[6][7] Pavy died on 19 September 1911 and was buried in a family vault on the western side of Highgate Cemetery.

Pavy was a leading expert in diabetes, and spent almost 20 years trying to disprove Claude Bernard's theory of the glycogen-glucose metabolic cycle.

[9] In 1873, Pavy authored A Treatise on Food and Dietetics, which recommended almonds and nuts as bread substitutes, and promoted a low-carbohydrate diet to treat diabetes.

[9] His diet allowed all kinds of butcher's meat (except liver), cheese, eggs, fish and some green vegetables.

All sugar was forbidden, including all kinds of fruit, pasta, and potatoes but he allowed spirits and wines that had not been sweetened.