Is it true that having lived to age 65 increases your chances of reaching 90, and why...?

Most humans are deeply biased to assume they will live to 90. But mathematically, your true odds of getting there completely reset the moment you turn 65. When health organizations report an "av…

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I really need a cigarette. I'm 10 weeks pregnant. I haven't smoked a cigarette in 5 w...?

Fifty years ago, when my late wife first found out that she was pregnant, her OB/GYN asked if she smoked. She said she did. He said, “Not if you want me as your doctor,” and proceeded to cite th…

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