For concerns, please email us at enquiries@vitaminsonly.com.au

Shipping Fee and Returns:

Standard Shipping
$5.95 via Australia Post

Free Shipping

Orders $75 and over are eligible, this option will be available in checkout if your order meets the minimum amount.

Express Shipping

Rates are calculated upon checkout. You can preview it there. During these times, Express Guarantee is not implemented, but it is still prioritized for the quickest delivery possible.


For returns, kindly contact us HERE.

Our policy lasts 90 days. If 90 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

If the product has no issues when returning, the shipping fee/s are non-refundable. Read more HERE.

If you wish to cancel or change your order, we can do it if we have not shipped yet. Please be advised that normally, our shipping times range from within
minutes after the order is placed, up to 48 hours, so we advise to give us a notice as soon as possible. Read more HERE.

Notice: Australia Post Delays >

September 19, 2017

The Generation R study conducted in Rotterdam, the Netherlands, is a study of fetal development. 9778 mothers were invited to be a part of this study. The objective of the study was to understand what environmental and genetic factors lead to normal and abnormal growth in a fetus.

One of the major findings of this study was how the deficiency of vitamin D in the mother led to the development of autistic traits in the child, post-birth.

Role of vitamin D in fetal development

During gestational period, vitamin D helps in fetal organ development, bone growth and ossification. Based on the Generation R study, it is now evident that a deficiency of the vitamin in the expectant mother has implications for the fetus.

Vitamin D and Autism

Vitamin D is a steroid hormone that regulates over a thousand different physiological processes. When there is enough of it in the body, the vitamin D receptors which are located in the brain, breast, bones, colon and pancreas start functioning at optimum capacity. The receptors are also present in the placenta, through which the fetus gets access to the vitamin.

Vitamin D regulates a gene that converts tryptophan to serotonin, a hormone that contributes to fetal brain development. When the mother’s vitamin D level is below 50 nanomoles per liter (nmol/L), she does not have enough of the vitamin to pass on to the fetus. This leads to the fetal brain cells not being activated. Therefore, this may result in a host of neurodevelopmental disorders, including autism.

Another factor that could explain the relationship between vitamin D deficiency and autism is maternal autoimmunity. Deficiency of the vitamin prevents the mother’s body from producing much needed T regulatory cells. The absence of these cells makes the developing fetus vulnerable to attack from the mother’s immune system. This may result in abnormal fetal development, which could increase the likelihood of the child developing autistic traits.

Can supplements help?

It’s a known fact that autism is a result of multiple factors. Deficiency of vitamin D could just be one of them. Researchers are now trying to understand whether providing Vitamin D supplements to mothers will reduce the likelihood of the baby showing autistic traits or not.

The study of vitamin D and its relationship to autism is still in its infancy. Only time will unveil the truth of what goes on in the womb. 

Disclaimer: The vitamin health information published on this web page is solely intended for educational purposes. VitaminsOnly strongly recommends to consult health care professionals for any questions concerning your health.

Recommended Product:


Items have been added to your cart

This product has been added to your cart.

Please select below how you would like to proceed.