Due to its chemical structure, curcumin may act as a natural free radical scavenger. Curcumin can decrease the release of different interleukins through NF-κB. Curcumin could act as a stress response mimetic that induces some components of the protein homeostasis network or as it is known to bind amyloid, directly acts in the misfolded cascade [25]. The antioxidant activity and the free radical reactions of curcumin are closely related to its phenolic O-H and the C-H. It was found that the antioxidant mechanism of curcumin was based on the H-atom abstraction from the phenolic group, not on the central CH2 group in the heptadienone link. Curcumin, methylcurcumin, and half-curcumin with similar structure of O-H BDEs, indicated that the two phenolic groups were independent of each other