I think my H is having MLC

[Cadet]

The confusion is actually a good thing. It would certainly indicate a MLC.

I have lost over 40 lbs, so none of my old dress clothes fit anymore.

Welcome to the MLC diet. You need to take care of your self and if you want to continue to lose weight that is OK but understand that it is also a sign of your own depression. Take a look at the stages of the LBS and you can see your progress in journey.

Have you read the DR book?
Read, study , GAL.

Remember that knowledge is power.