Capsaicin health benefits have been associated with many cures that include lowering blood pressure, reducing cholesterol and warding off strokes and heart attacks, speeding up metabolism, treating colds and fevers, preventing cancer and pain control. Capsaicin is a flavorless, odorless chemical concentrated in the veins of chiles and peppers.
The seeds grow next to the veins and absorb the chemical. Contrary to popular belief, the seeds are not the hottest part of chile. Rather, the greatest heat is found in the capsaicin oil, which is found in the membranes and near the stems of chiles plants. Removing the seeds and especially the veins can reduce the heat by up to fifty percent. Otherwise, capsaicin is virtually indestructible and can withstand freezing, cooking and time.
Experts believe that capsaicin acts on and desensitizes nerve fibers that carry pain signals throughout the nervous system. Repeated and high doses of capsaicin prevent sensory nerves from replenishing their chemical stores and they basically run out of neurotransmitters (the chemical agents that transmit the message of pain to a nerve or muscle).