In other words she’s stating that as kittens grow up and become sub-adults and adults they stop producing lactase, the enzyme which digests lactose in milk sugar. So this is all about the age of the cat. Therefore, the commentaries and articles about cats being lactose intolerant relates to sub-adult cats and older which is not always made clear. It does not, according to Linda Case apply to kittens who are drinking their mother’s colostrum which does contain lactose and which is digested by the kitten.
