It does depend on your tdee total daily energy expenditure and BMR base metabolic rate but all the legit info you can find would suggest you talk to a doctor before going below 1500. If I recall correctly you can start to lose muscle and bone density, and bone density doesn’t come back.
Assuming you’re a male, you should not drop below 1500 cal a day, it can cause permanent issues.
Really? Somehow I doubt that. I’m short (165cm) and I believe I can run below this threshold just fine.
It does depend on your tdee total daily energy expenditure and BMR base metabolic rate but all the legit info you can find would suggest you talk to a doctor before going below 1500. If I recall correctly you can start to lose muscle and bone density, and bone density doesn’t come back.