**3.1 Effect of diet on children's growth and development**

In the early stages of a child's development, more energy and nutrition are required as the child's metabolic rate is much low during this period. n-3 and n-6 PUFAs and trace minerals, such as iron, zinc, and iodine can affect the sensory functions of the child's body [17]. However, developmental probiotic-based functional food can play a key role in the growth and development of the child mental and physical health. Moreover, more consumption of oligosaccharides and insulin via functional food can significantly normalize the gastrointestinal health of the pediatrics in the early years of their development [18].

#### **3.2 Nourishment impact on immunity**

A balanced nutritious diet can positively affect the immune system of the host throughout their life span, nutritional components such as antioxidants, vitamins, trace elements copper zinc calcium and potassium functions boost growth and development and give strength to the immune system of immune-compromised patients [19].
