A handshake might seem to be a simple, even thoughtless social exchange. But behind the meeting of hands are a lot of neural firings, tactile feedback, control of muscles, depth perception; it's a ritual that grows out of a long tradition of greetings and social cues.
Yemenite Jews in Israel live longer and healthier lives than other Israelis. Over the years, many researchers have attributed the Yemenite's good health to the simplicity of their cooking and their use of herbs and spices. Fenugreek, for example, a staple spice in our kitchens, has shown promise in research to treat diabetes and high cholesterol.