Lena Hofstetter

Who is Lena Hofstetter?

Lena leads our fasting and metabolic-health coverage. She designed the 14-week / 6-reviewer fasting cohort that compared 16:8, 18:6 and 24h protocols against a continuous-glucose-monitor reference, and she is the reason our fasting reviews score circle-and-celebrate ring UX separately from the actual evidence base behind each protocol. She bylines every fasting review on the site, and is the peer reviewer on every nutrition and weight-loss review where fasting windows are part of the program.

Lena spent four years as a clinical RD at a metabolic-health clinic in Zürich, working with patients on time-restricted-eating protocols paired with CGM tracking. That clinical lens — distinguishing “this app’s data looks plausible” from “this app will actually keep someone fasting at week 12” — is what informs the adherence-durability weight in our v3.1 methodology.

She drinks her espresso black, but she will absolutely break a 16:8 window for fresh bread.