As you age, your immune system can becomes worse. One of the reasons your immune system doesn’t work as well with age is that your production of white blood cells is slows down.
Your body continuously produces these cells because they naturally die off and get recycled regularly, but as your production of them slows down, there won’t be as many overall to replace the ones that die.
This leaves you with fewer cells to fight off incoming diseases than you would’ve had when you were younger, making it harder to stave off illness. Another issue that your body may encounter with age is an increase in autoimmune diseases, meaning that your body begins to attack itself.
This occurs for a variety of reasons, but it means that your immune system begins to go after healthy body cells that are just doing their job, which can have both light impacts and serious ones.
When it comes to the parts of the immune system that are working properly, they tend to work less well with age. The white blood cells that do go to fight off infections and viruses will do so with less ferocity than they used to, meaning it takes a lot longer to get rid of an illness than it would have when you were younger.
Without the proper speed of an attack, the disease might get a foothold much easier and might have an easier time spreading and overtaking certain parts of the body. It’s important for your longevity and quality of life to do everything you can to strengthen your immune system as you age.