You should brush your teeth before breakfast or, if you do it afterward, wait at least 30 minutes to protect your enamel from the acidity of food.

noli's read

The idea of waiting 30 minutes after a meal or brushing your teeth immediately upon waking is based on classic recommendations from dental professional organizations, such as the American Dental Association (expert opinion). This habit aims to protect tooth enamel, which can be temporarily softened by the acidity of fruit juice or morning coffee. However, modern science adds compelling nuances to this rule. A broad literature review published in 2024 in the scientific journal Karger (review article) suggests that current data do not categorically prove that waiting before brushing reduces daily enamel wear. Furthermore, small observational studies show that brushing teeth quickly after a meal actually helps restore a protective balance (pH) in the mouth more rapidly. Dr.NEVER's advice remains an excellent common-sense option for people with sensitive teeth, but it is not an absolute scientific obligation for everyone.

the sources

No named source held this one up — that absence is part of the verdict.