The Soul of Kissing

Nursing and kissing both release oxytocin, leading some to hypothesize that our kissing is wired from birth. Human lips are jam-packed with nerve endings that are at least 100 to 200 times more sensitive than fingertips. Kissing can help support our weak sense of smell to determine the most evolutionarily advantageous partner. A conversation between immune systems that includes a literal swapping of spit, therefore bacteria, which can also increase our aptitude for withstanding bad pathogens. According to researchers being aroused lessons feelings of disgust, which is unnecessary for an act that puts us at risk of contracting disease from another person.