I’ll take the:
According to the Centers for Disease Control and Prevention, “the safety and benefits of fluoride are well documented and have been reviewed comprehensively by several scientific and public health organizations.”
…over your:
fluoride only helps out when used topically (like in toothpaste). Drinking it may actually weaken your bones, supposedly.
That’s a fair question. I Googled around and arrived at a couple different gov health websites (National Institutes of Health, Cleveland Clinic) which mention that, while high levels of fluoride can be harmful, the amount put into the US drinking supply doesn’t approach that threshold.