DWQA Questions › Category: Extraterrestrial Interlopers › What percent of age-related, or Primary Sarcopenia, is caused by chronic viral infection somewhere in the body? 0 Vote Up Vote Down Nicola Staff asked 16 hours ago We see this as being a critical driving force of Primary Sarcopenia in about 60% of cases. Please login or Register to submit your answer Username or Email Address Password Remember Me Connect with: