Did I step out of line?

Maybe just phrase it a bit better next time.

"Hey Uncle, Are you OK with these with your health? I'd be happy to take one for the team if you want me to take yours."

is probably a better way to say it. It doesn't make any assumptions, but still offers support if he wants it.

I mean, it sounds like you handled it just right.

He listened, he heard the love behind it, and listened to the love, not the 'rudeness' of your requests.

Never be ashamed of speaking out with love to tell people what they need to know. They may not heed you, and they may not even acknowledge your reasons ... but they will always hear the love.

But lay off the cake - that stuff will kill you!

You phrased that shit badly, like really badly. You're also not the health police. I guarantee you do unhealthy shit too but probably don't have someone standing over you making rude comments like you're a child.

It was unbelievably rude of you to state "You shouldn't have that, I'll have it for you". This is the type of comment where the message is lost in the delivery for the most part.

Learn to speak more gently and ask rather than tell.

A couple of notes:

• It takes a lot more than a shot or two to fuck too much with high blood pressure (if he's taking medication to control it)

• You don't go into the nature and severity of the kidney problems, but it's possible that a little alcohol won't make them worse (this is where a gentle question about it comes into play rather than laying down the law as you did). There's a rather large difference between "no longer able to process alcohol" and "it'll make me feel shitty for a day"...I know people that are severely lactose intolerant and yet still insist on getting a shamrock shake every year, they just accept the bad time to follow because they enjoy the shake so much.

• People with hyperglycemia that aren't constantly in the hospital have generally learned what they can manage, it's usually best to let them manage their own shit.