Stanford Medicine Research Reveals Key Changes Linked to Aging and Disease Risk
Biological clocks are internal mechanisms that regulate rhythms in organisms, influenced by environmental cycles like day and night. The circadian clock, first identified in fruit flies, operates through feedback loops involving key genes such as period, timeless, clock, and cycle, which create oscillations for environmental adaptation. While the principle of oscillating gene expression is consistent across species, specific clock genes vary.
Light is a crucial environmental signal for synchronizing these clocks, aiding individuals in adjusting their rhythms when traveling across time zones, though this process takes time. Humans typically adapt more easily to longer days than shorter ones.
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A visual representation of the biological clock and the molecular shifts that occur as we age. |