Do you believe some people have slow and some people have fast metabolisms?

[Anonymous]

Yes

No

Updates

1 y

my t3 was 4.3 on my last bloodtest and my t4 was 11.5 which means I have high thyroid hormones and a fast metabolism... I literally lose weight if I do no exercise and eat 2500 calories a day. I have to eat 2700 just to maintain my bodyweight. I 100% believe metabolism differs

[Garud]

Yes, I have to starve myself to lose weight, but it's easy to gain it back. In 2014 when my thyroid report came back it was normal, the doctor said I weighed more than I looked.
I weighed 74 kg then and I reduced it to 64 but I also lost muscle mass, then after reducing exercise a bit I started gaining weight again and stayed there till the Covid lockdown.
I stopped walking completely, my weight went up to 108 kg and I didn't realise it until my friend told me I looked fat. Since then I have maintained my weight between 80-84 kg.
I just need to be a little more active.

[Asker]

what did they test? just TSH? mine came back "normal" (1.1) but that doesn't mean anything when T4 and T3 are both high and out of range. you should also get TPO and TGO antibodies tested which will tell you if you have antibodies being produced that attack the thyroid. if that's the case you need to get tested for HLADQ2, a gene that treats gluten as an antigen (enemy) and creates a cross reaction with the thyroid. You can have no wheat allergy, no celiac disease, and still have issues with your thyroid from gluten. the bad news is once your body starts attacking your thyroid it probably won't stop.

[Garud]

I don't remember the terms mentioned in the report but I remember that all results were within the range. And I have nothing to worry about.
Your case is different and you need to pay extra attention to your health and eating than other people do in this regard.
My immune system is only attacking the melanin of my skin (vitiligo), but it is under control now. After a certain age, I won't care whether I look like a zebra or not, but for now, I am fine.

[Asker]

ok well most doctors only test TSH so I was just saying. none of them will test TGO / TPO. because it's too expensive and "medically unnecessary" (insurance will deny the claim).

[Sonorous]

I believe that most people don't have fast metabolisms. But I would be foolish to never believe that anyone could. Especially if their energy output is consistently high enough to be demanding of more calories to sustain their weight. However, I'd be less inclined to believe that a certain body composition requires more energy simply for existing than the average person of their size, build &/or activity level would.

[Asker]

if someone has hyperthyroid they might burn 500-1000 more calories a day at rest. to the point where weight loss is a symptom

[Sonorous]

They don't represent the human average though.

[Nikki1989]

I thought that was common knowledge.

[ProbablyClueless]

Who wouldn't believe that? I thought it was understood medical science.

[Wise4myage]

Yes, that is correct.

[LunarEclipse433]

Many factors affect their rate