Not only eating and drinking, but all bodily pleasures, are prohibited on Yom Kippur. The Sages have listed five such afflictions: We are to abstain from eating, drinking, washing or anointing the body, wearing leather shoes, and marital relations.
These five afflictions correspond to the Five Books of the Torah which we accept without allowing our physical needs to intervene. They also correspond to the five senses with which man performs mitzvot and commits transgressions; to the five times the term nefesh [soul] is mentioned in the Yom Kippur Torah reading; to the five immersions of the Kohen Gadol on Yom Kippur when the Sanctuary stood; and to the five prayer services prescribed for the day: Ma'ariv, Shacharit, Musaf, Minchah, and Ne'ilah.
I resent that judaism doesn’t care for the body
Actually the fact that the Torah tells us to afflict our body only one day a year - says about how much Judaism cares about our bodies. We supposed to get married, with all the joys and pleasures inherent therein. On the holiest day of the week - Shabbat we are obligated to enjoy delicious meals and wear our finest clothes and do other pleasurable activities -this indicates how special our bodies are. This holds true even more so for all the Holidays on the Jewish calendar - to an even greater extent than Shabbat. Thus we have a mandate from the Torah to not just care for our bodies (this is also the reason that if there s any danger, one must eat on Yom Kippur see this link for more about this) but to enjoy the body G-d gave us.