#brain aging

2 articles

Approach: conceptual metaphor, with a natural palette.

A single walnut is cracked open on a rough wooden board, and its two halves sit slightly apart. The halves are shot in tight macro from a low three-quarter angle. The walnut's brain-like folds are the focus. Between the halves, a thin cluster of fine, dark brown tannin-stained fibers stretches like a bridge. Beside it sits a small pile of shell fragments with a few strands of green walnut husk. A small, sharp, electric green (#00e676) leaf catches the light at the edge of the frame. The background is a softly blurred window-lit kitchen garden in leafy greens and warm earth tones. Soft natural daylight comes from the left and gives gentle shadows and visible texture on the nut's ridges. The mood is calm, curious and quietly scientific, with a fresh morning feel and no blue cast.

乌洛酮酸 A：核桃在肠道中的代谢产物与大脑皮层厚度的关联

BY NOVA CHEN · 2026年11月3日

吃下一颗核桃后，肠道菌群会将其中的多酚转化为乌洛酮酸等代谢产物，这些产物可能与大脑衰老程度相关。在为期两年的 WAHA 试验的 MRI 子研究中，尿中乌洛酮酸 A、乌洛酮酸 C 及乌洛酮酸 C 葡糖苷酸盐的升高幅度越大，核桃摄入者的皮层厚度保持得越好，尤其体现于右半球。代谢型为 B 的人群中这种关联更为显著。但这仅是随机对照试验内部的关联分析，无法证明因果关系，也不能直接说明乌洛酮酸 A 补充剂的效果。下面我们一起看看数据到底说了什么，谁可能受益，谁需要保持怀疑。

Approach: Macro science, with a Bold color field palette.

Extreme close-up microscopy-style image of a single microglial cell with fine, branching processes, rendered with the real texture of fluorescence-stained tissue: translucent, slightly granular cell body, delicate ramified arms reaching across the frame. Shot from straight overhead through a microscope objective with shallow depth of field, so the outer branches soften into blur. The cell is a luminous, warm ivory-white with a few small electric green (#00e676) points of light along its branches. Behind it is a saturated, even magenta backdrop with subtle tissue grain. Lighting is crisp and backlit, with gentle glow around the edges and no harsh shadows. The mood is curious and precise, with a quiet sense of renewal. No text or labels.

longevity

小鼠研究：NR 让老年脑细胞更显年轻

BY NOVA CHEN · 2026年10月31日

最新发表在《GeroScience》上的研究显示，接受 8 周尼古丁酰胺核苷（NR）补充的 22 个月大雌雄小鼠在记忆和筑巢测试中表现更佳，且大脑中的免疫细胞呈现出更接近年轻小鼠的状态。值得注意的是，这仅是小鼠实验，剂量（400 mg/kg）远高于人体常用剂量，且研究仅报告了雄性小鼠的结果。本文将重点解析微胶质细胞的变化、研究的局限以及对 NR 使用者的启示。