Over the past few years, more and more research has been published revealing just how fundamental our gut microbiome is to our health. It can affect everything from our response to fear and negative stimuli, to our weight and mental health, to whether or not we develop autoimmune diseases such as lupus and type 1 diabetes.

Now, a new study published in The Journal of Immunology has found a link between the gut microbiome and the neurodevelopmental condition autism using animal studies. However, it is not our own microbiome that affects whether or not we develop autism, the researchers say – it’s our mom’s.