clock-modulating-flavonoids-future
closing discussion on future compoundsSiim predicts that circadian clock‑modulating compounds like nobilitin (from citrus peel) will become a major geroprotection category, as clock dysfunction is a yet‑unrecognized hallmark of aging.
Why this matters: It’s a forward‑looking stance that moves beyond the usual list of supplements; he ties it to his broader view that circadian biology is fundamental and that interventions must work with the clock.
The circadian clock controls metabolic rhythms, and its amplitude dampens with age. Most longevity research ignores the clock; nobilitin was discovered in an unbiased screen by Takahashi’s lab as a strong clock modulator.
Siim pointed to work where nobilitin, a flavonoid in citrus peel, protected old mice from age‑related metabolic decline, with effects abolished when the clock was genetically disrupted. The compound’s benefits increased as the clocks of the animals deteriorated, making it particularly suited for later life. He also noted that ergothioneine and lithium have chronobiotic properties, but nobilitin appears to target the clock directly and may become the prototype for a new class of geroprotectors. He speculates that many supplements already discussed — NAD boosters, CKD inhibitors — affect the clock via sirtuins and NAMPT, opening the door to timed dosing strategies. He calls for more research on clock‑specific interventions.
the effects of noilitin on the clock seem to increase as animals get older, as their clocks function worse and worse.