When Ancient Practice Meets Modern Biology
An essay arguing that the Wheel of the Year — often dismissed as a Celtic pagan calendar — is better understood as a biological map of seasonal human cycles. The old knowledge was right about the thing: that specific times of year carry specific qualities that affect human physical and emotional states. The mechanism the ancients guessed was different from what modern biology describes, but the observation was accurate.
What the Essay Covers
The essay connects traditional seasonal markers (solstices, equinoxes, cross-quarter days) to documented biological phenomena: circadian rhythm shifts across seasons, vitamin D cycles, seasonal affective patterns, and the hormonal changes that track the light-dark cycle. The argument is not that the ancients understood endocrinology. It is that they observed real effects and encoded them in a practical calendar system that modern biology is only now confirming.
Explore
- All writings
- Wheel of the Year — the site's seasonal calendar tool
- Biorhythm — cyclical biological patterns
- Did the Ancients Understand Frequencies Better?
By Alex Vizcroft.