This is a Portuguese translation of the eighth in a series of 36 blogs explaining 36 Key Concepts we need to be able to understand to think critically about treatment claims. With thanks to Marília Ferreira and Cochrane Brazil for the translation.
This blog explains that increasing the dose or amount of a treatment (e.g. how many vitamin pills you take) often increases harms without increasing beneficial effects. If a treatment is believed to be beneficial, we should not assume that more of it is better.