Reduce the Risk of Miscarriage

Last week we discussed 13 Possible Causes of Miscarriage, which you can read about here. This week is all about ways you can prevent miscarriage and reduce the risk of miscarriage. It can be difficult to determine what’s causing miscarriage, but if you apply the following advice, it will reduce some risk factors and give you a better shot at reaching full term and delivering a healthy baby.

1. Chromosomal abnormalities

Most miscarriages are caused by chromosomal abnormalities in the embryo. While you can’t change your age, supporting egg health in the three-month maturation phase is critical. Antioxidants and toxin avoidance during this time can reduce chromosomal damage. Always consult a healthcare professional before supplementing.

2. Cigarette smoking

Both maternal and paternal smoking—even second- and third-hand smoke—can increase miscarriage risk and later complications like SIDS. Quitting smoking before, during, and after pregnancy is essential. Quit.org.au offers free support.

3. Alcohol consumption

Alcohol can negatively impact fertility and increase miscarriage risk. Research shows alcohol consumption before conception may affect foetal heart development. Switching to alcohol-free alternatives can make social situations easier to navigate.

4. Caffeine consumption

Although guidelines vary, we recommend limiting to under 200mg/day or avoiding caffeine altogether, especially if you’ve had previous losses. More on ACOG's position.

5. Obesity

Obesity increases miscarriage risk. Individualised nutrition advice from a dietitian or fertility specialist is recommended. Even small lifestyle changes like walking 3x/week can help.

6. Diabetes or insulin resistance

Insulin resistance is a miscarriage risk factor, particularly in PCOS. Natural therapies can support insulin balance—ask your practitioner about this.

7. Thyroid dysfunction

Get your TSH tested pre-conception. Aim for levels under 2.5 mU/L. Subclinical hypothyroidism can be supported with iodine and nutritional therapies, but only under professional guidance.

8. Anatomical or cervical incompetence

A history of cervical incompetence may require a cervical stitch (cerclage). Success rates are high (83–97%). Work with your obstetrician.

9. Anti-phospholipid syndrome

If diagnosed, your doctor may prescribe anticoagulants. Avoid self-medicating. Staying hydrated may help support blood flow.

10. Partner chromosomal abnormalities

Balanced translocations can only be diagnosed through genetic testing. Learn more about carrier screening here.

11. Bacterial vaginosis

BV increases miscarriage risk. Vaginal probiotics, not gut-specific ones, are required. We offer targeted probiotics and vaginal microbiome testing in-clinic.

12. Thrombophilias (e.g. Factor V Leiden)

Blood clotting disorders may be managed with vitamin E or herbs like ginger/cinnamon, depending on your constitution. Work with a qualified naturopath or Chinese medicine practitioner.

13. Natural killer cells and autoimmune dysfunction

Recurrent miscarriages may be linked to immune dysregulation. Ask your doctor about testing—or seek a second opinion. Read more on The Bondi Protocol.

Final Thoughts

Lifestyle changes—like quitting smoking and alcohol, reducing caffeine, maintaining a healthy weight, and seeking proper medical care—can significantly improve pregnancy outcomes. If you’d like personalised support, book an appointment here or get in touch with our team.

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Probiotics and Pre-eclampsia in Pregnancy

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13 Possible Miscarriage Causes