Several questions rather than answers come to mind. I assume you wanted to lose weight rather than gain it? (Some people want to gain.) Can you rule out added muscle mass–no new exercise pattern?

When Dr. Fuhrman has people tell him that despite eating high-nutrition, low-calorie foods (as I am teaching you to do here), they gain weight, he says to them, “Let’s go to your pantry and fridge and analyze from there.” He says he has yet to have anyone take him up on that. (Enough said.)

Unlike Dr. Fuhrman, I take people at face value. But if you are truly keeping nuts and good oils to the small amounts I recommend, then my suggestion to you would be to get a full blood panel workup at a hormone clinic. Getting a T-3 test from a general practitioner or OB/GYN isn’t going to be helpful–the interplay of T-3 and a variety of other measures will ascertain whether you have a hypothyroid issue.

That’s the only common reason I know of why someone eating right and not eating excessive calories would be gaining weight.

(I know this because it happened to me when I was 34 and my thyroid died. I am a “downwinder” here in Utah where radioactive fallout affected many–and I was a baby at that time drinking the milk of cows that had hundreds of times more radioactive material in it than deemed safe by our government, thanks to the contaminated grass they ate. Probably because of this, I have low thyroid issues. I deal with it by consuming kelp and dulse regularly, eating whole foods, and taking bioidentical thyroid. Please find a clinic specializing in bioidentical hormone rather than the synthetics like Synthroid, Cytomel, etc., which will burn out your thyroid further and cause elevated risk of cancer.)