Most likely this means you will be walk-running at the beginning or even just walking up a steep hill. Running is an activity of many small incremental gains. Every week you can go a little tiny bit further but if you amortize that over a year it makes a big difference.

Many go into running too fast and hard which leads them into not liking it because they feel absolutely miserable the entire time or they injure themselves due to bad form.

I had a good physical therapist which took me from nothing and for the first few months I wasn’t even running but doing foot and ankle strengthening because that part of my kinetic chain was so weak.

Which will burn somewhere on the order of 400 excess calories - about as much as a typical North American muffin (or two of the big cookies from Subway). But worse, your body was probably going to use most of those calories on something else (fidgeting, running a higher body temperature, other immune responses including inflammation) anyway, assuming that you haven't been gaining weight with your current habits. Exercise is healthy and reduces stress, but it just isn't effective for weight control. Humans are animals, and animals have on the order of a billion years of homeostasis technology behind them.

>eat reasonably healthy

Hardly anyone has any accurate picture of how much they consume, as measured in calories, except for those with actual explicit experience of measuring and accounting it.

If a pill happens to end up helping you eat an amount that lets you maintain a healthy weight, I'm all for that. But it's important to have your mental model properly calibrated.