Supplement Research

Multiple RCTs show creatine improves working memory (effect size g = 0.34 in a 2023 meta-analysis of 10 trials, rising to g = 0.54 in adults over 65). Effects are strongest in vegetarians, older adults, and sleep-deprived individuals — populations with chronically low brain phosphocreatine.

Data from over 1.1 million adults links 6.4–7.8 hours of sleep to the slowest biological aging. We examine five mechanisms — growth hormone release, glymphatic clearance, telomere length, inflammation, and cortisol — and what they mean in practice.

The SELECT trial showed a 20% cardiovascular event reduction. The FLOW trial was stopped early for a 24% kidney failure benefit. GLP-1 agonists also reduce blood pressure, show migraine promise via CGRP modulation, and are being investigated for depression and alcohol use disorder.

Microdosing semaglutide or tirzepatide at sub-therapeutic doses is gaining traction among telehealth providers as a lower-side-effect alternative. We review the evidence base, dose thresholds, and what the studies actually show about efficacy at reduced doses.

Creatine loading saturates muscle phosphocreatine stores in 5–7 days rather than 3–4 weeks. We break down the evidence for loading vs. maintenance-only dosing, optimal timing, and whether HCl offers any real advantage.

The tingling (paresthesia) is a benign cutaneous sensory effect caused by beta-alanine's interaction with peripheral sensory receptors. It doesn't indicate efficacy — the real measure is carnosine accumulation.

Morton et al. (2018) meta-analysis of 49 RCTs found total protein dose — not processing method — determines lean mass gains. WPI wins on lactose (under 1g vs 4–5g per serving) and caloric efficiency. WPC wins on cost (35% cheaper per gram). Evidence-based decision framework for both.

Both can support muscle protein synthesis when leucine thresholds are met. We compare digestibility, amino acid profiles, and real-world study outcomes — not marketing claims.

The 30-minute anabolic window is largely a myth for trained individuals eating adequate total protein. Schoenfeld et al. (2013) showed total daily protein matters far more than precise timing.

Chronic caffeine use downregulates adenosine receptors, blunting ergogenic effects. The evidence suggests a 10–14 day abstinence period fully restores sensitivity in most individuals.

KSM-66 and Sensoril are both standardised ashwagandha extracts but differ in withanolide content and trial protocols. KSM-66 has stronger evidence for testosterone and cortisol endpoints; Sensoril edges it for stress biomarkers.

Vitamin A toxicity from chronic retinol excess, heavy metal accumulation, hemochromatosis risk in iron-overload patients, and purine load in gout — we examine the four primary safety concerns with beef organ supplements and establish evidence-based safe-use guidelines.

Freeze-drying (lyophilisation) operates below 0°C under vacuum, preserving heat-labile vitamins and enzymes at the cost of higher manufacturing expense. Traditional desiccation uses low-heat airflow at 37–40°C. We compare nutrient retention, enzyme survival, and cost implications across both methods.