What hypothyroidism does to weight — and why "normal" labs don't always mean normal metabolism.
Overt hypothyroidism
A clearly underactive thyroid (elevated TSH, low free T4) is associated with significant weight gain and a meaningful reduction in resting metabolic rate. Even with treatment, many patients don’t return to their pre-illness weight — partly because the weight gain triggers additional metabolic changes that persist even after thyroid levels normalize.
Treated hypothyroidism
Patients on thyroid hormone replacement who are biochemically euthyroid (normal TSH) may still have persistent metabolic changes — lower resting metabolic rate, altered fat distribution, impaired thermogenesis — that make weight loss harder than it would be in a patient without thyroid history. Medication normalizes the hormone. It doesn’t always fully normalize the metabolism.
A program that works with your metabolism, not against it.
Assessment with relevant bloodwork
Physician oversight throughout
If your thyroid management needs adjustment, our supervising physician can assess this or coordinate with your GP. We don’t treat hypothyroidism independently — but we manage your weight program in full awareness of how your thyroid status affects your metabolism.
Prescription support where appropriate
Muscle preservation protocol
Hypothyroidism and its treatment can affect muscle mass and function. Our protocol — body composition monitoring, protein targets, resistance framework — protects lean mass throughout treatment and supports metabolic rate.
Who you'll work with
WeightDoctor patients work with a clinical team, not a single provider. Your physician supervises your care. Your counsellor delivers it — week by week.
Is this program right for you?
If you’ve been told your thyroid is fine but your weight hasn’t responded to genuine effort, a medical assessment is the appropriate next step.
Available virtually across Ontario.
The full WeightDoctor program is available virtually to patients anywhere in Ontario.
Is WeightDoctor right for you?
WeightDoctor sees patients with PCOS at a range of starting points — those newly diagnosed, those who’ve managed PCOS for years without finding an approach that works, and those who have tried prescription support elsewhere without adequate clinical backing.
Candidacy is determined at your medical assessment. Not every patient is a candidate for prescription weight loss medication — but every patient who comes through a WeightDoctor assessment leaves with a clear clinical picture and a specific plan.
Available virtually across Ontario
The full WeightDoctor program — including assessment, weekly counselling, prescription support, and monitoring — is available virtually to patients across Ontario. You don’t need to be in Mississauga.