Leading Neuroscientist: Stress Leaks Through Skin, Is Contagious, Gives You Belly Fat! Dr Tara Swart

TL;DR

Stress is contagious via cortisol leaking from sweat, affecting others within about a foot and causing hard‑to‑shift abdominal fat as a survival mechanism. The brain remains plastic past age 25 if challenged intensely, and habits can be rewired through awareness, focused attention, deliberate practice, and accountability.

Key insights

• Cortisol leaks from sweat about a foot around a person and enters the skin of others, physiologically impacting them regardless of whether the stressed person tries to hide it.
• As a survival mechanism, cortisol causes fat storage around the abdomen, which is difficult to shift without reducing the root cause (cortisol levels).
• In a hierarchy, a leader’s stress has a disproportionately large impact on subordinates; a stressed leader can cause weight gain in others through cortisol contagion.