Cigarette smoke generates huge amounts of free radicals -- molecules that attack and overwhelm the body's natural defenses. The result is a chain-reaction of damage throughout the body -- including cells, organs, and hormones involved in keeping bones healthy.
The toxins upset the balance of hormones (like estrogen) that bones need to stay strong. Your liver produces more estrogen-destroying enzymes, which also leads to bone loss, says Kaur. "Smoking makes bone loss even worse in the menopausal years. It adds to the bone loss that's already occurring."
Smoking triggers other bone-damaging changes, such as increased levels of the hormone cortisol, which leads to bone breakdown, says Kaur. "Research also suggests that smoking impedes the hormone calcitonin, which helps build bones -- so that hormone can't do its job."
There's more: "Nicotine and free radicals kill the osteoblasts -- the bone-making cells," she explains. "Smoking also damages blood vessels, so there is poor blood supply of oxygen. People who smoke have repeated fractures. Studies show that when a smoker suffers a fracture, they don't heal very well because of poor blood supply."
out loud! Yes. I have been a trucker a waitress and a mother of 4. Need I say more.
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