The Research Journal

April 17, 2026

Best Peptides for Cognitive Performance and Focus

Semax, Selank, PE-22-28, and DSIP are studied for BDNF expression, anxiolytic effects, and cognitive signaling. A review of the nootropic peptide data.

April 16, 2026

Best Peptides for Gut Health

BPC-157 and KPV are the two most researched peptides for gastrointestinal repair. What the animal and in vitro data supports and where it falls short.

April 15, 2026

Best Peptides for Immune Support

April 14, 2026

Best Peptides for Sleep

DSIP, CJC-1295, and Epitalon have been studied for their effects on sleep architecture and circadian regulation. Here is what the data shows.

April 13, 2026

Best Peptides for Skin Health

Copper peptides, palmitoyl pentapeptides, and melanogenic peptides influence collagen synthesis and skin structure. This article examines mechanisms and current evidence scope.

April 10, 2026

Best Peptides for Hair Growth

GHK-Cu, thymosin beta-4, and PTD-DBM target follicle stem cells and dermal signaling. This article examines published evidence on mechanisms and current data limitations.

April 9, 2026

Best Peptides for Injury Recovery

Research examines how BPC-157, TB-500, and GHK-Cu influence tissue repair pathways in animal models. This review covers mechanisms and current evidence limitations.

April 8, 2026

Best Peptides for Anti-Aging and Longevity

Aging research identifies several peptides with published data supporting cellular and systemic longevity mechanisms. This review examines Epitalon, GHK-Cu, NAD+ compounds, SS-31, MOTS-c, and Thymalin in the context of aging biology.

April 7, 2026

Best Peptides for Fat Loss: Published Research and Mechanisms

Research identifies several peptides that influence fat metabolism through distinct mechanisms. This review covers growth hormone secretagogues, MOTS-c, 5-Amino-1MQ, AOD-9604, Retatrutide, and other compounds studied in fat metabolism research.

April 6, 2026

Best Peptides for Muscle Growth: What the Research Supports

Research literature identifies several peptides studied for muscle growth mechanisms. This review examines the published evidence on growth hormone secretagogues, IGF-1 variants, and myostatin inhibitors in scientific models.

April 3, 2026

What Are Peptide Stacks and Why Do People Combine Them?

Peptide stacks combine multiple peptides that target complementary receptors and signaling pathways. This guide explains the rationale for peptide combinations in research settings.

April 2, 2026

The Most Popular Peptides Right Now and What Each One Does

The most popular peptides in research include BPC-157, TB-500, CJC-1295, and others. This guide covers what each peptide targets, how it works, and what published research has found.

April 1, 2026

How Peptides Work in the Body

Peptides are short chains of amino acids that signal cells through receptor binding. This guide explains peptide mechanism at the molecular level and why structure determines function.

March 31, 2026

What Forms Do Peptides Come In and How Are They Used

Research peptides exist in multiple forms: lyophilized powder in vials, nasal spray formulations, oral capsules, and topical creams. Each form has distinct stability profiles and is suited for different research applications.

March 30, 2026

A Beginner's Guide to Research Peptides

A foundational overview for those new to peptides. Covers definitions, classification systems, common forms, vendor evaluation, label reading, and the research-only framework that governs these products.

March 29, 2026

Are Peptides Safe? What the Research Actually Says

Safety profiles vary by compound and source. Research shows peptide side effects are compound-specific, with published studies reporting adverse events tied to purity, contamination, and third-party testing.

March 28, 2026

Peptides vs. Supplements: Why They Are Not the Same Thing

Peptides are not dietary supplements. Knowledge of the structural, regulatory, and manufacturing differences between peptides and over-the-counter products is essential for informed purchasing decisions.

March 25, 2026

Peptides vs. SARMs: What Separates Them

SARMs and peptides operate through distinct biological pathways and carry different regulatory status. This article explains the fundamental separations between these research compounds.

March 24, 2026

Peptides vs. Steroids: How They Differ & Why It Matters

Peptides and steroids differ fundamentally in structure, mechanism, and regulation. Knowledge of these differences is essential for anyone researching these compounds in laboratory settings.

March 23, 2026

What Are Peptides and Why Is Everyone Talking About Them?

Peptides are short amino acid chains that bind to specific receptors and trigger targeted biological responses. This article covers what they are, how they work, what categories of research peptides exist, and why interest in them has grown so rapidly.