Earwax or even a piece of hair could be lying on top of the eardrum and when the eardrum vibrates, it may cause funny noises (just like a piece of string on a lightly beating drum). Obviously, treatment is by removal. Eustachian Tube Dysfunction can also cause crackling/popping noises.
Adverse Reactions to Elemental Iron Supplements Meeting your daily iron recommendation is important, and you may have to take supplements to get what you need. Iron's primary function is carrying oxygen through your blood and delivering it to cells, tissues and all of your organs.
It is also one of the most abundant minerals on the planet. Iron is essential for many of the bodyâs metabolic functions, but its main role is in the production of hemoglobin, the protein within red blood cells that binds oxygen for delivery to the various organs. Iron is also important in the production of myoglobin, which helps catch oxygen for our muscles.