The Fertility Notes
Clear, global fertility knowledge in one calm place.
Follow fertility news, compare Korea best IVF doctors, read fertility reports, and explore practical Korea guides in one calm reference library.
Fertility News
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“Does Diabetes Stop the Sperm Production Line?”
Single-Cell Analysis of ~20,000 Testicular Cells from Diabetic Mice Presented at ESHRE 2026 ‘Developmental Stalling’ Observed Between Spermatocytes and Spermatids… Energy Metabolism and DNA Repair Also Disrupted Caution Required Before Applying Directly to Humans… “A Clue Showing Which Stage of Spermatogenesis Diabetes Impairs” It is no secret that diabetes can impair sperm count and motility.…
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“Normal Weight, But Why the Low Sperm Count?”
What BMI Missed: ‘Normal-Weight Obesity’ Unmasked by Body Fat Percentage Analysis of 1,058 Danish Men: Men with 20–24% Body Fat Exhibited Roughly 23% Lower Total Sperm Count Even in Men with Normal BMI, Higher Body Fat Correlated with Distinct Drops in Sperm Count… “Look at Fat Mass, Not Just Body Weight” Imagine two men, both…
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“Immature Eggs Mean It’s Over?”… Cultivating Them One More Day Led to Normal Embryos and Even a Healthy Baby
“Immature Eggs Mean It’s Over?”… Cultivating Them One More Day Led to Normal Embryos and Even a Healthy Baby GV Oocytes Harvested on Retrieval Day Cultivated for an Additional 24 Hours… Roughly Half Revive as Mature Eggs While Blastocyst Progression Power Is Reduced, Chromosomal Normality Rates Among Surviving Blastocysts Remain Competitive Rescue Oocytes Open Transfer…
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“Missed the LH Surge? You Can Still Undergo Embryo Transfer in a Natural-Cycle FET”
“Does Missing the LH Surge Ruin the Transfer?”… Unexpected Research Findings in Natural-Cycle Frozen Embryo Transfers 490-Cycle Prospective Study: Live Birth Rates 56.6% via P4 vs. 52.0% via LH, No Statistically Significant Difference After Adjustment For women preparing for a Natural-Cycle Frozen Embryo Transfer (FET)—where frozen embryos are transferred using their own natural ovulation cycle—one…
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“Reaching Day 7 to Blastocyst? These Embryos Can Still Achieve Pregnancy”
17 Studies and 2,908 Day-7 Blastocyst Transfers Analyzed: Live Birth Probability Lower Than Day-5 and Day-6 Disparity Persists Even When Comparing PGT-A Euploid (Normative Chromosome) Embryos… “Chromosomal Normality Alone Does Not Explain the Difference” Still Not ‘Embryos to Discard’: A Final Opportunity to Elevate Cumulative Childbirth Prospects for Low-Prognosis Patients In In Vitro Fertilization (IVF),…
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“Pregnant After Taking Shots to Lose Weight?”… The Warning Tossed by ‘Mounjaro Babies’
Weight Loss May Restore Irregular Menstrual and Ovulation Cycles… Leading to the Emergence of ‘Mounjaro Babies’ Mounjaro May Reduce the Effectiveness of Oral Contraceptives… Additional Contraception Advised for 4 Weeks After Initiation and Dose Escalation Discontinue Wegovy 2 Months and Mounjaro 1 Month Prior to Pregnancy Planning… “Insufficient Safety Data During Pregnancy” “I took it…
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“IVF Pregnancy: Is Two Lines the Finish Line?”… Women with Adenomyosis and Endometriosis Require Closer Monitoring Through Childbirth
Premature Birth Rate for Women with Endometriosis or Adenomyosis at 18.9%… 1.63 Times Higher Than Women Without Conditions Placenta Previa at 9.0% · Hypertensive Disorders in Pregnancy at 13.2%… “Meticulous Prenatal Care Needed Even After Implantation” For women who have undergone prolonged fertility treatments, seeing “two lines” on a pregnancy test feels almost like crossing…
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“Does Higher Heat Mean Fewer Retrieved Eggs?”
Analysis of 58,468 IVF Women: For Every 1°C Increase in Apparent Temperature, Retrieved Eggs Decrease by 0.20% Mature Eggs and Normally Fertilized Embryos Also Show Minor Declines… “Does Not Mean Heat Waves ‘Destroy’ Eggs” For women preparing for an in vitro fertilization (IVF) cycle in the dead of summer, the weather becomes yet another factor…
Korea Best IVF Doctors
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“Minimum Stimulation, a Method Close to Nature… Focusing on Safety and Quality”
Dr. Lee Kyung-ho’s Principles of Fertility Treatment, Aspiring to Be the ‘Dr. Kato’ of Korea Operating a fertility clinic in Ulsan, Dr. Lee Kyung-ho—director of Mama Papa & Baby Obstetrics and Gynecology—sent an email a decade ago to a Japanese physician revered as a legend in the global reproductive medicine community. The recipient was Dr.…
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Korea’s Top Expert in Finding Sperm: The Last Hope for Male Infertility, Urologist Dr. Seo Joo-tae
Male Infertility Specialist: Dr. Seo Joo-tae, Urologist “Even Azoospermia Patients Can Have Children” Dr. Seo Joo-tae Male factors account for 40% of all infertility cases. Male infertility causes are diverse, ranging from simple sperm disorders like low sperm count or poor motility, to genetic factors like chromosomal abnormalities, and problems with sperm production due to…
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Top IVF Specialists in Korea (Part 2) – Dr. Cho Jung-hyun: A Master of Endometriosis Treatment
Jung-hyun Cho, MD — Sarang I Women’s Clinic. Draft directory profile with public search review notes; pending official verification.
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Top IVF Specialists in Korea (Part 1) – Dr. Lee Sung-goo: Surpassing 90,000 IVF Cases
Public-source profile for Seong-gu Lee of Daegu Maria Clinic.
Fertility Report
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“Will Selecting Better Sperm Also Increase Success Rates?”
“Will Selecting Better Sperm Also Increase Success Rates?” Sperm Selection ‘Add-Ons’ Did Not Work for Everyone PICSI Increases Blastocyst Formation Rate from 31.1% to 44.0% in Patients with Prior ICSI Failure and Low Hyaluronic Acid Binding Microfluidic Sperm Selection Offers No Live Birth Benefit in Normozoospermic Cohorts… “Identifying the Right Patient Comes Before Choosing Advanced…
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“Air Pollution Alters the ‘Gene Switch’ of Sperm DNA”
“Does the Air a Father Breathes Leave a Mark on Sperm?… DNA Switch Alterations in a 2,000-Person Study” Ozone and Nitrogen Dioxide Exposure Linked to Sperm DNA Methylation Changes: Large-Scale Analysis of 2,015 Men Alterations Extend to Genes Involved in Spermatogenesis and Chromosome Segregation… Including Paternally Imprinted Gene GNAS Research has revealed that the air…
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“Should We Build the Endometrium with Medication or Wait for Natural Ovulation?”… Results of a Randomized Trial of 561 Women Undergoing Frozen Embryo Transfer
Women preparing for a Frozen Embryo Transfer (FET) often face a difficult question: “Should I wait until I ovulate naturally before transferring the embryo?” “Or is it better to use estrogen and progesterone to prepare the uterine lining and schedule the transfer date?” A randomized controlled trial conducted across 5 fertility centers in Belgium involving…
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“Inserting a Balloon Into the Uterus?”
Women Who Need to Widen the ‘Narrow Path’ Before IVF “We need to place a balloon inside the uterus to widen the path a bit.” When an infertile patient preparing for In Vitro Fertilization (IVF) hears these words, initial panic is entirely understandable. Does it mean putting a balloon inside the uterus and inflating it?…
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“Are All Humans 99.9% Identical in DNA?”
Is a Donor Sperm Really a “Stranger’s Genes”? Humans Share 99.9% of DNA, Yet the Half Passed Down to a Child Differs Distinctly What Bars the Path to Sperm Donation: Genetic Distance or the Mental Boundary of Bloodline? “Can I truly accept a child born from another man’s sperm as my own?” When the topic…
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“Does a Fisherman’s Wife Conceive More Easily?”
The Secret Was Not the Sea, But the ‘Mediterranean Diet’ “A fisherman’s wife gets pregnant more easily than a mountain dweller’s wife.” Is this old saying actually true? While no formal studies have proven this exact adage, reproductive medicine specialists are paying close attention to the “difference in the dining table” hidden within it. A…
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“At Age 45, One Body Was 60, Another Was 35”
The Real Age That Exercise Changes Though their resident registration cards both read age 45, their bodies were not the same age at all. One person gets short of breath climbing just a few flights of stairs, and their blood pressure and blood sugar slowly begin to rise. The other exercises for over an hour…
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“IVF Pregnancy Success Lies in the Blood Test Numbers”
Pregnancy Hormones Secreted by the Trophoblast After Implantation… Date of Test and Upward Trend Matter More Than the Initial Value The 48-Hour 66% Increase Is Just a Traditional Benchmark; Even Low Starting Numbers Can Lead to Normal Delivery For couples who have completed an In Vitro Fertilization (IVF) cycle, there is one day that brings…
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