What is hypervitaminoses and avitaminoses ?

Explanation

### Step-by-Step Text Solution

**Step 1: Define Hypervitaminosis**
Hypervitaminosis is a medical condition that occurs due to the excessive intake of vitamins, particularly fat-soluble vitamins such as Vitamin A and Vitamin D. When these vitamins accumulate in the body beyond the required levels, they can lead to toxic effects.

**Step 2: Causes of Hypervitaminosis**
The primary cause of hypervitaminosis is the overconsumption of vitamin supplements or excessive dietary intake of foods rich in these vitamins. For example, high doses of vitamin A can be found in liver, fish oils, and certain supplements, while vitamin D can be excessively ingested through fortified foods or supplements.

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