He's a father... He's protective, and worried. Deal with it. Be glad he's worried about you especially if you passed out. Maybe you're not getting enough protein, or enough of something. Or maybe not enough meals during the day.. Once a day, or twice a day definitely isn't enough. Your body could be starving, so when you do eat - it's like omg, food. Listen to his worries, don't shut him out....

Did you tell him you passed out cause you stuck a screwdriver in your finger? In all seriousness though, he's probably just worrying like parents do. Try explaining your weight loss plan to him in detail, what you're doing, why it's healthy... eventually it will stick (hopefully! )

If my mother found out I'd passed out, she'd probably move in with me and attach herself to my hip. It's just how parents are. Be glad you have a caring father who looks out for the wellbeing of his little girl.

Is there a reason you passed out aside from malnutritian? If so, explain that reason to him, and if its from extreme pain, demonstrate it for him...lol...I'm just kidding. Parents are your protectors by nature, they cannot turn that switch off no matter how hard they try. Look at it like this, at least he loves you enough to care.

lol last time i fainted at the dinner table my mum ran around the table and caught me before i hit the floor (its not a small table either!) and i was A&E before you could blink he's probably just worried, it'll pass when he sees you're fine