**Explanation:**

**Vitamins and minerals** are the nutrients that protect our body from various diseases and keep us fit and healthy. Let us understand why these nutrients are important for our health:

1. **Vitamins:** Vitamins are organic compounds that are required in small quantities for various physiological functions in our body. They are essential for maintaining good health and preventing various diseases. Some of the important vitamins include vitamin A, vitamin C, vitamin D, vitamin E, and vitamin K. Here's how vitamins contribute to our overall health:

- Vitamin A helps in maintaining good vision, promoting healthy skin, and supporting the immune system.
- Vitamin C is important for the growth and repair of tissues, healing wounds, and protecting against infections.
- Vitamin D is necessary for strong bones and teeth as it helps in the absorption of calcium and phosphorus.
- Vitamin E acts as an antioxidant, protecting our cells from damage caused by free radicals.
- Vitamin K is essential for blood clotting, which helps in preventing excessive bleeding.

2. **Minerals:** Minerals are inorganic substances that are required in small amounts for various functions in our body. They play a crucial role in maintaining good health and preventing diseases. Some important minerals include calcium, iron, potassium, magnesium, and zinc. Here's how minerals contribute to our overall health:

- Calcium is essential for strong bones and teeth, proper muscle function, and nerve transmission.
- Iron is necessary for the production of hemoglobin, which carries oxygen to the body's cells. It prevents iron-deficiency anemia.
- Potassium helps in maintaining proper fluid balance, regulating blood pressure, and supporting muscle and nerve function.
- Magnesium is involved in over 300 biochemical reactions in the body, including energy production, muscle function, and DNA synthesis.
- Zinc is important for immune function, wound healing, and proper growth and development.

In conclusion, vitamins and minerals are essential nutrients that protect our body from various diseases and keep us fit and healthy. They support various physiological functions and help maintain overall well-being. It is important to consume a balanced diet that includes a variety of fruits, vegetables, whole grains, lean proteins, and dairy products to ensure an adequate intake of vitamins and minerals.