In summary, PQQ is an intriguing compound with a range of potential health benefits, particularly regarding mitochondrial function, neuroprotection, cardiovascular health, and metabolic regulation. As research continues to unfold, PQQ may become a valuable addition to the toolkit for maintaining health and vitality, especially as we age. While more studies are needed to fully understand its mechanisms and long-term effects, the current findings highlight the potential of PQQ as a beneficial supplement for those looking to enhance their overall well-being.