What is hypervitaminoses and avitaminoses?

Explanation

### Step-by-Step Solution:

1. **Definition of Hypervitaminosis**:
- Hypervitaminosis refers to a condition that results from the excessive intake of vitamins, particularly fat-soluble vitamins like Vitamin A and Vitamin D. When these vitamins are consumed in large amounts, they can accumulate in the body and lead to toxic effects.

2. **Causes of Hypervitaminosis**:
- The primary cause of hypervitaminosis is the overconsumption of vitamin supplements or foods rich in specific vitamins. For example, consuming too many carrots (rich in Vitamin A) or excessive sun exposure (for Vitamin D) can lead to this condition.

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