What is Insulin?
Insulin is a vital hormone in the body that helps regulate
blood sugar levels. When you eat food, your body converts carbs into glucose
(sugar) that goes into the bloodstream. The pancreas responds by secreting
insulin, which assists with bringing this glucose into your cells, especially
into muscles, fat, and the liver to utilize as energy or store for future use.
It helps in maintaining normal blood sugar levels and keeps them from
experiencing hazardous spikes or drops.
What Is Insulin Resistance?
Insulin resistance is when the cells of the body are no
longer responding to insulin. This results in glucose not being able to enter
the cells, so the pancreas secretes more insulin to make up for this. Although
this can maintain normal blood sugar levels for a while, overproduction of
insulin will ultimately cause high blood sugar levels, which can then advance
to prediabetes and type 2 diabetes if not treated.
What leads to Insulin Resistance?

While scientists continue to discover the specific causes of
insulin resistance, they have determined that there are several factors that contribute
to it:
- Overweight
and Obesity: The greatest risk factor for insulin resistance is having
too much body fat, especially around the waist. Visceral fat creates
hormones and inflammatory chemicals that will disrupt insulin from
functioning. A waistline size of 40 inches or wider in men and 35 inches
or wider in women is associated with increased insulin resistance,
regardless of the BMI considered to be normal.
- Physical
Inactivity: A sedentary lifestyle leads to insulin resistance.
Exercise regularly enhances insulin sensitivity through the ability of
muscles to utilize glucose better. When the body is not active, glucose
builds up in the blood, and the pancreas has to secrete more insulin to
match the demand.
- Poor
Diet Choices: Diets rich in processed foods, refined carbs, and added
sugar can overwhelm the body's systems to control blood sugar, developing
insulin resistance. Some of these foods include:
- Sugary
drinks and carbonated beverages
- Processed
baked treats and snacks
- High-fructose
corn syrup
- Fast
food and fried foods
- Overindulgence
in white bread and pasta
- Stress
and Sleep Disturbances: Chronic stress and irregular sleep patterns
may raise cortisol levels, which disrupts insulin function. Sleep
deprivation also decreases insulin sensitivity, that is why it becomes
difficult for the body to regulate glucose. A regular sleep schedule
and stress management methods such as meditation, exercise, and relaxation
activities can help counteract this effect.
- Smoking
and Alcohol Consumption: Smoking and heavy alcohol consumption have
been associated with insulin resistance. Nicotine and alcohol increase
inflammation and alter metabolic function, making it more difficult for
insulin to function optimally. Check out this blog on How
does Alcohol Interact with Liver Health, to understand this point
better.
Symptoms of Insulin Resistance

In most cases, individuals with insulin resistance or
prediabetes will not feel symptoms. Some warning signs might signal a
problem:
- Thirst
and More Urination: When the blood sugar is high, the kidneys have to
work harder to filter and get rid of the excess glucose, resulting in
frequent urination. This also causes dehydration, which makes you always
thirsty.
- Excessive
Hunger: Even after regular meals, individuals with insulin resistance
constantly feel hungry. This is due to cells failing to take in glucose
properly, resulting in a lack of energy and enhanced hunger, particularly
for carbohydrates and sweets.
- Fatigue
and Lethargy After Eating: Being extremely fatigued or lethargic after
a meal, particularly after carbohydrate consumption, could be an
indication that your body is not able to control blood sugar levels
properly.
- Sweet
Cravings After Lunch or Dinner: Having a sudden craving for something
sweet directly after a meal could be a sign of blood sugar swings due to
insulin resistance. The body needs sugar to quickly stabilize energy
levels.
- Acanthosis
Nigricans (Darkened Patches of Skin): Some people get dark, velvety
skin patches, typically on the neck, armpits, and groin. This is called
acanthosis nigricans, an early sign of insulin resistance.
- Skin
Tags: Most people with insulin resistance get small, harmless skin
growths called skin tags, especially in skin folds.
- Unexplained
Weight Gain: Even when placed on a restricted diet, weight loss
becomes more difficult because of insulin resistance. This is a result of
the inability of the body to properly utilize glucose, thus accumulating
too much fat.
Long-Term Consequences of Insulin Resistance
Unattended insulin resistance has more severe long-term
effects that include:
- Type
2 Diabetes – Continuous insulin resistance has a direct consequence on
increasing blood sugar levels to perilous points, which ultimately leads
to diabetes. Click here to check the best
diet for diabetics.
- Heart
Diseases – Insulin resistance is linked with high blood pressure, high
cholesterol, and cardiovascular disease risk.
- Fatty
Liver Disease – Too much fat in the liver can cause inflammation and
liver damage.
- Metabolic
Syndrome – A group of conditions, such as obesity, high blood
pressure, and high cholesterol, that raise the risk of diabetes and heart
disease.
How to Prevent and Manage Insulin Resistance

Insulin resistance is treatable, and in most instances,
reversible with lifestyle modification. Here's what you can do:-
Eat a Healthy Diet: A diet composed of whole,
unprocessed foods can greatly enhance insulin sensitivity. Consider adding:
- Lean
proteins (chicken & fish)
- High-fiber
foods (vegetables, legumes, whole grains)
- Healthy
fats (ghee & butter)
- Low-glycemic
index foods (berries & quinoa)
Stay away from refined carbohydrates, processed foods, and
trans fats, which aggravate insulin resistance.
Exercise daily: Exercise helps maintain insulin
sensitivity. Aerobic exercise (brisk walking, jogging and cycling) and
resistance exercise (weightlifting, bodybuilding) help muscle cells uptake
glucose better.
Control Stress and Sleep Quality: Practicing
stress-reducing activities like yoga, meditation, and deep breathing can
improve insulin function. Additionally, aim for 7-9 hours of quality sleep each
night to support metabolic health.
Quit Alcohol and Smoking: Quitting alcohol and
smoking can reduce inflammation and improve insulin sensitivity over time.
Regular Health Checkups: Monitoring your blood sugar
levels through routine checkups can help detect insulin resistance early,
allowing for proactive intervention.
Conclusion
Insulin resistance is a quiet disease that has serious
long-term health effects if it's not treated. But by taking a healthier
lifestyle, being active, and eating diligently, you can take away most of your
risk and feel better overall. If you're wondering if you have insulin
resistance or have already been detected with insulin resistance and want the
right support, Book a free
consultation with iThrive. At iThrive, we aim to reverse
chronic diseases by treating the root causes of health issues and suggesting
personalised and long-lasting solutions.
