Table 1.

Terminology of the most studied dietary interventions of food deprivation.

Terminology	Dietary Intervention
Fasting	Consumption of only water, for a period varying from 12 h to 3 weeks
Short term fasting (STF)	Fasting for an average of 3–5 consecutive days
Periodic fasting	Fasting repeated every 2 or more weeks
Intermittent fasting	Alternate day fasting (≥16 h) or 48 h of fasting/week
Fasting mimicking diet (FMD)	A regimen providing low calories, low amounts of proteins, and high amounts of fats. FMD provides 4600 KJ (11% protein, 46% fat, and 43% carbohydrates) for day 1 and 300 KJ (9% protein, 44% fat, and 47% carbohydrates) for days 2–5
Calorie restriction (CR)	20–40% reduction in calorie intake with reduction of all ingredients without intercepting the intake of vitamins and minerals, usually used by experts as synonym to dietary restriction (DR)