The Pritikin diet is a low-fat, high-fibre diet which forms part of the "Pritikin Program for Diet and Exercise", a lifestyle regimen originally created by Nathan Pritikin.
[1][2] The diet is based around low-fat, high-fibre food and limiting red meat, alcohol, and processed food.
[3] When it was launched, the diet was considered radical, but its precepts are now considered largely in alignment with mainstream nutritional advice.
[3] The Pritikin Diet has been categorized as a fad diet with possible disadvantages including a boring food choice, flatulence, and the risk of feeling too hungry.
[4] Gastroenterologist David Hershel Alpers and colleagues described the Pritikin diet as "nutritionally adequate, but the low fat content makes it unpalatable, and the likelihood of compliance is low.