Yeah she is 37.

It’s both genetics and lifestyle for things like smoking. The classic analogy is that you’re like a cup being filled with water - if that water ever overflows, you get diagnosed with a multifactorial condition, be it diabetes, cancer, alcoholism, etc. Everyone is born with a certain amount of water in their hypothetical cup, and that represents your genetic predisposition to that condition, but then your lifestyle comes in, and certain decisions you make add additional water.

So, someone who was lucky enough to be born without much water can afford to pour as much as they want into their cup for their whole lives without it overflowing, while someone born with their cup nearly full from the start has to spend their whole life making sure not to add anything or it will probably overflow. It’s just one of the ways nature is unfair.

Keith Richards’ senior class photo.

It really is crazy. My grandmother lived into her 90s while smoking most of her life

Exercise and socialization are more strongly associated with a long life than smoking is.