Beyond energy production, mitochondria are involved in several other critical cellular functions. They are key players in the regulation of metabolic pathways, the maintenance of cellular calcium homeostasis, and the initiation of programmed cell death or apoptosis. Their ability to regulate the balance between energy production and reactive oxygen species (ROS) generation is vital for cellular health. Excessive ROS can lead to oxidative stress, which has been implicated in various diseases, including cancer, neurodegenerative disorders, and aging.