Complex sentence: Mitochondrial decay is a progressive disruption of mitochondrial structural integrity and functional ability with advancing age, can cause impairment in cellular energy production and hence the decline in normal function, particularly in organs with high energy consumption such as the brain and the heart.
Split into simpler sentences: Mitochondrial decay is a progressive disruption of mitochondrial structural integrity and functional ability with advancing age. It can cause impairment in cellular energy production and hence a decline in normal function, particularly in organs with high energy consumption such as the brain and the heart.