The smell which is called “ageing odors” starts increasing as we get older. The origin of aging odors is “nonenal,” which is generated by decomposition of the fat content in the body. Also it’s known that the decomposition of the fat is promoted by the oxidation stresses. In other words, the person who has many oxidation stresses gets more nonenal and the aging odors become stronger. As I previously mentioned in the column, the oxidation stress can be a cause of ED. Therefore, if the aging odors are strong, it means that you are having many oxidation stresses so then I can say that the possibility to develop ED is higher. Generally when people getting older than 40 years, they start getting the aging odors and the smell is often compared to the cheese, bedding not to be washed for a long time, mold and so on. If you feel that the aging odors are getting stronger or you had someone who pointed it out, you’d better to be aware because the possibility to develop ED can be higher.