Is NAD your best shot at longevity?

Unlock the Editor’s Digest for free

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.

In the top compartment of my fridge, next to a slightly shrivelled garlic bulb, is a vial of clear liquid. Should I pluck up the courage to inject myself in the stomach every other day, it will reportedly reverse the ageing of my cells, return my metabolism to that of a 20-year-old, improve brain fog and fill me with energy. Oh, and maybe tackle my crow’s…