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Soon after you quit, your circulation begins to improve, and your blood pressure starts to return to normal

Sugar Bjork adds, Every time we eat sweets, we are reinforcing those neuropathways, causing the brain to become increasingly hardwired to crave sugar, building up a tolerance like any other drug. Indeed, research on rats from Connecticut College has shown that Oreo cookies activate more neurons in the pleasure center of the rats brains than cocaine does (and just like humans, the rats would eat the filling first)

(Reuters Health contributed to this story)

Surgeons generally recommend waiting at least 46 weeks after surgery before resuming smoking