Fish oil in Pregnancy Study

Could taking fish oil in pregnancy improve your baby's health? If you are less than 20 weeks pregnant then you could take part.

What is the Fish Oil in Pregnancy Study?

Babies born to women who are carrying extra weight during pregnancy are more likely to develop health and weight problems as they grow up. We want to find a way to improve your health to give your baby the best start to life.

This study is to find out whether taking fish oil during pregnancy can help to prevent your baby from becoming overweight and developing problems like diabetes as they grow up.

Please note, recruitment for this study has finished.

What does the study involve?

To find out if this treatment works, we'll give you either fresh fish oil capsules or olive oil capsules to take throughout your pregnancy and until your baby is three months old.

We will assess you twice during your pregnancy at our clinics around Auckland. We will also assess you and your baby for the first 12 months after they are born.

Who can take part?

We would like you to be part of the study if you:

  • Are less than 20 weeks pregnant
  • Are aged 18-40
  • Have a BMI of more than 25 (we can help you work this out if you're not sure)
  • Are a non-smoker who has not had diabetes

What does it cost?

It doesn't cost you anything to participate. In fact, we will reimburse you for your costs to come to our clinics across Auckland.

How can I find out more about the study?

To find out more about the study, text "Fish Oil Trial" and your name to 027 604 5240, or email your name and phone number to

This study was approved by the Health & Disabilities Ethics Committees (16/NTA/154)