly characterized by high triglycerides and low HDL ("good" cholesterol). When the liver, overwhelmed by excess glucose, converts it into fat, it results in increased triglycerides while simultaneously lowering HDL levels. This specific cholesterol pattern can emerge years before blood sugar levels begin to rise, highlighting its significance.

Pre-Diabetes as a Warning Sign 14:51

"Pre-diabetes is one of the most reversible points on this spectrum."

  • The onset of pre-diabetes, indicated by rising blood sugar levels or an HBA1C within the pre-diabetes range, signifies that insulin resistance is starting to manifest in measurable ways. Despite being a significant alert to health issues, pre-diabetes is also one of the most reversible conditions, making medical intervention at this stage crucial.

The Severity of Fatty Liver Disease 15:49

"Fatty liver disease can progress to inflammation, scarring, and liver failure."

  • As insulin resistance becomes more prevalent, fatty liver disease is emerging as a serious health concern. As insulin resistance impedes glucose uptake, excess glucose is converted into fat and stored in the liver. This accumulation can lead to non-alcoholic fatty liver disease and potentially advance to severe complications, including cirrhosis or liver failure. Alarmingly, most individuals with fatty liver disease remain asymptomatic until the condition is detected through routine medical imaging or blood tests.

Reversing Insulin Resistance Through Dietary Changes 17:00

"Increasing fiber and protein in your meals can make a massive difference."

  • Encouragingly, insulin resistance is one of the most reversible metabolic problems, and significant improvements can be made with just a couple of lifestyle adjustments. These include increasing the intake of fiber and protein to manage blood sugar levels and reduce insulin spikes. Additionally, a simple habit of walking for just 10 minutes after meals can facilitate glucose uptake by the muscles, further supporting insulin sensitivity.

Understanding Insulin Resistance 18:16

"Having one of these signs doesn't mean that you're definitely insulin resistant, but having several of them together is really worth taking seriously."

  • Insulin resistance may not present obvious symptoms, making it crucial to be aware of multiple signs in combination, particularly physical signs and symptoms.

  • Standard testing conducted by most general practitioners typically measures fasting glucose and HbA1c, which primarily assess blood sugar levels.

Limitations of Standard Testing 18:46

"What those standard tests don't measure is the pressure itself."

  • These standard tests do not evaluate the actual insulin levels in the blood, thus missing the underlying issue of insulin resistance despite normal blood sugar readings.

  • Although blood sugar can remain normal, insulin levels may be elevated, indicating the body’s effort to maintain that norm, which is indicative of insulin resistance.

The Importance of Fasting Insulin Testing 19:10

"A fasting insulin test measures the actual level of insulin in your blood after an overnight fast."

  • A fasting insulin test is essential for assessing insulin function, as it reveals insulin levels when the body is at rest.

  • High insulin levels, alongside normal blood glucose, are a clear indicator that insulin resistance exists.

Advancing Your Understanding with Homer IR 19:30

"Homer uses both your fasting glucose and your fasting insulin together to calculate a score that determines how insulin resistant you actually are."

  • The Homer IR test combines fasting insulin and glucose readings to provide a more sensitive marker of insulin resistance than glucose or HbA1c alone.

  • This test may not be routinely offered by doctors but can be obtained privately from various laboratories.

Next Steps for Testing 19:50

"This honestly really is one of the most useful things that you can do if you want to understand what's actually happening in your metabolism."

  • Obtaining a fasting insulin test can give vital insights into metabolic health before issues become apparent in standard tests.

  • Searching online can help locate labs that offer fasting insulin testing in your area, enabling proactive health management.