The short explanation
For women who are overweight, losing even a small proportion of body weight, around five to ten percent, can help periods and ovulation become more regular and improve the chance of pregnancy. You do not need to reach a 'perfect' weight before trying. Slow, steady weight loss through changes you can keep up, such as smaller portions, fewer fried and sweet foods, more vegetables and daily walking, is usually more helpful than crash diets.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Weight affects fertility partly through hormones and insulin, especially in women with PCOS. Being very underweight can also stop ovulation.
- Your doctor may check thyroid function, blood sugar and other hormones. Waist size, not only weight, can be a useful measure.
- Losing weight while families press for quick results is hard. A dietitian at a government or private hospital can help with a realistic plan based on Indian food.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This answer cannot tell how much weight change would help you, or whether there are other causes. Your doctor can advise based on your tests.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- What weight or waist target is realistic for me?
- Should I be tested for PCOS, thyroid or diabetes?
- Can I see a dietitian here?
- Should we keep trying while I lose weight?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- See a doctor within a few days if you have a positive test with pain or bleeding.
Raise it at a routine appointment
- Book a routine visit to plan weight goals and tests.
Sources
The evidence this explanation is built on.
- Infertility NHS
- Polycystic ovary syndrome (PCOS) NHS
- Polycystic ovary syndrome World Health Organization
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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