Hi Ellen, yes that would make sense. Growing up in India coconut water was recommended if you were sick (high fever). My grandparents indicated that it was whole meal of sorts - It provided the hydration and nourishment that the body needed to fight with the fever. Old wives tale - perhaps but it worked.
Again I ate more coconut than I can remember and still do at times. I soaked my hair in coconut oil
as a child and had thick dark hair. Coconut water is an acquired taste but since I grew up with it we used to love to buy coconuts whenever we were at the beach and drink the water and eat the soft flesh.
I was recently in Hawaii and the best part was that I got to savor fresh coconut water and cream. My kids on the other hand did not care for it much. So besides health considerations there is a taste consideration and it's not for everyone for sure.