The problem is that I don't think you are normal thyroid.
Guidelines have changed.
But doctors and labs have not caught up.
TSH is still considered normal up to about 5, but anything over 2.5 with symptoms, including not being able to lose weight, is probably hypothyroid, and just a little replacement will correct this.
Sensitive TSH, free T4 and thyroid antibiodies should all be looked at, and an endocrinologist might be more up to date on this.
The diet you are on is really not meant to put you into a state of ketosis. In fact, plenty of calories are supplied.
There are other factors as well...including toxicity, which promotes infamation, which encourages estrogen dominance, which in turn enourages inflammation and obesity, a vicous cycle.
If this is the case, then a nutrient dense, anti-inflammtory diet is indicated.
So, the diet, and the thyorid appraisal, have to be tailored to you.
This is the venue of functional medicine doctors.
The institute of functional medicine just trained a bunch of UK docs last year.
I would call the institue and get a list, or use their find a practitioner link here
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