chemistry of aging

Aging in chemistry primarily involves changes in molecules within our body, especially DNA, proteins, and cell membranes. Over time, damage accumulates from environmental factors and natural processes, leading to broken or misfolded proteins and worn-out DNA. These molecular changes impair cell function and repair, causing tissues and organs to decline. Additionally, the production of reactive molecules called free radicals can cause further damage. While some damage is unavoidable, the body's ability to repair and defend itself diminishes with age, resulting in the gradual physiological decline associated with aging.