Alzhimer disease in humans is associated with the deficiency of

Options

A. Gamma aminobutyric acid (GABA)
B. Dopamine
C. Glutamic acid
D. Acetylcholine

Answer

To solve the question regarding the deficiency associated with Alzheimer's disease in humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Alzheimer's Disease**:
- Alzheimer's disease is a neurodegenerative disorder characterized by progressive memory loss and cognitive decline.

2. **Identifying Neurotransmitters**:
- The question mentions several neurotransmitters: gamma-aminobutyric acid (GABA), dopamine, glutamic acid, and acetylcholine.

3. **Role of Acetylcholine**:
- Acetylcholine (ACh) is a neurotransmitter that plays a crucial role in learning and memory. It is involved in transmitting signals in the brain and is essential for cognitive functions.

4. **Research Findings**:
- Studies have shown that individuals with Alzheimer's disease often exhibit a significant decrease in acetylcholine levels. This deficiency is linked to the symptoms of memory loss and cognitive impairment seen in patients.

5. **Conclusion**:
- Based on the understanding of Alzheimer's disease and the role of neurotransmitters, we conclude that the deficiency associated with Alzheimer's disease is primarily due to a lack of acetylcholine.

### Final Answer:
Alzheimer's disease in humans is associated with the deficiency of **acetylcholine**.

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