#guanidinoacetic acid

2 articles

A wide, editorial-style still life photographed from slightly above on a pale oat-colored linen surface, lit by soft morning window light from the left. In the center sits a small matte ceramic bowl holding a mound of fine white powder, with a minimalist wooden scoop resting beside it. Next to the bowl is an open amber glass supplement jar with a plain cream label, and a few white capsules spill across the linen in a loose arc.

To the right, a neatly arranged cluster of analog "study" objects suggests careful measurement: a vintage stopwatch with a clean white face, a slim notebook with a sage-green cover open to a hand-drawn bar chart (blurred, no legible text), and a mechanical pencil lying across the page. A small row of six identical ceramic dishes, each holding a pinch of powder, is lined up along the top edge of the frame to hint at the six-week trial. One dish is slightly out of alignment, a subtle visual cue for ambiguity.

A shallow glass of water and a single sprig of green eucalyptus add a calm, organic note in the foreground. Soft, long shadows fall across the textured linen, and the palette stays restrained: warm cream, soft sage, muted terracotta, pale gray, and touches of amber from the glass jar. A few translucent paper cutouts in two tones (sage and blush) overlap in the upper right corner as a modern graphic accent, evoking overlapping data points without showing any numbers.

Depth of field is shallow, with the bowl and stopwatch in crisp focus and the edges gently softened. The composition leaves generous negative space on the left third for title text overlay. The overall mood is thoughtful, balanced, and quietly skeptical, in the style of a contemporary wellness and science magazine: clean, tactile, minimal, with a subtle film-like grain and natural color grading. No people, no futuristic or sci-fi elements, no readable text or logos.

GAA – pojačivač mozga? Rezultati šestotjednog ispitivanja komplicirani

BY DR. GYMBRO · 30. lis 2026.

GAA, preteče kreatina koji se prodaje kao pojačivač mozga, doživio je prvi ozbiljan ljudski test. U dvosedmijesečnom, dvostruko‑slijeplom ispitivanju na 58 zdravih odraslih primijećene su blage promjene u brzini reakcije i raspoloženju, dok većina kognitivnih testova nije pokazala učinke. Sigurnosni podaci izgledaju u redu, ali studija je mala, istraživačka i nema usporedbu s čistim kreatinom.

A landscape editorial photograph of a sunlit kitchen table in soft morning light. An older adult's hands, with silver hair and a cream knit sleeve just visible, rest around a ceramic mug. Beside the mug are two small matte white ceramic dishes. One holds a mound of fine white powder, and the other holds a slightly different crystalline white powder. Two wooden spoons lie next to them. A handheld hand-grip dynamometer in muted sage green sits on a linen placemat in the foreground, slightly out of focus. A small open notebook with a pencil and a pair of round tortoiseshell reading glasses sit nearby, with no legible text.

The tabletop is pale oak with a visible grain. Behind it, a window with sheer curtains lets in warm golden light, and the blurred shapes of a trailing green pothos plant and a pale terracotta vase show in the background. The color palette is warm cream, sage green, soft terracotta, and pale wood, with a touch of muted navy from a folded napkin. The mood is calm, thoughtful, and quietly scientific without any laboratory feel.

The composition follows the rule of thirds. The hands and dishes sit in the left-center, and generous negative space on the right is suitable for a title overlay. Shallow depth of field, 50mm lens look, gentle film grain, and soft shadows. Modern lifestyle-magazine and health-journal aesthetic, natural and unstaged, high-end editorial photography.

nutrition

Prekursor kreatina nadmašio kreatin u snazi stiska kod osoba starijih od 65 godina

BY DR. GYMBRO · 21. lis 2026.

U malom ispitivanju na osobama starijim od 65 godina otkriveno je da guanidinoacetična kiselina (GAA), izravni prekursor kreatina, poboljšava snagu stiska više nego kreatin monohidrat. Problem je što je radi se o pilot studiji od 8 tjedna s tek 21 dovršenim sudionicima, bez programa vježbanja i s intervalom pouzdanosti koji jedva prelazi nulu. GAA je također pokazala veće potiskivanje miostatina i poboljšanje mišićnih parametara mjerenih BIA‑om, iako ti podaci mogu djelomično odražavati hidrataciju. Homocistein predstavlja sigurnosno pitanje jer GAA troši metilne skupine i u drugim studijama je podigla njegovu razinu. Ovdje su rezultati studije, ono što ne možemo zaključiti i zašto je kreatin monohidrat i dalje provjereni izbor.