More than 60% of America is overweight, will be 80% by the time I begin practicing in 6 years. Judge them? Literally I would get tired or won't have the mental endurance to keep judging every person who is overweight.
People need to do things they love. Everyone should have/find a passion or hobby that requires some physical exertion. Whether that be shopping, walking the dog, anything.
Even if you don't lose weight, 30 minutes of exercise a day can lower LDL, increase HDL, and reduce CAD and stroke risk by 60% WITHOUT EVEN LOSING WEIGHT. The mere physiologic effect of working out / exercising is enough to do that. So, no, don't judge people for being overweight. Encourage a hobby that can make them be active, and hope that sticks.
I know I'm talking about the lens of patients here when I say this, and the question is posed to classmates - but in all honesty, the reason so many of my classmates are NOT overweight is because the average medical student does not reflect the current population of America.
Believe it or not, we're a very privileged group, and most of us come from wealth, and if not wealth, then at least a strong middle class family with a strong sense of values and community. That translates to a fitter / attractive group of medical professionals. So, yes, the 4-10 overweight people in the class might stand out like a sore thumb, especially when we all take off our shirts in the OMM lab, but, no, just as I would get tired judging 80% of America for being overweight, I don't judge the overweight kids in my class.