Question

how is sunlight beneficial to our health

Answer 1

As you know sunlight has some bad effects on our health like skin disease
but it also provide vitamin D which are healthy for bones

Answer 2

It gives us an important vitamin and that is vitamin D. Sunlight is important for plants for making food and carry out the process of photosynthesis. so we are indirectly dependent to sun through plants. nature keeps balance in all things and plant is one of the important thing for humans as well as animals plants are dependent on sunlight and we are dependent on them for food.