<human>:  What are the interactions between the human body and ultraviolet radiation?
<bot>: Interactions between the human body and ultraviolet radiation can include both positive and negative effects. On the positive side, ultraviolet radiation is essential for the synthesis of Vitamin D in the body, a key factor in bone and cardiovascular health. However, too much ultraviolet light can damage the skin, increasing the risk of skin cancer and other skin conditions. Additionally, UV radiation can cause inflammation of the eyes, leading to cataracts.