Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Robert F. Kennedy Jr. has gone after fluoride, a move that medical experts widely disagree with. Here's what health pros want you to know.

Fluoride, a mineral that occurs naturally in water, soil and air, has been shown to prevent dental cavities, or tooth decay. It works by strengthening the tooth's enamel, its hard outer surface ...

Fluoride, a mineral that occurs naturally in water, soil and air, has been shown to prevent dental cavities, or tooth decay. It works by strengthening the tooth's enamel, its hard outer surface ...