The priority is to give up smoking rather than worrying about putting on weight. You can tackle the weight gain later.. There is very little evidence that weight gain leads to a relapse in people who have given up smoking, she adds.ry not to let the propect of putting on weight put you off quitting smoking. Not everyone puts on weight and, even if you do gain some pounds, certain strategies can help you control it. These include: 1  doing more exercise.
The essential components of the human cardiovascular system are the heart, blood and blood vessels. It includes the pulmonary circulation, a loop through the lungs where blood is oxygenated; and the systemic circulation, a loop through the rest of the body to provide oxygenated blood.
Red blood cells circulate through your body for 3 to 4 months. Parts of your body, such as your spleen, remove old blood cells. Iron is a key part of red blood cells. Without iron, the blood cannot carry oxygen effectively.