No it doesnt
You are in a bed most of the time, you wont be eating a lot. Your muscles atrophy due to lack of use and you dont have the resting metabolic rate you once had. Eating junk food like McDonalds and drinking soda isnt goiing to have that much of an impact on your healing or bone growth which imo are largely down to a combination of genetics and luck
Im currently in beijing lengthening. Ive lost 31kgs since April this year ive atrophied hugely and i currently look like a concentration camp victim. My diet here has consisted of a lot of junk food, i eat a few yoghurts a day, some sponge like bread thing for breakfast and a pot noodle type for dinner. I cannot eat the food here it is by far the worst most salty food i have ever tasted in my life it would kill the appetitenof anyone.
Regardless of my poor diet my bone growth the other week was described as superb. Bone growth just like height itself is largely a combination of genetics and oure luck just like height itself.
There are folk here eating good foods taking calcium tablets etc and their bone growth is poor