OrganBarrier

Skin Health

Your visible health indicator. The skin is the largest organ, weighing about 8 pounds and covering 20 square feet. It's a barrier against pathogens, regulates temperature, synthesizes vitamin D, and houses immune cells. Skin problems often reflect internal imbalances—the gut-skin axis is real.

Skin structure and functions
20 ft²
Surface Area
8 lbs
Weight
3 Layers
Epidermis, Dermis, Hypodermis
28 Days
Cell Turnover

What Skin Does

Barrier Protection

Keeps pathogens out, moisture in. Acid mantle discourages bacteria. First line of defense.

Vitamin D Synthesis

UVB converts cholesterol to vitamin D3. Best source when done safely. Varies by skin tone.

Temperature Regulation

Sweating cools. Vasoconstriction conserves heat. Essential for thermoregulation.

Immune Surveillance

Langerhans cells detect pathogens. Trigger immune response. Skin is immune organ.

Sensation

Touch, pressure, pain, temperature receptors. Millions of nerve endings. Vital feedback.

Excretion

Sweat removes some toxins, salts, urea. Minor detox pathway but still relevant.

The Gut-Skin Axis

What happens in the gut shows on the skin. This connection explains many skin conditions:

Healthy Gut
Balanced microbiome, intact barrier, low inflammation
→ Clear, calm skin
Dysbiotic Gut
Imbalanced bacteria, leaky gut, systemic inflammation
→ Acne, eczema, psoriasis, rosacea

Common Skin Conditions

Acne

Hormones (androgens), bacteria, sebum, inflammation. Gut dysbiosis often involved.

Eczema

Barrier dysfunction + immune dysregulation. Food sensitivities, histamine, stress triggers.

Psoriasis

Autoimmune. Rapid skin cell turnover. Gut-immune connection. Systemic inflammation.

Rosacea

Facial redness, blood vessels. SIBO connection. Demodex mites. Triggers vary.

Hives

Histamine release → welts. Allergies, mast cell activation, stress, infections.

Aging

Collagen decline, oxidative damage, glycation. Sun exposure major factor.

Skin Health Discussion