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.
Swelling in the extremities is often caused by idiopathic edema or excess salt consumption. Swollen hands and feet are commonly caused by idiopathic edema, which is usually not serious. Swollen hands may be a sign of heart disease. Prolonged periods of physical inactivity may cause swollen hands and feet.