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4 articles
Approach: macro science. Palette: warm (amber and copper). Extreme close-up of a freshly sliced king oyster mushroom stem and gill edge, shot at a slight 30-degree overhead angle with a macro lens and shallow depth of field. The pale cream flesh shows individual fibrous hyphae and glistening moisture beads. Warm low-angle golden light rakes across from the left, turning the gill ridges into amber and copper lines with deep honey-brown shadows. A single tiny droplet on the cut surface catches a pinpoint of electric green reflection, as if lit from a hidden source. Background melts into out-of-focus burnished orange and chocolate tones. The mood is quiet, intimate and investigative, with real organic texture and no text.
longevity

Gljiva „vitamin dugovječnosti“ podiže NAD+ kod starijih štakava putem H₂S‑prekidača

BY HELIX WARD ·

Ergothioneine, gljivični spoj popularno nazvan „vitamin dugovječnosti“, dobio je mehanizam koji opravdava tu reputaciju. U studiji objavljenoj u *Cell Metabolism* starim štakavcima koji su primali ET omogućeno je duže trčanje na traci, povećala se vaskularizacija i mišićna masa te su zabilježeni viši nivoi mišićnog NAD+. Učinak je povezan s putanjom vodikovog sulfida – CSE, persulfidacijom i enzimom cGPDH. Kada se CSE ili cGPDH onemoguće, učinak nestaje. Radi se o eksperimentima na životinjama i u laboratoriju, a doziranje za štakave prevodi se otprilike na deset puta veću dozu od one koju tipični suplementi daju ljudima.
Approach: conceptual metaphor. Palette: bold color field. A single AA-style cylindrical battery, shown as a real object with a bare metal cap and a plain unlabeled matte sleeve, stands upright on a glossy surface. It is photographed from a low three-quarter angle against a saturated tomato-red seamless backdrop. The battery is half-filled with a translucent amber liquid that visibly rises inside a clear glass cutaway section. A thin ribbon of electric green light (#00e676) wraps around its base like a charging band. Soft large-softbox light comes from the upper left and produces crisp highlights on the metal and a clean, slightly blurred red reflection beneath it. A second, shorter battery sits out of focus behind, nearly drained and empty, to suggest contrast. The mood is energetic, optimistic and precise, with a tactile product-photography look and shallow depth of field.
supplements

NR + pterostilben podiže NAD+ za ~40–90 % u ljudskom ispitivanju

BY NOVA CHEN ·

Može li dnevna kapsula nikotinamid‑ribozida i pterostilbena podići razinu NAD+ kod starijih osoba? U prvom ispitivanju u ljudima (NRPT, poznat pod imenom Basis) u kojem je sudjelovalo 120 osoba između 60 i 80 godina, dodatak je uziman osam tjedana. Razina NAD+ u krvi porasla je otprilike 40 % pri preporučenoj dozi i 90 % pri dvostrukoj, a povećanje je ostalo stabilno tijekom cijele studije. Nije zabilježena nijedna ozbiljna nuspojava. Evo što nam brojevi govore, koje su ključne pouke o doziranju i što ovaj rad ne može zaključiti.
A bright, minimalist editorial still life on a pale warm-white stone surface, shot from a slightly elevated three-quarter angle in soft natural window light. At center, a small amber glass supplement bottle with a matte cream label, unbranded, sits beside a few loose white capsules. A pair of weathered hands in a light oatmeal linen sleeve, belonging to an older adult, rests gently near the bottle, with a ceramic mug of tea just out of focus. To the right, a clean glass vial and a delicate glass beaker filled with clear liquid catch the light, hinting at laboratory research without any futuristic touch. A small paper notebook with a handwritten simple line graph rising in a gentle curve lies open nearby, along with a sharpened pencil. Scattered at the edges are soft sprigs of dried eucalyptus and a few pale sage-green leaves, adding an organic note. A faint, abstract molecular diagram printed in muted teal ink on a card leans against the bottle, subtle and graphic. The palette is calm and modern: warm ivory, sage green, soft teal, muted amber, and touches of dusty peach. Long, gentle shadows fall across the surface, and the shallow depth of field blurs the background into creamy neutral tones. The composition leaves generous negative space on the left third for headline text. The overall feel is a trendy health and science journal: clean, airy, trustworthy, and quietly sophisticated, with fine film-like grain and true-to-life color. Ultra-detailed, 16:9 landscape.
supplements

1.000 mg nikotinamid‑ribozida dnevno podiglo NAD⁺ u krvnim stanicama za oko 60 % kod starijih odraslih osoba, prema randomiziranom istraživanju

BY DR. SYNAPSE ·

Kros‑over studija iz 2018. godine objavljena u *Nature Communications* testirala je dozu od 500 mg nikotinamid‑ribozida dva puta dnevno (ukupno 1 000 mg/dan) tijekom šest tjedana na zdravim sredovječnim i starijim osobama. Suplement je bio dobro podnošljiv i povećao je NAD⁺ u imunološkim krvnim stanicama za otprilike 60 % u odnosu na placebo. Istraživači su također zabilježili prve naznake smanjenog krvnog tlaka i arterijske krutosti, no to su samo hipoteze za buduća ispitivanja, a ne dokazane koristi. Članak objašnjava zašto se smatra da NAD⁺ opada s godinama, što je studija pokazala i što nam ne može reći o ishodima bolesti ili dugovječnosti.
A softly lit editorial still life on a pale oat-colored linen surface, shot from a slightly elevated three-quarter angle in a wide landscape frame. At center-left, a small matte white ceramic dish holds a modest pile of fine off-white powder, with a tiny brushed-brass measuring spoon resting beside it. Next to the dish stands a minimalist amber glass supplement bottle with a plain cream label and no readable text. A few capsules spill casually across the linen, some translucent and some opaque ivory. On the right side of the composition, a ripe blood orange cut in half and a handful of raw almonds sit on a light ash-wood board. A sprig of fresh rosemary adds a muted green accent. A sheer glass of water catches the light and throws a soft, rippled caustic pattern across the fabric. In the background, out of focus, a woman's hand in a soft sage-green knit sleeve rests near a ceramic mug. This suggests a calm morning routine without showing a face. Behind her, a tall window casts diffused, golden-hour light from the upper left, with gentle shadows and a creamy, shallow depth of field. The palette is warm and restrained: oat, ivory, terracotta, sage, and amber, with a single pop of coral from the blood orange. A thin, abstract line of muted terracotta paint, like a brushed arc, sweeps across the upper right background. It subtly evokes a rising curve without becoming a literal chart. The mood is calm, trustworthy, and contemporary, like a premium wellness and science journal feature. The image has crisp focus on the powder and bottle, natural film-like grain, soft contrast, and generous negative space in the upper third for headline overlay. It looks like a high-end editorial photograph with no text, logos, or futuristic elements.
metabolism

Prvi ljudski uspjeh NMN‑a: 250 mg dnevno povećalo osjetljivost mišića na inzulin za oko 25 % kod predijabetičkih žena

BY DR. SYNAPSE ·

NMN je dugo bio zvijezda trenda za dugovječnost, ali dokazi na ljudima bili su oskudni sve dok nije objavljena studija Washington Universityja u časopisu *Science* 2021. godine. Kod žena u postmenopauzi s predijabetesom i prekomjernom tjelesnom težinom ili pretilošću, 250 mg NMN‑a dnevno tijekom 10 tjedana poboljšalo je osjetljivost mišića na inzulin za otprilike 25 %. Signali inzulina u mišiću i geni povezani s remodeliranjem mišića također su se poboljšali, dok u grupi s placebom ništa nije promijenjeno. Međutim, korist je bila ograničena i studija nije pokazala da NMN snižava razinu šećera u krvi ili preokreće predijabetes. Evo što je studija otkrila, na koga se odnosi i što nije promijenila.

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