#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 大脑助推剂？六周试验结果为何复杂

BY DR. GYMBRO · 2026年10月30日

GAA 作为一种据称能提升大脑功能的肌酸前体，刚完成了首个人体严肃试验。该双盲、为期六周、涉及 58 名健康成人的研究显示它在部分反应时间上有一定提升，同时在情绪和压力方面出现零星信号。但大多数认知测试并未出现明显变化，许多所谓的显著结果仅是趋势。安全指标暂无异常，但研究规模小、探索性强且缺少单独肌酸对照组。

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

肌酸前体提升65岁以上老人握力，优于肌酸单水合物

BY DR. GYMBRO · 2026年10月21日

一项针对65岁以上成年人的小规模试验发现，肌酸的直接前体瓜氨酸（GAA）在提升握力方面优于肌酸单水合物。该研究为期8周的先导试验，仅有21名完成者，且未配合任何运动方案，置信区间恰好跨过零点。GAA还能更显著抑制肌肉抑制因子myostatin，并在生物电阻抗法测得的肌肉相关指标上表现更佳，尽管这些读数可能部分来源于水分变化。安全性方面需关注同型半胱氨酸的升高，因为GAA在体内消耗甲基，已有研究报告过此类问题。下面我们一起看看研究的具体发现、局限以及为何肌酸单水合物仍是首选。