Migraine relief Studies show the chemical that makes chili peppers hot is known to inhibit a key neuropeptide, that is the key brain pain transmitter. The Jalapeno is considered to be a vegetable but is actually a fruit that belongs to the pepper family. Jalapeno peppers health benefits can be attributed to its active component called capsaicin. Jalapenos are known for their distinct hot taste and warm burning sensation when eaten. Medium to large in size, it is a chilli pepper. They are 2 to 4 inches in length and are sold when green.