Stop smoking and save your life smoking will effect on your blood . so stop smoking Smoking can increase the risk of many conditions, but did you know that it also has an effect on your blood? Here is how smoking can increase your risk of anaemia. Whether you are a smoker or not, you probably know that smoking can increase your risk for many serious medical problems. This includes anaemia. If you are prone to iron-deficiency anaemia and you're a smoker too, you need to pay attention. When you smoke, many harmful chemicals enter your lungs, which are then absorbed and spread to the rest of your body through your bloodstream. This has various effects on your health. Studies have shown that the decrease in haemoglobin levels in a smoker’s blood is compensated for by higher red blood cell production. This is called polycythaemia. But this is not always enough to lower the risk of anaemia, as there are other factors that can cause a greater risk