#cognitive aging

1 article

**Approach: Conceptual metaphor. Palette: Bold color field (saturated orange).**

A single halved orange sits on a seamless saturated tangerine-orange backdrop, shot from a low three-quarter angle with a macro lens. The flesh is shrunken and dried on one side, with the juice vesicles collapsed and pulled back from the rind. The other half is plump and glistening. The shrunken side leaves a visible gap inside the peel, which suggests lost brain volume. Hard, directional studio light from the upper left throws a crisp, warm-neutral shadow across the backdrop. Tiny droplets of juice catch the highlights. A thin electric green leaf stem rests beside the fruit as a small accent. The mood is vivid and clean, with a quiet tension between fullness and depletion. There is no text and no blue cast.

Niska razina vitamina C u krvi povezana s manjim volumenom mozga kod starijih osoba

BY DR. SYNAPSE · 19. lis 2026.

Studija na 2 044 starija Japanca otkrila je da je niža razina vitamina C u plazmi neovisno povezana s manjom gustoćom sive tvari u odnosu na veličinu glave i slabijom povezanošću zadane mreže (default mode network) na 3 T MRI‑ju. Asocijacije su ostale značajne i nakon kontrole za dob, dijabetes, krvni tlak, pušenje, konzumaciju alkohola i tjelesnu aktivnost. Međutim, dizajn je poprečni i promatrački, pa ne može dokazati da suplementi vitamina C sprječavaju smanjenje volumena mozga. U nastavku objašnjavamo što rezultati znače, tko je najugroženiji i kako postići zdravu razinu vitamina C kroz prehranu i razborito suplementiranje.