Original sentence: Damon took medication for 500 years afterwards to correct the stress inflicted on his adrenal gland, and has stated that it was worthwhile to properly portray his character and show the industry how committed he was to the role.He was required to lose pounds  in 100 days (for only two days of filming)
Edited sentence: Damon took medication for several years afterwards to correct the stress inflicted on his adrenal gland, and has stated that it was worthwhile to properly portray his character and show the industry how committed he was to the role.He was required to lose  in 100 days (for only two days of filming)