Hi Lauren, yes I did know about the keto diet and epilepsy for young children.
As for all the chemicals and cancer, one of my friends, with breast cancer, was asked by her surgeon to put a tack on where she had grown up. When she looked at the map she explained that there was no space for hers; Like you and your husband, she grew up, surrounded by farms, with chemical spraying all around her.
I'm wondering if you have ever read the work of Dr. Jason Fung. He's Canadian nephrologist, and a wonderful advocate for fasting. He is also an advocate for keto. https://www.google.com/search?q=jason+fung+books+kidney+disease&client=firefox-b-d&channel=crow5&ei=zt5tYr2iINraz7sPmOWcOA&ved=0ahUKEwi9wYvoj733AhVa7XMBHZgyBwcQ4dUDCA0&oq=jason+fung+books+kidney+disease&gs_lcp=Cgdnd3Mtd2l6EAwyBQghEKABMgUIIRCgAToHCAAQRxCwAzoECAAQQzoGCAAQFhAeOggIABAWEAoQHjoFCAAQgAQ6BAghEBU6BwghEAoQoAE6CAghEBYQHRAeSgQIQRgASgQIRhgAUKgFWMBBYKtVaAFwAXgAgAG2A4gBvSySAQgyLTE4LjIuMpgBAKABAcgBCMABAQ&sclient=gws-wiz