Pure City Research - Pure City Research

Astaxanthin: Independent Evidence on Skin, UV & ‘Internal Sunscreen’ Claims

July 4, 2026July 4, 2026 by Pure City Research

Internal sunscreen? Skin moisture yes, lipid claims weak. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Dissolves microclots? Modest BP effect, bleeding risk. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

PCOS metabolic and ovulatory benefit — guideline-endorsed. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Skin brightening from within? Oral weak, IV unsafe. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Liquid gold for immunity? Athlete URTI data, beauty claims thin. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Nature’s Ozempic? LDL and glucose yes — weight loss, weak. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Natural testosterone booster? What human trials actually show. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Pea/soy/rice/hemp — parity with whey when dose and leucine are matched. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

Single-cell vegan protein — one manufacturer-funded RCT, weak evidence. Independent human-trial evidence, funding traced, evidence graded.

July 4, 2026July 4, 2026 by Pure City Research

WPC vs WPI vs WPH vs native — MPS dose-response and the leucine trigger. Independent human-trial evidence, funding traced, evidence graded.