Low iodine levels and delayed conception

Low iodine levels and delayed conception

Iodine deficiency during pregnancy is the most prominent, preventable cause of intellectual impairment in children around the world and is a key component of thyroid hormones that are crucial for brain development during early pregnancy.

So, can low iodine levels delay conception?

salmon dish. Suggested to help female fertility

A recent study published in the Human Reproduction Journal has also revealed the effect iodine deficiency has on conception in women of childbearing age. Research has shown that there is a significant correlation between a delay in becoming pregnant and lowered iodine levels in women of childbearing age. Women who suffered from severe iodine deficiency experienced almost a 50% decreased probability of becoming pregnant compared to the women with normal iodine levels.

Surprisingly, the women suffering from iodine deficiency had a diet that was high in sodium, the likely explanation being that the large amount of salt in the processed foods that the participants were consuming was not iodised. Food manufacturers in Australia are not required to use iodised salt.

The study provided strong evidence to suggest that significantly diminished fecundity was related to reduced iodine levels in women trying to fall pregnant.

Fertility First tests all patients as part of their initial assessment and treats those with abnormal iodine levels, as we recognise the importance of healthy thyroid levels when it comes to fertility, fecundity and early pregnancy health. If a woman returns for another pregnancy she will be retested as levels can change over time.

The WHO recommends a woman has an iodine level of 150ug/l to maximise fertility and the health of her baby’s growing brain.

Sea salt, unless iodised, and kelp are not good sources of iodine. Iodised salt, dairy products, seafood, eggs and some breads are good dietary sources of iodine.

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FAQs about improving natural fertility

Will stress affect my ability to get pregnant?

Yes, chronic stress can impact fertility by disrupting hormonal balance and ovulation patterns. Managing stress through relaxation techniques, regular exercise, adequate sleep, and mindfulness practices may help optimise your chances of conception. Consider speaking with a counsellor if stress feels overwhelming.

How does my partner's health affect our fertility?

Sperm health accounts for about 40% of conception challenges. Your partner can improve sperm health by maintaining a healthy weight, avoiding excessive heat exposure (hot tubs, saunas, tight clothing), limiting alcohol, quitting smoking, managing stress, and taking a multivitamin with antioxidants. Sperm takes about 3 months to develop, so lifestyle changes need time to show results.

When during my cycle am I most fertile?

Your fertile window typically spans 5-6 days, ending on ovulation day. For a regular 28-day cycle, this usually falls between days 10-15, with peak fertility 1-2 days before ovulation. Track your cycle using ovulation predictor kits, basal body temperature, or cervical mucus changes to identify your unique pattern. Having intercourse every 1-2 days during this window optimises your chances.