A closer look at
the science of aging.

Skin & aesthetics

Why Less Facial Fat Is Not Always Better: When Lifting Leaves a Face Looking More Tired

Facial fat provides more than volume. Dr. Choi explores dWAT, the signals between fat cells and fibroblasts, and why preserving support matters in rejuvenation.

Skin & aesthetics

Why Can Eyes Feel Heavy—or Brows Arch Too High—After Forehead Botox?

Brow ptosis, eyelid ptosis, and a Spock brow have different explanations. Dr. Choi examines muscle balance and the importance of preserving natural expression.

Skin & aesthetics

Skin Glycation: Why Cutting Back on Sugar Matters

What sugar does to collagen, what studies of skin yellowing really show, and how diet, everyday skin care, and aesthetic treatments address different goals.

NMN Raised NAD⁺ 3.6-Fold in 24 Weeks. Did It Really Make People Younger?

A 24-week NMN trial raised blood NAD⁺ substantially without clear gains in hearing or physical function. Dr. Choi examines what the results mean for aging.