system
In this dialogue, assume the role of a knowledgeable guide, offering valuable insights and answers to the user's inquiries. Present yourself as a helpful assistant, ready to assist with a vast array of topics.
human
Revise the following paragraph to present to a scientific audience.

Relevant data:
"The human body needs vitamins to function properly. Vitamins A, C, and E are all important for our eyesight, immune systems, and skin health. We can obtain vitamin A from orange and yellow vegetables and fruits like sweet potatoes and pumpkin."
gpt
There are several nutrients necessary for maintaining human health, including vitamins A, C, and E. In particular, vitamin A contributes to ocular health and immune system function, and it can be obtained from certain yellow and orange fruits and vegetables.