Body part
Brain
Nervous Organs
The brain — control center for mood, sleep, pain, and cognition.
Common conditions
-
Depression
A common but serious mood disorder causing persistent low mood, loss of interest, and changes in sleep, appetite, energy, and concentration — ranging from mild to severe.
-
Anxiety & stress
Excessive, persistent worry or stress that interferes with daily life.
-
Insomnia
Difficulty falling or staying asleep despite adequate opportunity, with daytime impact.
-
Cognitive decline & memory
Age-related changes in memory, attention, and thinking speed — ranging from normal forgetfulness to mild cognitive impairment and dementia.