Indeed. I readily confess to having been a vainglorious glutton who saw life as a progression from one fine restaurant to the next.
Orthodoxy did cause me to drop from nearly 300 lbs to around 200 lbs. Many of my trousers can no longer be coerced into fitting, that is to say, staying up, even with the belt at an oppressive notch. So I cannot wear those unless I want to revert to the disagreeable exposed underwear look that was popular if memory serves in the mid to late 1990s.
Now you might be accused of a different kind of vanity, glorying in your new found lean physique.