Which condition is associated with a lack of acetylcholine?

The condition associated with a lack of acetylcholine is Alzheimer's disease. Acetylcholine is a neurotransmitter that plays a critical role in various functions, including memory and learning. In Alzheimer's disease, there is a significant loss of acetylcholine-producing neurons in the brain, particularly in areas associated with memory and cognitive function. This deficiency contributes to the memory loss and cognitive decline that are hallmark symptoms of the disease.

In contrast, while Parkinson's disease involves dopamine deficiency, schizophrenia is linked more to dopamine dysregulation rather than acetylcholine deficiency. Anxiety disorders do not primarily correlate with acetylcholine levels either but are more often influenced by imbalances in neurotransmitters like serotonin and norepinephrine. Thus, recognizing the specific role of acetylcholine in Alzheimer's disease highlights its critical importance in cognitive processes and illustrates why the condition is strongly associated with this neurotransmitter deficit.