Some major examples of osmosis: 1  Absorption of water by plant roots. 2  Reabsorption of water by the proximal and distal convoluted tubules of the nephron. 3  Reabsorption of tissue fluid into the venule ends of the blood capillaries. 4  Absorption of water by the alimentary canal â stomach, small intestine and the colon.
Cancer treatment â Patients being treated for cancer with chemotherapy or radiation may experience a metallic taste. Pregnancy â During the early stages of pregnancy, some women find that their sense of taste changes. One of those changes may be a metallic taste.
Some common medical conditions that can cause metallic taste in the mouth include ear or upper respiratory infections such as sinusitis, as well as head injury or conditions that damage the central nervous system (CNS). A history of radiation therapy to the head and neck can also cause a metallic taste in the mouth.