In reproductive centers, such conversations are not uncommon: "Doctor, our examinations are all very good. Why can't we always succeed?" When routine screening fails, an experienced reproductive doctor often asks: "Have you checked insulin and glucose tolerance?" Patients often look confused: "My blood sugar is not high?"
.Insulin resistance, a concept related to blood sugar but by no means equivalent, is like an invisible "metabolic barrier" that quietly reduces the probability of successful test tubes.
1. Re-understanding of "insulin resistance": It's not just a blood sugar problem
Simply understand that insulin is the "key" that opens the cell door and allows blood sugar (energy) to enter.
,,()“”.Insulin resistance means that the lock is rusty and the key (insulin) is inefficient. In order to maintain blood sugar stability, the body has to send a large number of "insulin reinforcements"(hyperinsulinemia).
In women with polycystic ovary syndrome (PCOS), the incidence is as high as 50%-80%.
In women with polycystic ovary syndrome (PCOS), the incidence rate ranges from 50% to 80%.
Many women with normal body weight, or even those who are slightly underweight, may also have “hidden” insulin resistance due to factors such as genetics and chronic stress.
Second, how does it become a stumbling block on the road to test tubes?
Second, how does it become a “stumbling block” on the path to laboratory testing?
Microscopicinterference: Excessive insulin will directly interfere with the function of granulosa cells in the follicle, affect the energy metabolism and ultimate maturity of the egg, resulting in the obtained egg being "strong on the outside but weak on the inside."
Microscopic interference: Excessive insulin can directly disrupt the functions of granulosa cells within the follicles. This disrupts the energy metabolism of eggs and their final maturation process, resulting in eggs that appear “strong on the outside but weak on the inside”.
:,,,.This is like the "innate endowment" of the seed has been weakened.
Vicious Cycle: Hyperinsulinemia stimulates the ovaries to secrete more androgens (such as testosterone), which in turn further aggravates insulin resistance and suppresses normal ovulation.
Vicious cycle: High insulin levels stimulate the ovaries to secrete more androgens (such as testosterone). The increase in androgens, in turn, exacerbates insulin resistance and inhibits normal ovulation.
:,,“”.
Evenif a pregnancy is successful, insulin resistance can significantly increase the risk of early miscarriage, gestational diabetes, preeclampsia, etc., threatening the health of mother and child.
Even if pregnancy is successful, the state of insulin resistance can significantly increase the risk of early miscarriages, gestational diabetes, and preeclampsia, thereby posing a threat to the health of both mother and child.
3. How to identify: These signals appear earlier than blood sugar levels
In the early stages of insulin resistance, fasting blood sugar is often completely normal.
,.The following signs are early warnings for the body:
nCentrally obese:Fat is concentrated in the abdomen (waist circumference ≥80cm), that is, an "apple-shaped" figure.
Skin changes:Skin areas such as the neck, armpits, and groin that develop velvety, pigmented rough patches are known as “acanthosis nigricans.” This is a characteristic symptom of this condition.
Abnormal fatigue and hunger sensations:After meals, one tends to feel sleepy and lack energy. There is also a strong desire for carbohydrates such as rice, noodles, and sweet foods.
Reproductive-related signals:Irregular menstruation, ovulation disorders, or symptoms associated with PCOS.
4. Accurate diagnosis: a test that goes beyond "fasting blood sugar"
It is easy to miss diagnosis by checking fasting blood sugar and insulin alone.
.The "gold standard" assessments recommended by the reproductive department are:
Oral glucose tolerance test (OGTT) combined with insulin release test:After drinking sugar water, blood sugar and insulin levels were measured at 0, 1, and 2 hours. In people with insulin resistance, the peak insulin secretion is too high, delayed or high.
Calculate the Insulin Resistance Index (HOMA-IR):(×)/22.5.A result ≥2.69 usually indicates insulin resistance.
5. System response: full-cycle management strategy
Improving insulin resistance is a process of improving the "soil" of fertility and requires a systematic "combination punch".
Improving insulin resistance is a process that helps improve the “soil” in which fertility operates. It requires a systematic approach involving multiple measures simultaneously.
Diet modification: Adopt a low glycemic index (low GI) diet.
Dietary modifications:(GI).Reduce refined carbohydrates (white rice, white bread, desserts) and replace them with whole grains and mixed beans; ensure sufficient amount of high-quality protein (fish, eggs, beans, lean meat) and dietary fiber (vegetables).
Scientific sports:It is recommended to engage in at least 150 minutes of moderate-intensity aerobic exercise per week (such as brisk walking, swimming, cycling), along with two times per week of resistance training (such as squats, using resistance bands). This approach helps to increase muscle mass and thereby improve insulin sensitivity.
weight managementFor those who are overweight, reducing their initial weight by 5% to 10% can significantly improve metabolic indicators.
Metformin: A classic insulin sensitizer that improves ovulation and improves embryo quality. It is a commonly used drug in patients with PCOS and insulin resistance.
:Classic insulin sensitizers can improve ovulation and enhance embryo quality. They are commonly used in patients with PCOS and insulin resistance.
Inositol:As a dietary supplement, it is particularly suitable for patients with PCOS. It helps to improve egg quality and metabolic indicators.
New types of medications:Medications such as GLP-1 receptor agonists can be particularly beneficial for individuals with severe insulin resistance who also suffer from obesity. These medications may provide significant benefits under the evaluation by a specialist doctor.
Personalization of the excretion promotion plan: Doctors may choose an excretion promotion plan or drug that has less impact on insulin based on metabolic conditions.
Personalization of ovulation induction plans:Doctors will consider the metabolic conditions of the patient and may choose a stimulation plan or medication that has less impact on insulin levels.
Training strategy optimization:Considering the potential impact on embryonic viability, laboratories may recommend culturing until the blastocyst stage for more rigorous screening.
Consideration of the timing of transplantation:Before the metabolic indicators improve significantly, it is sometimes more sensible to delay the transplantation process and focus on physical conditioning first.
6. Patience and persistence: Give the body a 3-6 month improvement period
Metabolic adjustments are not achieved in a day.
.It usually takes at least 3-6 months from initiating lifestyle and medication interventions to the body producing positive feedback. Therefore, for couples planning test tubes, conducting metabolic assessment and intervention in advance is the most valuable "pre-sowing cultivation" for success.
:“,‘,’.Without good soil, no matter how good the seeds are, they will not be able to thrive."
Conclusion
During the test-tube journey full of technical details, don't forget to pay attention to the basic metabolic health of the "ecosystem" of the body.
,“”.Actively screening and managing insulin resistance is by no means an annoyance, but a scientific strategy to fundamentally remove obstacles and improve the efficiency of every attempt. It will help you steadily catch the long-awaited pregnancy with a better physical and mental state.