I think there's probably a physical benefit from being loved (or, in your words, for the body to need love). To be unloved is to risk a negative mind set which may well produce all kinds of psychosomatic illness.
I read an article by a doctor who said that she regularly visited an old lady who lived in isolation. She always hugged her before she left. One day the woman said, "I so look forward to your visits, Doctor. You're the only person who still touches me."
Yeah, it's important, especially for older people who may well have outlived their family and friends. But for them, even the love of a dog or cat can help.
I believe there have been studies done that show the human mind and body craves contact both physical and emotional to stay healthy. Something about it releasing adrenaline which in turn makes you "feel" happiness and security. When you are emotionally sated, your body is healthier. When you are unhappy and stressed, your body begins to break down.
yes.It's the same thing with babies when they cry,most of the times they don't need to be changed or fed but cry because their little bodies need their mums touch.They need to be reminded that all is ok,they need to hear the soothing voice and be hugged and most of the times that's all it takes.So why shouldn't we that love as adults?