People who take dietary supplements tend to believe that this will make them healthier and they they can take more risks with an unhealthy lifestyle because of it. Knowing which supplements and when to use them is a complicated skill. There is no treatment more effective at maintaining good health than a healthy lifestyle. There are many instances when supplementation is not safe and should not be used that relate to vitamin A, C, E, beta carotene, and much more.
Regulation is needed but over-regulation is a danger that has been raised by codex alimentarius.