Can weight loss improve metabolic outcomes in PCOS?

In brief

For people with PCOS who have excess weight, the international guideline notes that modest weight loss can bring clinical improvements, and that healthy lifestyle has benefits even without weight change. Weight loss is not a goal for everyone with PCOS. The guideline also asks clinicians to avoid weight stigma and to focus on health behaviours, not only on the scale.

What the evidence suggests

  • The 2023 international guideline says lifestyle management can improve health in people with PCOS and that healthy lifestyle has benefits even without weight loss.
  • The guideline recommends healthy lifestyle behaviours for all people with PCOS regardless of weight, to support health and prevent excess weight gain.
  • A Cochrane review found lifestyle programmes reduced weight and improved some metabolic markers compared with minimal intervention, based on low-certainty evidence.

What varies between people

  • Some people with PCOS are at a healthy weight and the advice for them focuses on eating well and activity rather than weight loss.
  • Response to the same changes differs between individuals, and weight change can be slower for some people.
  • Pregnancy, breastfeeding, a history of disordered eating and some medicines all change whether and how weight loss should be approached.

What the evidence does not say

  • The evidence does not establish that weight loss resolves PCOS. It remains a long-term condition.
  • It does not show that any particular diet produces better long-term weight outcomes in PCOS than another balanced diet.
  • It does not support rapid or very low calorie approaches as routine care, and long-term weight maintenance data in PCOS are limited.

What this looks like in real food

Examples of everyday staples across cuisines. None of these foods treats PCOS. They show how a balanced plate can look in the food you already eat.

South Asian

Staple carbs:
Whole wheat roti, Brown or parboiled rice, Millets such as jowar, bajra and ragi, Poha and upma with vegetables
Proteins:
Dal and other pulses, Paneer, curd and milk, Eggs, Chicken and fish
Fats:
Mustard, groundnut or sesame oil in measured amounts, Nuts and seeds, Small amounts of ghee

Mediterranean

Staple carbs:
Wholegrain bread, Bulgur and farro, Wholewheat pasta, Potatoes with skin
Proteins:
Chickpeas, lentils and beans, Fish, Greek yoghurt, Eggs
Fats:
Olive oil, Olives, Nuts

East Asian

Staple carbs:
Brown or mixed-grain rice, Soba noodles, Congee with added vegetables
Proteins:
Tofu, tempeh and edamame, Fish, Eggs, Lean pork or chicken
Fats:
Sesame oil in small amounts, Peanuts, Oily fish

Middle Eastern

Staple carbs:
Wholemeal pita, Freekeh and bulgur, Brown rice
Proteins:
Hummus and ful medames, Lentil soup, Labneh and yoghurt, Grilled chicken or fish
Fats:
Olive oil, Tahini, Pistachios and almonds

Western

Staple carbs:
Oats, Wholegrain bread, Potatoes with skin, Wholewheat pasta
Proteins:
Beans and lentils, Eggs, Chicken and fish, Yoghurt and cheese
Fats:
Olive or rapeseed oil, Nuts and seeds, Avocado

Related questions

Next questionWhat role does nutrition play in managing PCOS?

References

  1. Teede HJ, Tay CT, Laven JSE, et al. Recommendations from the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome. J Clin Endocrinol Metab. 2023;108(10):2447-2469. Source
  2. Lim SS, Hutchison SK, Van Ryswyk E, Norman RJ, Teede HJ, Moran LJ. Lifestyle changes in women with polycystic ovary syndrome. Cochrane Database Syst Rev. 2019;3:CD007506. Source