Does PCOS mean I will gain weight?

Not necessarily. PCOS affects people across the weight spectrum. It's linked with insulin resistance, but experiences vary, and care focuses on health rather than appearance.

No. PCOS is a hormonal condition, not a result of anything you did. Support should be practical and free of blame.

PCOS (PMOS), Weight & Metabolic Health

PCOS (PMOS), weight and metabolic health

Polycystic ovary syndrome (PCOS), now also officially known as polyendocrine metabolic ovarian syndrome (PMOS), is described here using the familiar term PCOS.

PCOS is often associated with insulin resistance, which can influence metabolic health over time. This affects people across the weight spectrum.

This page explains the connection in a supportive, non-judgemental way. It focuses on health, not appearance, and there are no weight-loss promises here.

Key points

PCOS is often linked with insulin resistance.
Metabolic health matters for everyone with PCOS, at any weight.
This is about health, not appearance, and not about blame.
Support is individual and best discussed with a clinician.

Last reviewed 5 July 2026

Insulin resistance and PCOS

Many people with PCOS have some degree of insulin resistance, where the body responds less efficiently to insulin. This can play a role in symptoms and longer-term metabolic health.

Why metabolic health matters

Looking after metabolic health is worthwhile for everyone with PCOS, regardless of body size. It's about supporting overall wellbeing, not achieving a particular number on the scales.

A supportive approach

Care is individual and best guided by a clinician. Weight is only one part of a much bigger picture, and support should be free of stigma.

When to see a specialist

If you'd like to understand how PCOS may affect your metabolic health, a specialist can talk it through and suggest sensible, individual steps.

Frequently asked questions

Sources & further reading

This page is structured around information from reputable Australian health bodies:

More plain-language reading from Dr Sivadas.

PCOSSymptoms & management PCOSPCOS diagnosis FertilityFertility assessment PCOSPCOS & fertility

Written & medically reviewed by

Dr Priya Sivadas

FRANZCOG, CREI, MMed · Fertility and Gynaecology Specialist

Last reviewed: 5 July 2026

Read Dr Sivadas's profile

drpriyasivadas.com.au

Questions about PCOS and your health?

Appointments are managed on the practice site.

Request an appointment

Consulting locations

Parramatta

Monash IVF

Level 2, 1 Fennell Street
Parramatta NSW 2151

Bella Vista

Norwest Private Hospital

Suite 106, 11 Norbrik Drive
Bella Vista NSW 2153

Penrith

Somerset Specialist Centre

Level 3/38 Somerset St
Penrith NSW 2747