How can i convince my husband to take his prediabetes seriously? he just doesn't care?

If u are in : Charge of his meals,you can control his diet,in a supportive way.Nobody's perfect.

Stay in the game.: Prediabetics can easily become diabetics if they're not careful, and as such they'll be at risk for all the health consequences of diabetes. Prediabetes is a yellow light, if you will. If not taken seriously, health can seriously suffer.