ATIKA Journal — The Science of Skin Longevity

Collagen & Hormones: Estrogen, Cortisol, Thyroid, Androgens

A clinical explanation of how estrogen, cortisol, thyroid hormones, and androgens influence collagen, dermal thickness, and skin structure—and where foundational skin nutrition fits.

Collagen Myths: What the Science Actually Shows

A clear, evidence-based breakdown of common collagen myths and what studies actually show about dose, timelines, internal vs topical support, cofactors, and foundational skin nutrition.

Collagen & Menopause: Perimenopause vs Menopause Deep Dive

A clinical explanation of how collagen changes across perimenopause and menopause, how estrogen decline affects dermal structure, and where foundational skin nutrition supports skin longevity.

Collagen Peptides vs Gelatin vs Whole Collagen: What Each Means for Skin

A clinical comparison of collagen peptides, gelatin, and whole collagen — how they differ in structure, absorption, and evidence, and what actually matters for skin.

What Is Collagen? A Plain-Language Guide for Skin

A clear, evidence-based explanation of what collagen is, where it sits in the skin, how its structure changes with age and UV exposure, and why type I and III collagen matter most for visible firmn...

How Do Internal Skin Nutrition and Topicals Work Together?

Internal skin nutrition and topical skincare work on different layers of the same organ. This article explains how each approach affects key pathways in the skin and how to combine them in a measur...

What Causes Skin Aging at the Cellular Level?

A detailed, research-based explanation of how skin aging begins at the cellular level: fibroblast changes, collagen loss, ceramide decline, and oxidative stress. Includes clinical references and a ...

Marine vs Bovine Collagen: What the Science Actually Shows

A clinical comparison of marine and bovine collagen based on human studies. Learn how peptide composition, bioavailability, quality, and cofactors influence collagen outcomes within foundational sk...