[Leroy S. Mort]

It's been known for more that 20 years that kidney stones are more prevalent in the SE United States than in other areas. Temperature is one suspected reason. Also diet and minerals present in the water.

I've had three, and all presented in the summer.

[Up Yours Marxists]

“I’ve had three, and all presented in the summer.”

AlGore would disagree. He says you’re getting all these stones because of the pickup truck you drive. Time to add extra heat shielding to your transmission tunnel.

And it wouldn’t hurt to wear fireproof undies either.

[Gaffer]

Yes, but is “Global Warming” responsible?

[palmer]

I've had three, and all presented in the summer.

That may be, but you are still here typing. Deaths from nearly every cause of death (heart attack, stroke, cancer, etc) are higher in winter. There are no causes of death which decrease in winter except lightning, heat stroke and similar rarities.