I’m at risk for osteoporosis, are there any foods I should avoid?

DEAR DOCTOR K: I am at increased risk for osteoporosis. Are there any foods or drinks I should avoid?
DEAR READER: Osteoporosis is a bone-weakening condition that increases your risk of fractures. Though your bones may seem unchanging, they are continuously being broken down and rebuilt. (I've put an illustration of this process below.) Osteoporosis occurs when more bone is broken down than is rebuilt. Osteoporosis is most common in postmenopausal women, but other people are also at risk.