Should I brush my teeth right after each meal?

Brushing your teeth right after meals might not be necessary or recommended in all cases. It's important to consider the timing based on what you consume. Andrew Huberman suggests that, following meals, especially those containing sugars, rinsing your mouth with water can be beneficial. This helps clear sugars and acids that may harm your teeth, reducing the immediate need for brushing. Ideally, swishing with plain water or water with a little salt can help remove debris without using mouthwash, as many types can harm oral health 1.

Additionally, if you're going to brush your teeth only once per day (which isn't recommended), the most critical time is at night before bed. This is due to lower saliva production overnight, making it a vulnerable time for your teeth to be attacked by bacteria. Thus, brushing at night helps ensure you're protecting your teeth when they lack the natural protection saliva provides during the day 2.