FWIW, obesity eventually catches up with people. When people are young, their bodies can take the abuse. Once people get into their mid-40s or so (sometimes earlier), major health problems can kick in…heart attacks, joint damage, diabetes, kidney failure, etc. This isn’t something I’ve read either; it’s what’s happening to all my peers that never took care of themselves. I can’t even invite many of my peers to my martial arts class, because their health is so bad that it’s dangerous for them to work out at that intense level.
I recommend taking care of obesity at as early and age as possible, before damage is done.
I totally agree that avoiding obesity from the beginning or correcting it as early as possible is for the best!

I wish I had been raised eating a healthy diet (I wasn’t), learned to cope with emotions in ways other than food (I didn’t), and had the money, knowledge and willpower to have made different choices - but life doesn’t always work out that way

My comment was intended to indicate that I have never been someone obsessed with a number on a scale, emotionally devastated because of a dress size, or freaked out and obsessed with the latest diet craze
I am simply stating my own personal mindset that got me to where I am and how I’m now on my way to becoming healthy.
For me, telling me to eat healthy to avoid disease is like telling a smoker to quit to avoid lung cancer. Fear of the consequences would only motivate me a very short time - but a desire to accomplish something (like running 13.1 miles) has and will motivate me for a long time. It’s a concrete thing I want, I can measure my progress on, I can get excited about. I knew when I tried to do the race this year, that I would not be successful in finishing - I’m just not capable of that yet. But I won by starting, and I won by every mile I was able to complete (and trust me
grin I counted everyone past Mile 1 as a complete victory!)
It’s interesting you mention martial arts - as a former black belt in TKD, I’m sure your friends, if they are interested, could take beginner classes with instruction tailored to their level of fitness.
I agree someone severely out of shape can’t jump in to intense exercise without risk - but isn’t it better for someone to find a way to start working towards what they want to become? I know if I waited till I was “fit” enough to compete in races, then I’d never get there. Instead I go, do what I can safely, train in-between, and get better with every attempt

Just like when I started martial arts and couldn’t even touch my toes but gradually worked up to black belt level before moving on to a different stage in my life. (Oh my - that brings back memories LOL after all that was 5 children, 24 years, 75lbs, and a torn ACL ago.)
CJ