Insulin Resistance

What is Insulin Resistance?

Insulin resistance is a reduced response of the body's tissues to insulin, the hormone that moves sugar from the blood into cells. The liver, skeletal muscle and fat tissue are the main tissues involved. The pancreas compensates by making more insulin, and over time it may not keep up, which allows blood sugar to rise.^[1]

Insulin resistance is mainly an acquired condition linked to excess body fat, although genes also play a part.^[1] It is a metabolic state rather than a single disease, and it often sits alongside other problems such as high blood pressure, abnormal blood fats and fatty liver.^{[1, 2]}

Common symptoms

Insulin resistance often causes no symptoms of its own. It is usually recognized through the conditions that travel with it, such as central (waist) obesity, high blood pressure, high triglycerides, low HDL cholesterol and raised fasting glucose.^[2] Dark, velvety skin patches called acanthosis nigricans can also be a sign.

Causes and risk factors

Excess body fat, especially around the abdomen, is the main driver, and a high calorie intake adds to the demand on the pancreas.^[1] Researchers describe fat build-up in the liver and muscle, stress inside cells and low-grade inflammation as proposed mechanisms.^[3] Genetic causes have also been identified.^[1]

Insulin resistance is closely tied to type 2 diabetes, fatty liver disease, cardiovascular disease and polycystic ovary syndrome (PCOS).^[1]

How it is diagnosed and treated conventionally

No single test is generally accepted for diagnosing insulin resistance in clinical practice. The research standard, the glucose clamp, is rarely used outside studies. Doctors usually rely on the related findings and on estimates such as HOMA-IR, which is calculated from fasting glucose and insulin, or the triglyceride-to-HDL ratio.^[1]

Lifestyle change is the first focus: a calorie-aware way of eating, regular physical activity and weight management. Medicines can also improve insulin response.^[1] In people with prediabetes, a review of 44 trials found that lifestyle weight-loss programs increased the return to normal blood sugar and lowered progression to type 2 diabetes, with the benefit rising across weight losses of 1 to 9 percent.^[4]

Why Insulin Resistance calls for a whole-person approach

Insulin resistance rarely has a single cause. Body fat, inflammation, sleep, daily rhythms and activity all influence how well tissues respond to insulin, and they affect one another.^{[1, 5]}

Care that looks at the whole pattern of daily life, in addition to blood test results, is therefore a reasonable complement to medical treatment.

Body fat and inflammation

Obesity-related low-grade inflammation is considered responsible for a drop in insulin sensitivity. Excess fat stored in fat cells appears to increase inflammatory signaling that interferes with how insulin works.^[5]

The vicious cycle of high insulin

When tissues resist insulin, the pancreas releases more, and the resulting high insulin level may itself worsen resistance. This cycle continues until the pancreas can no longer keep up.^[1]

Sleep and daily rhythm

Poor sleep is linked to type 2 diabetes risk. A meta-analysis of randomized trials found that restricting sleep reduced insulin sensitivity, and that disrupted body-clock timing also had a negative effect.^[6]

Physical activity and movement

Physical activity increases energy use and improves how muscle responds to insulin.^[1] Exercise and diet are the main lifestyle tools, and this care is meant to support them, not replace them.

Acupuncture for Insulin Resistance

What the research shows

Acupuncture may modestly improve markers of insulin resistance, but the evidence is limited and mixed. The strongest direct test is a three-arm trial of 342 women with PCOS and insulin resistance. After 4 months of treatment three times a week, true acupuncture did not improve insulin sensitivity more than sham acupuncture, and it was less effective than metformin at lowering HOMA-IR. Bruising was more common with acupuncture, while stomach upset was more common with metformin.^[7]

Pooled analyses are more positive but rest on weaker studies. A meta-analysis of 9 trials with 562 patients found better HOMA-IR and fasting insulin with acupuncture, and called for higher-quality trials to confirm the result.^[8] A second meta-analysis reported larger improvements in HOMA-IR and insulin sensitivity and fewer adverse events than other treatments.^[9] A review of 13 trials in metabolic syndrome found acupuncture beat sham acupuncture on several measures, and that adding it to usual care was associated with a smaller waist circumference and lower body mass index. The authors asked for larger trials.^[10]

The reviews pooled small trials with varied designs and different patient groups, and the authors asked for higher-quality trials, so they cannot show how well acupuncture works for an individual with insulin resistance.

How acupuncture may work

Researchers have proposed that acupuncture may influence insulin signaling, inflammation and fat metabolism. A 2024 review of 18 clinical trials and 25 animal studies summarized these possible mechanisms and noted small samples and inconsistent techniques as limits.^[11] These are proposed explanations, not settled facts.

What treatment involves

Treatment uses fine, sterile, single-use needles placed at points chosen for the individual, usually left in place for about 20 to 40 minutes. We reassess after a short course of visits. The PCOS trial gave sessions three times per week for 4 months.^[7]

Serious problems from acupuncture are rare. In prospective studies, about 9 in 100 patients had a minor reaction such as bleeding, soreness or redness at a needle site, and serious events occurred in about 1 in 10,000 patients.^[12] Tell the practitioner first if you have a bleeding disorder, take blood thinners, are pregnant, or have a pacemaker (relevant to electroacupuncture).

Ayurvedic medicine for Insulin Resistance

The Ayurvedic view

Ayurveda does not use the term insulin resistance. Metabolic conditions of this kind are traditionally discussed in terms of excess Kapha, weak digestive fire (agni) and the build-up of undigested material (ama), often linked to heavy foods, little movement and daytime sleep. These are traditional categories for choosing care, not biomedical diagnoses.

Therapies that may be used

Care is chosen for the individual and traditionally combines:

• Diet and daily routine intended to reduce heaviness, such as regular meal times, lighter meals and a steady sleep schedule
• Movement and daily physical activity
• Herbs, including turmeric (Curcuma longa), which has been studied in trials of people with impaired glucose tolerance and is discussed below, prescribed individually by a qualified practitioner^[13]

Panchakarma is generally not appropriate during pregnancy, acute illness, frailty or unstable medical conditions.

What the research shows

We found no clinical trials of an Ayurvedic treatment program for insulin resistance itself. Research on Ayurvedic herbs mostly concerns single ingredients, covered under herbal medicine below.

Yoga, which is related to Ayurveda but not a clinic service, has been studied in metabolic syndrome. A meta-analysis of 7 trials found no effect on fasting glucose or on resolution of metabolic syndrome, but some benefit for waist circumference and systolic blood pressure, results the authors described as not robust.^[14]

Herbal medicine for Insulin Resistance

Herbs and formulas that have been studied

The best-studied herbal products for blood sugar and insulin resistance include curcumin, the main active compound of turmeric, and berberine, a compound from Chinese herbs such as Coptis (Rhizoma Coptidis).^{[15, 16]} Fenugreek and flaxseed have also been tested in people with impaired glucose tolerance.^[13] The Chinese patent formula Jinlida has been tested in a large placebo-controlled trial.^[17]

What the research shows

The evidence is moderate for some products and weaker for others. A review of 103 trials found that curcumin lowered fasting blood sugar, with evidence rated high certainty, and may improve HOMA-IR and other insulin measures, with moderate-certainty evidence. The authors noted limits in the quality of the included studies.^[15] A review of trials in impaired glucose tolerance found curcumin results encouraging, but most trials in the review were highly biased, and results for fenugreek and flaxseed were low quality.^[13]

In the FOCUS trial, 885 adults with impaired glucose tolerance in China took Jinlida or placebo for a median of about 2 years. The Jinlida group had a lower risk of developing diabetes and a lower HOMA-IR. The trial was done in China, and the formula is an approved treatment for type 2 diabetes there; the results may not apply to other populations or products.^[17]

A meta-analysis of 46 trials of berberine in type 2 diabetes found lower HbA1c, fasting insulin and HOMA-IR, although the people studied already had diabetes.^[16] Many of the other plants reported to improve insulin sensitivity have been tested only in laboratory or animal models.^[18]

Safety and herb-drug interactions

Herbs are active substances and can interact with medicines. Reported interactions include enhanced bleeding with warfarin and low blood sugar when garlic was combined with an oral antidiabetic drug.^[19] Anyone taking diabetes medicines or insulin should have a practitioner review any herb first, because glucose-lowering herbs may add to the effect of the medicine. In one study, about one fifth of Ayurvedic products bought online contained detectable lead, mercury or arsenic.^[20] Herbs should come from tested sources and be prescribed individually. Tell us if you are pregnant or breastfeeding, have liver or kidney disease, or have surgery planned.

Translating traditional medicine into modern biological language

The links drawn here are interpretation, not equivalence. Chinese medicine often describes this picture as dampness and phlegm with weakness of the spleen, which loosely parallels excess body fat, impaired handling of sugar and fats, and low-grade inflammation. Researchers studying plant-based and acupuncture treatments look at insulin signaling, inflammation and fat metabolism.^{[11, 18]}

Ayurveda's excess Kapha and weak agni describe heaviness, sluggish metabolism and poor digestion. No study has shown that a dosha or pattern corresponds to a specific biological process.

How this care fits with your medical care

Integrative care for insulin resistance is complementary. Keep your physician and prescribed treatment, and do not stop or change medicines such as metformin without your prescriber. We do not diagnose insulin resistance, prediabetes or diabetes, so abnormal blood sugar should be evaluated by your doctor.

Please bring your diagnosis, recent blood test results such as fasting glucose, HbA1c and cholesterol, and a full list of medicines and supplements.

When to seek urgent medical care

Very high blood sugar can become an emergency.

• Extreme thirst, frequent urination and blurred vision with very high home glucose readings
• Nausea, vomiting, belly pain or fruity-smelling breath
• Confusion, unusual drowsiness or fainting
• Shaking, sweating and confusion from low blood sugar in people taking diabetes medicines
• Chest pain, shortness of breath or sudden weakness on one side of the body

If any of these occur, call 911 or go to the nearest emergency department.