4. Lowered Immune System
Your body’s immune system is what makes sure that you don’t get the flu of the season every single season, and there are a thousand possible things that can give your immune system an unnecessary knock – sometimes it’s just due to stress, while other times you might be following the wrong diet and it’s down to what’s been making you sick.
At the same time, there might be times where your immune system will be compromised for a long period of time – and if things aren’t getting better, it can be an immediate sign that you should be seeing your doctor.
A long-term lowered immune system will almost always indicate an underlying condition of some sort, and you should consider osteosarcoma as a potential cause if you have been experiencing this symptom together with any of the other symptoms or early signs on this list in combination with one another.