the.com/irritability
the body's smoke alarm going off because you forgot to eat lunch
means the tendency to become annoyed, impatient, or angry easily, often over small things, especially when tired, hungry, or stressed.
from From Latin 'irritare,' to provoke or excite, which gave us 'irritate.' By the 18th century, scientists used 'irritability' as a technical term for the capacity of living tissue—muscles, nerves—to respond to a stimulus; physiologists prized it as a sign of life itself. The everyday sense, meaning quick-tempered touchiness, grew from that same root: a body or mood primed to react sharply to the slightest poke.
- hunger link
- Low blood sugar triggers cortisol, sharpening every annoyance
- sleep debt
- One bad night spikes emotional reactivity by 60 percent
- cell biology
- Even single-celled organisms react irritably to stimuli
- thyroid tell
- Sudden short fuse can signal overactive thyroid
- contagious
- Irritable moods spread through groups like yawns