Look for rust on nails or dark rings on the wood around nails. (workingre.com)
«These coffee grains accumulate at the edge,» Collings said, «and after the drop has completely dried a nice, dark ring of coffee particles results.» (sciencedaily.com)
While eating a healthy diet can give the body all the nutrition the body needs, physical signs on the body such as chicken skin on the upper arms (keratosis pilaris) or dark rings under the eyes can all point to vitamin or nutritional deficiencies. (dontmesswithmama.com)