Translation of renegar

At noon the oldest soon came home. He was a doctor and gave me some salt and other Cuban medicine. I was reluctant to swallow that stuff but the pain and the doctor's smile persuaded me in the end.
Unfortunately, it is a natural and eternal phenomenon of human beings. Whereever people have been, it appeared too. Please let me define racism in my next email to you and please share also your thoughts.
I will start working on it next week. You can also have a look at our site and give me some feedbacks. You know Spanish better than I do. so please be patient with our questions. I would really like to help.