[â¦] Low body temperature is a direct indicator of a poorly functioning metabolism. Metabolism basically refers to how efficiently your body can turn fuel (food) into energy (such as heat). So low body temperature is a good indicator that your metabolism isnât doing so hot (pun intended).
1 Blood clot in the leg: A blood clot is a clump of blood thatâs in a solid state. When a blood clot forms in a vein of the leg, it can impair blood flow, leading to swelling and discomfort.  Injury or infection: An injury or infection affecting the foot, leg, or ankle results in increased blood flow to the area.
Heart disease causes leg and ankle swelling when the heart starts having trouble moving blood adequately through the body, states WebMD. Additional symptoms include fatigue, loss of appetite and fluid accumulation in other body parts. Foot and ankle swelling caused by infection is most common in patients with diabetes. Infection also causes fevers and warm patches on the affected skin. Blood clots are a serious cause of swelling that also cause fever, pain and skin discoloration, and require prompt treatment by a physician. Although some swelling feet are normal in pregnancy, a sudden increase in swelling is a sign of pregnancy-related high blood pressure, informs WebMD.