⚖️ Too Little, Too Much, Just Right: Sleep's U-Shaped Ageing Curve 😴📉

😴🧠 How much sleep is "just right" for healthy ageing? A remarkable Nature study of ~500,000 UK Biobank participants demonstrated a striking U-shaped relationship between sleep duration and biological ageing across 23 ageing clocks, 17 organs, and 3 omics platforms. 🌙🧬 Both short (8 h) sleep were associated with accelerated ageing, higher systemic disease burden, and increased all-cause mortality. The biologic "sweet spot" appeared to be ~6–8 hours/night. ⏳❤️ An elegant reminder that sleep is not passive rest — it is active systemic repair. Source: The MULTI Consortium et al. Nature (2026) DOI: 10.1038/s41586-026-1052