Jalapenos are excellent sources of vitamins A and C, and folate. These peppers are extremely hot and spicy because of capsaicin, a chemical that is known to give it this fiery flavor. Extremely good for the health, jalapeno peppers are also known for inducing weight loss.he jalapeno pepper has many health benefits because of its many healthy components. Not only is it great for hair growth and reduction of hair loss, it is also good for the body because of its high quantity of antioxidants. Antioxidants help reduce the free radicals that damage cells.