Last reviewed: June 18, 2026
Last updated: June 18, 2026
Written by:
Jay Hastings,
CEO of PlexusDx
Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance.
Medically reviewed by:
Jayden Lee, PharmD, EMBA
Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.
This article is part of the PlexusDx Education Hub — science-backed guidance on GLP-1 medications, metabolic health, and precision weight management.
Obesity reduces fertility in both women and men, lowering pregnancy rates by up to 50 percent according to fertility specialists. GLP-1 receptor agonists like semaglutide help people lose weight by mimicking a hormone that regulates appetite, but questions remain about their use during pregnancy planning and conception. Understanding the connection between weight loss, GLP-1 medications, and fertility helps people make informed decisions about their reproductive health.
How Weight Loss Improves Fertility and Pregnancy Outcomes
Excess body weight interferes with hormone production and ovulation in women, while reducing sperm quality and testosterone in men. Clinical evidence shows that losing just 5 to 10 percent of body weight can restore regular menstrual cycles and improve egg quality in women with obesity-related infertility. Weight loss also reduces insulin resistance, a major factor in polycystic ovary syndrome (PCOS), the leading cause of infertility in reproductive-age women.
Pregnancy complications increase with maternal weight, including gestational diabetes, preeclampsia, and cesarean delivery rates. Studies demonstrate that women who achieve weight loss before conception experience improved pregnancy outcomes, including lower miscarriage rates and healthier birth weights. For men, weight loss improves sperm motility and morphology, increasing the likelihood of natural conception.
GLP-1 Medications and Pregnancy: What the Current Evidence Shows
Semaglutide and other GLP-1 receptor agonists are not currently recommended for use during pregnancy, as safety data in pregnant women remains limited. Manufacturers advise discontinuing these medications two months before attempting conception, though some fertility specialists suggest stopping earlier depending on individual circumstances. The FDA has not classified semaglutide as safe or unsafe in pregnancy, meaning the decision to use it during fertility treatment requires discussion with both an endocrinologist and reproductive specialist.
Animal studies have not shown birth defects associated with GLP-1 use, but human pregnancy data is minimal because these medications are relatively new and most were initially developed for type 2 diabetes. Real-world pregnancy registries are now collecting data from women who became pregnant while on GLP-1s, which will eventually provide clearer safety profiles. Until more evidence emerges, the standard approach is to achieve weight loss first, then discontinue the medication before conception attempts.
Timing Your Weight Loss: The Optimal Approach for Fertility Planning
The ideal fertility strategy involves using compounded semaglutide or other GLP-1 medications to lose weight, then pausing treatment before attempting conception. Most fertility specialists recommend a two-to-three-month window before trying to conceive, allowing time for the medication to fully clear the body and for your cycle to stabilize. This timeline also lets you establish sustainable eating habits and exercise routines, which support ongoing pregnancy health.
PlexusDx Compounded Semaglutide Injection starts at $149 per month, making rapid weight loss achievable without insurance. If you plan to pursue fertility treatment, discuss your timeline with your prescribing provider so the dose can be managed strategically. Some patients benefit from lower-dose GLP-1 therapy to maintain weight loss without aggressive suppression, then transition off the medication before conception attempts.
Genetic Factors in Weight, Fertility, and Medication Response
Your genes influence how your body responds to weight-loss medications, how quickly you lose weight, and your baseline fertility risk. The PlexusDx Precision Peptide Genetic Test identifies key variants in GLP1R, GIPR, FTO, and MC4R genes that predict medication effectiveness and help optimize your weight-loss strategy. Understanding your genetic profile before starting treatment helps your provider choose the right medication and dose timing to support fertility goals.
Some genetic variants associated with higher BMI also influence reproductive hormone levels and ovulation patterns. By testing these pathways early, you gain insight into whether your weight directly affects your fertility or if other genetic factors are at play. PlexusDx's $99 add-on test maps 14 pathways and 150+ genetic insights, helping personalize your approach to both weight loss and conception planning.
How Your Genetics Influence GLP-1 Response
Not everyone responds to GLP-1 medications the same way. Genetic variants — including GIPR rs1800437, GLP1R rs6923761, FTO rs9939609, and MC4R rs17782313 — influence how your body processes these medications, how much weight you lose, and how you tolerate side effects. PlexusDx maps 14 pathways, 49 peptides, and 150+ genetic insights to match each patient to the right medication, dose, and lifestyle protocol for their biology. The PlexusDx Precision Peptide Genetic Test ($99 add-on after your first month of treatment) gives your provider precise insight into your peptide genetic predispositions before the first prescription is written.
Access Personalized GLP-1 Care Through PlexusDx
PlexusDx offers six prescription GLP-1 protocols to all 50 states — no membership, no insurance required, async intake or live consult. The Semaglutide Injection starts at $149/mo. Medications are dispensed from licensed 503A compounding pharmacies following strict quality and safety standards. Add a Precision Peptide Genetic Test for $99 to personalize your protocol from day one.
Frequently Asked Questions
Can I get pregnant while taking semaglutide or other GLP-1 medications?
GLP-1 medications are not recommended for use during pregnancy, and most fertility specialists advise discontinuing them two months before attempting conception. While animal studies show no birth defects, human pregnancy data remains limited. Work with your doctor to plan a timeline that allows weight loss first, then medication pause before fertility attempts.
How much weight do I need to lose to improve my fertility?
Losing just 5 to 10 percent of body weight can restore ovulation and improve menstrual regularity in women with obesity-related infertility. Research shows this modest weight loss significantly improves pregnancy rates and reduces miscarriage risk. PlexusDx Compounded Semaglutide Injection helps most people achieve this goal within three to six months.
Is compounded semaglutide safe if I'm planning to get pregnant?
Compounded semaglutide from licensed 503A pharmacies is safe for weight loss before conception, but should be discontinued before pregnancy attempts. PlexusDx Semaglutide Injection is available without insurance at $149 per month, making planned weight loss affordable and accessible. Your provider will coordinate the timing to support both your weight-loss goals and fertility plans.
What happens to my weight after I stop GLP-1 medications?
Weight regain varies by individual, but establishing healthy eating and exercise habits during treatment helps sustain results after stopping. The lifestyle changes you build while on medication often stick, supporting stable weight during pregnancy planning and beyond. PlexusDx providers counsel patients on transition strategies to maintain fertility-supporting weight loss.
Can genetic testing help predict how well GLP-1s will work for my weight and fertility?
Yes. PlexusDx Precision Peptide Genetic Test identifies variants in GLP1R, GIPR, FTO, and MC4R genes that predict medication response and weight-loss speed. At $99, this add-on test also reveals genetic factors affecting reproductive hormone balance and ovulation. Personalized results help optimize your medication choice and timeline before conception.
Related Reading
Pricing and availability current as of June 2026. Compounded GLP-1 medications are not FDA-approved drug products; they are prepared by licensed compounding pharmacies under federal compounding regulations. Compounded semaglutide and tirzepatide are not the same as Wegovy, Ozempic, Zepbound, or Mounjaro. This article is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting, stopping, or changing any medication.
Return to the PlexusDx Education Hub for more evidence-based resources on GLP-1 therapy, metabolic health, and personalized weight management.
Medical and Editorial Standards
Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.
Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance.
Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.
Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.
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