Ken Jones, a leading amateur microscopist, specialises in video-filming pond-life. One of his videos captures the enigmatic and graceful movement of Volvox, and he has kindly allowed us to show some extracts from his film on this page. A single Volvox colony spins through the dark waters of a pond. Daughter cells are just visible inside. Micscape Editor's note.
Heart, liver, or kidney disease. Sometimes swelling can indicate a problem such as heart, liver, or kidney disease. Ankles that swell in the evening could be a sign of retaining salt and water because of right-sided heart failure. Kidney disease can also cause foot and ankle swelling.
Congestive heart failure causes the ankles and feet to swell because the heart is not pumping as much blood to the kidneys. This causes fluid retention, which results in the ankles and other areas of the body swelling up. Kidney failure can also cause swollen feet and ankles, again because of fluid retention. Though some swelling of the ankles in pregnancy is normal, if the ankles start to swell quickly, it may be a sign of eclampsia, explains WebMD.