that will be good for his health, and that's more important than anything else.

But the hard political rally is that this isn't going to answer the questions folks will have about his age.

And like it or not, primary voters will have that question for him.

Ultimately, he has to do what's best for his health over everything else though so I think this is the right decision, although I'm not sure he shouldn't just drop out and endorse Warren. His endorsement would pretty much seal her winning.

adverse event, which plane travel right now could trigger, he will stay in. It is not going to take forever for him to be out of the woods if he follows Dr’s orders.

As it should be.

...whoever gets the job will be faced with stress 24/7..look how PBO grayed

It's not an easy job, and it takes a terrible toll on whoever is elected.

The sun in northern areas can be intense this time of year in the late afternoon, pre-dusk, it throws off everything in regards to video and photography.

He looks and sounds awful.

This basically confirms his campaign is over.

Hope he gets well soon.

I hope that Sanders will heed his doctors' advice.

Running for president is not something that can be done remotely or with a dramatically reduced travel schedule. And that’s just the logistical issues.

The perception is another. I suspect there will always be a swath of voters that will stick with him no matter what, but there are and will be a lot of Sanders supporters who will start looking for other candidates.