Why adults can suddenly get new allergies later in life

Adults can suddenly develop new allergies even when they have lived for decades without any health issues of that kind. Doctors explain that this happens because the immune system can get confused over time. Even though a person may have eaten a food or touched a substance safely for years, their body can suddenly start treating that item as a harmful invader. Medical experts point out that major life changes, moving to a new city, or changes in daily routines can trigger this shift in how the body reacts. While doctors still study the exact reasons, this sudden change shows that the human body keeps shifting even as people grow older.