What’s the minimum amount of calories you can eat in a day and remain healthy ?

[LovelyYellowLabrador]

I’m 5 ft 4

Started dieting this Jan, but I’m scared I might end up with an eatting disorder

Friend (scientist) is 5'2" and says she rarely needs more than 1100/day. She has a sedentary lifestyle & remains a healthy weight -- loves to cook so always cooking for others! Big focus on quality calories.

Funny thing about becoming middle aged is I am unwilling to waste my calories on anything that isn't very nice tasting & ideally full of good nutrients.