Why avoid fluoride in toothpaste?

This is a topic of some debate. People choose to avoid fluoride for a few main reasons:

1. Dental Fluorosis: In young children who swallow too much toothpaste, it can cause fluorosis—white streaks or spots on the developing teeth. This is purely cosmetic but is a common concern for parents.
2. Toxicity in High Doses: Fluoride is toxic if consumed in very large quantities. This is why toothpaste tubes have warnings, but you'd have to eat multiple tubes to reach dangerous levels.
3. Allergies/Sensitivities: A small number of people are genuinely sensitive to fluoride and can develop mouth sores or other irritations.
4. General "Natural" Preference: Some individuals prefer to avoid all synthetic chemicals in their personal care products, opting for ingredients like hydroxyapatite instead.

It's worth noting that major health organizations like the ADA and WHO still strongly endorse fluoride for its proven cavity-fighting benefits. The key is to use the right amount (a pea-sized blob) and supervise kids.