Maybe he's not hypo but just lower or average thyroid, but I want to see him do a hair test, I'm pretty sure will show he's in slow oxidation and reduced metabolic rate. For example I have a friend who has a high CA:K ratio which means hypo but he goes to the gym twice a day, everyday of the week and he doesn't get tired nor does he sweat much either but I know he isn't actually healthy. He is not fat or slim either and is ripped and muscly.This was back in August on Grant's 9 year update: "My weight remains very steady. My strength in the gym remains excellent. I’m cycling more now that it is summer. I try to get in about 20 km per day." That's 12 miles for us americans not using the metric system.
"the age spots on my face have significantly faded this year."
"When I go skiing in the cold temperatures (say -20°C ) I’m perfectly comfortable." You forgot to mention that it isn't just not sweating, it's also not getting cold while skiing. Do you know any hypothyroid person that can ski and not get cold feet?
His joints are near perfect.
If that's a picture of someone declining into low thyroid then I'll take it! Clearly he's producing ATP just fine. My husband sweats excessively just doing mild activity, also gets out of breath, though he has a lot of muscle mass like a strongman. He is 287 pounds at 5'11. He has to use a CPAP at night. If he could be more like Grant's health I'd take it!
I think Grant could eat other foods, but he'd rather not, he is doing this to prove we don't need vit A. Onions aren't exactly a food animals are just salivating at are they? It's only us humans that think onions are so tasty, I've been avoiding them lately and had a bunch of garlic and onion last night, I nearly vomitted. It's vile stuff. Why do we eat it? I'd like to be able to eat it if I'm forced to, but I don't think it's actually a healthy food.
If you can't tolerate onions then you have some gut issue or sulfur metabolism issue. Garlic I do agree though I don't think is great.