about a month ago i was 2 days away from getting paraguard and so i did a google and found a random thread on some board about negative copper iud experiences and it was long (bearing in mind you're less likely to spend time posting info when you're satisified with an iud, as many women are). the weight gain and bloat are not uncommon, it seems to be related to a mineral deficiency/ imbalance, maybe too much copper and not enough zinc i think? i'd never heard ANYthing related to this (and certainly not from my doc) but it makes sense to me somehow, though not sure how to "cure" it. hope this helps somewhat, not sure where to find more info about it though.