Patient Education · Balaji Horizon

Link Between Obesity and Infertility

Dr. Priyadatt Patel
Reviewed by Dr. Priyadatt PatelSenior Gynecologist · Advanced Laparoscopic Surgeon · IVF & Endometriosis Programme Lead
DPP
Reviewed by Dr. Priyadatt PatelSenior Gynecologist · Advanced Laparoscopic Surgeon · Last reviewed 25 May 2026

The Link Between Obesity and Infertility: A Detailed Assessment

By Dr Shreya Iyengar Patel, an Infertility Specialist at Balaji Horizon Women’s Hospital

Couples grappling with infertility issues face a weightier problem, pun intended. Obesity is a significant obstacle when it comes to a couple’s chances of conceiving a child, which is why it is necessary to understand it deeply.

The American Society for Reproductive Medicine (ASRM) reports that obesity is a contributing factor to infertility among about 6% of women who have not been able to conceive. This relationship between obesity and infertility is complex because it involves hormonal disorders in males and females.

Effects of Obesity on Women's Sexual Health

Women who are obese tend to exhibit hormonal changes that affect how their body manages and stores sex hormones. Fat cells can convert the male hormone known as androstenedione into a female hormone called estrone. Once the levels of estrone increase, the brain stops menopause, deregulating the ovarian functions and resulting in irregular menstruation and lowered chances of conception.

Effects on Men's Fertility

Obesity inflicts negative impacts on male fertility, too. Several factors lead to overweight men’s insubstantial sperm levels or scarceness of them altogether.

 

  • Sustained high temperatures on the body, more so near the scrotum, are not suitable for sperm generation.
  • Hormonal changes within obese males can lead to high estrogen levels while inhibin B and androgen, two sperm-producing hormones, are reduced. These biological factors result in poor sperm count, lower concentration, and motility, making fertilization more challenging.

The Interconnected Cycle of Obesity and Infertility

Infertility and obesity tend to form a self–perpetuating cycle. Stress, particularly associated with chronic attempts to conceive, can result in increased irregularity of menstrual cycles, weight gain, and overeating. Resorting to emotional eating, especially the consumption of fast food, can exacerbate obesity and reduce fertility further.

In addition to this, obesity and infertility are often worsened by high rates of polycystic ovarian syndrome (PCOS). Cystic ovarian syndrome is a hormonal disturbance that leads to the formation of cysts in the ovaries and is common in obese women. Research shows that 50-60% of women suffering from PCOS are also obese, which only worsens the symptoms and adds more barriers to motherhood.

Looking Ahead: Finding Assistance

It is also beneficial to contact a fertility specialist if you are having difficulty getting pregnant and think that obesity is part of the problem. Engaging in controlled caloric intake accompanied by physical activity can help restore the hormonal balance, consequently increasing the chances of conceiving. At Balaji Horizon Women’s Hospital, we let you design personalized treatment plans because we understand that everyone is different.

For patients from Rajkot, the city of Ahmedabad is well-equipped with specialist doctors and fertility clinics. If you are situated in Rajkot and require advanced management of infertility, you may consult with Balaji Horizon Woman’s Hospital in Ahmedabad. They will expertly guide you throughout your fertility journey.

Final Statement

Chances of conception increase with the treatment of obesity, which has proven to be a major contributor to infertility for both sexes. Most people with idiopathic infertility and associated conditions such as PCOS know they have to lose weight and control their hormones to become parents, but it is not that simple.

If you require additional assistance or want to book an appointment, contact us at Balaji Horizon Women’s Hospital. Whether you are in Ahmedabad or from Rajkot, we promise to assist you as best as possible in experiencing parenthood.

Dr. Priyadatt Patel
About the Author
Dr. Priyadatt Patel
Senior Gynecologist · Advanced Laparoscopic Surgeon · IVF & Endometriosis Programme Lead
Founder of Balaji Horizon Women’s Hospital. ESHRE / ASRM / FIGO-aligned practice. ★ 5.0 on Google · 287 reviews.
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Frequently Asked Questions

Will I have trouble getting pregnant if I am overweight?
BMI above 30 substantially reduces fertility through hormonal, metabolic, inflammatory and ovulatory mechanisms. BMI 25–30 produces smaller effects. Each unit above the healthy range reduces fertility modestly.
How much weight do I need to lose to improve fertility?
5–10% weight reduction is sufficient to substantially improve ovulation, IVF outcomes and obstetric results. More weight loss helps further but is not strictly necessary to see meaningful improvement.
Does obesity affect male fertility?
Yes. Lower testosterone, lower sperm count and motility, higher DNA fragmentation, scrotal heat, and erectile dysfunction all contribute. Sperm quality often improves substantially with weight loss over 3–6 months.
Should I delay IVF until I lose weight?
Modest delay (3–6 months) for meaningful weight loss often produces better cumulative outcomes than rushing into IVF at high BMI. Discuss timing with your specialist; age is a competing factor.
Are GLP-1 agonists safe for fertility?
GLP-1 agonists are not used during conception attempts and must be stopped 1–2 months before fertility treatment. They are valuable in the preparation phase before treatment.
Will bariatric surgery help my fertility?
Bariatric surgery dramatically improves fertility outcomes in women with severe obesity. Conception should be delayed for 12–18 months post-surgery, with nutritional optimisation.
Can being too thin also affect fertility?
Yes. BMI under 19 causes hypothalamic suppression and anovulation. Restoring BMI to 20–25 restores ovulation in most cases.
What is the healthiest BMI range for fertility?
Approximately 20–28. Both extremes (under 19, over 30) impair fertility. The middle range supports normal ovulation, IVF response and pregnancy outcomes.
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