Our immune system is one of our biggest assets: an army of devoted cells going into battle against threatening bacteria and viruses to keep us healthy every single day. However, a lot of factors can challenge the immune system's functioning. Stress, lack of sleep, various medications, or certain illnesses can create immune system struggles — and when that happens, your body definitely knows it. If you happen to have an immune system that's struggling right now, your body will be sending various signals that display what's going on. Even if you think you're in the bloom of health, if you're showing these symptoms, it may be a sign that all is not well with your immune cells.
The main signal that your immune system is struggling, of course, is how ill you get and how often. If you catch every bug that's going around, and also experience very slow healing time from viral symptoms — taking ages to feel better after the flu, for instance — it's a sign that your immune system isn't coping very well against threats and your protection is compromised. However, there are various other signals that can indicate immune issues, too. Keep an eye on your immune health to make sure you stay as protected as you can.