Asthma
A chronic inflammatory airway disease where vitamin C's role in reducing symptoms and severity has shown mixed results in studies.
Videos Mentioning Asthma

UFC Hall of Famer Bas Rutten on Self-Defense, Savage Fight Stories, Breathing Techniques, and More
Tim Ferriss
A respiratory condition characterized by spasms in the bronchi of the lungs, causing difficulty in breathing, which Bas Rutten experienced severely as a child and later resolved with the O2 Trainer.

#144 - Phil Maffetone: Optimizing health and performance through maximal aerobic function
Peter Attia MD
Mentioned as a condition that might require subtracting five points from the 180 formula.

How Placebo Effects Work to Change Our Biology & Psychology
Andrew Huberman
A respiratory condition discussed in a study where placebo treatments reduced discomfort but did not improve breathing patterns, highlighting the specificity of placebo effects.

Vitamin C: Oral vs. Intravenous, Immune Effects, Cancer, Exercise Adaptation & More
FoundMyFitness
A chronic inflammatory airway disease where vitamin C's role in reducing symptoms and severity has shown mixed results in studies.