Don't we have an extremely limited ability to absorb hydrogen from water, especially if we drink it – won't we just breathe it out again?

Yes, there are limitations to how much hydrogen we can absorb when consuming hydrogen-rich water. As discussed by Andrew Huberman in the How to Optimize Your Water Quality & Intake for Health, our bodies have a limited ability to absorb hydrogen gas from water.

1. Absorption Limits:

   • While there are some benefits to hydrogen-rich water, the amount of hydrogen that can be absorbed through the digestive system is relatively low.

2. Exhalation:

   • After consumption, any excess hydrogen that isn't absorbed or utilized in the body may be exhaled. This means that a significant portion of hydrogen could be lost rather than used effectively.

In summary, while drinking hydrogen-rich water can offer certain benefits, the efficiency of hydrogen absorption is limited, and excess hydrogen may simply be exhaled if not absorbed by the body.