They are also available in dietary supplements, such as fish oil
A prospectively randomized pilot trial in patients with head and neck cancer and non small cell lung cancer
doi:10.1111/j.1469-8137.1993.tb03863.x
Scientists often refer to it as the "master antioxidant" because of its central role in cellular protection and detoxification
Additionally, when considering cognitive decline caused by aging, dietary intake of caffeine can protect the brain by regulating the Bax/Bcl2 ratio, caspase-3, and PARP-1 levels to reduce oxidative stress, and COX-2, NOS-2, TNF, and IL-1 to further reduce D-galactose-induced neuroinflammation and neurodegeneration (Ullah et al., 2015)