The existence of the Preston curve has been used by Lant Pritchett and Larry Summers to argue that poor countries should focus on economic growth, and that health improvements will come about spontaneously as a result of increases in income.
Prestoni kõvera olemasolu on kasutanud Lant Pritchett ja Larry Summers argumenteerimaks, et vaesed riigid peaksid keskenduma majanduslikule kasvule ja sissetuleku suurenemine toob iseeneslikult kaasa tervishoiu parenemise.