I experienced "negative health effects" after eating in my childhood about 8 kilos of apples within 24 hours. My parents even considered to call an emergency.
I was alone at home and there was a full bucket of tasty apples that our relatives brought from their garden. As a lazy teenager I decided to feed on those rather than prepare food.
And consider that if one just eats 3 apples per hour, than in 16 hours that gives 48.
That's an apple every half hour, or every twenty minutes if he slept eight hours. I've kept that pace too for hours while coding. Much better to stuff on apples than Cheetos.
Edit: wait, so you ate ~53 apples (googled average weight, came back at ~.15kg)? I call BS.