Skin, Hair & Beauty Nutrition

What Genuinely Helps — and What the Beauty Industry Oversells

Skin, Hair & Beauty Nutrition is Book I8 of The Performance & Human Physiology Encyclopedia — a 93-volume, university-level library on food as medicine, applied honestly to a specific condition. It is written for dietitians, health professionals, patients and preventive-minded readers: deep enough that a professional already trained in the field keeps learning, structured clearly enough that a motivated reader can follow every step.

What you will find inside

• Beauty from the Inside: What Nutrition Can (and Can't) Do
• Skin & Hair Biology (Refresher)
• How to Judge a Beauty Claim
• The Real Foundations: Diet Pattern, Protein & Hydration
• Sun, Smoking & Lifestyle: The Biggest Levers
• Collagen: Hype, Evidence & Reality
• Vitamins, Minerals & Antioxidants for Skin/Hair
• Diet & Skin Conditions: Acne, Eczema, Aging
• Hair: Growth, Loss & Nutrition
• The Beauty Supplement Industry: Help, Hype & Harm
• Topical vs Oral & "Detox for Skin" Myths
• Across the Lifespan & When It's Medical (N4)
• Putting It Into Practice: An Evidence-Based Beauty-Nutrition Blueprint

How this book is written

• University level, without dilution. Exact scientific terminology, defined at first use — mechanisms, not just conclusions.
• Evidence graded, not asserted. Major claims carry a level, from A (strong) to D (expert opinion), so you always know how much weight to give them.
• Numbers, formulas, worked examples. Reference ranges, equations and solved calculations you can apply the same day.
• Myths confronted directly. Where a popular claim does not survive the evidence, the book says so — and shows why.
• Fully referenced (APA 7). References at the end of every chapter, plus a master bibliography.

13 chapters · approx. 96 pages · Book I8, Collection I — Clinical Nutrition & Preventive Health.