Final answer:
Dr. Filipovsky's reference to free radicals and tissue damage supports the oxidative stress theory of aging, which posits that cellular damage from oxidative stress is a significant factor in the aging process.
Step-by-step explanation:
Dr. Filipovsky is promoting an oxidative stress theory of aging when talking about the buildup of free radicals and how their accumulation leads to tissue damage. Aging, as described by this theory, results from accumulated cellular damage caused by oxidative stress, which is an imbalance between the production of reactive oxygen species (ROS) and the body's ability to detoxify these reactive intermediates. Over time, this damage can contribute to the physiological and anatomical effects of aging, including age-related diseases like cancer, cardiovascular disease, and neurodegenerative disorders.