1 blood loss (caused by ulcers, some cancers, and other conditions; and, in women, during monthly periods); 2  a diet that doesn't have enough iron in it; 3  taking medications that interfere with the ability of the body to absorb iron; 4  an increase in the body's need for iron (for instance, in women during pregnancy). blood loss (caused by ulcers, some cancers, and other conditions; and, in women, during monthly periods); 2  a diet that doesn't have enough iron in it; 3  taking medications that interfere with the ability of the body to absorb iron; 4  an increase in the body's need for iron (for instance, in women during pregnancy).
I can tell you that your Celtic knot is a quaternary design - meaning it has four distinct sections within the design. Quaternary celtic knot meanings are upon the era, region, and artist of the design's inception (yes, more variables). Here are a few meaning possibilites of your Quaternary knot design... Indication of the four directions: North, South, East, West.
The Trinity Celtic symbol or the 3 cornered Celtic knot is perhaps the simplest of all the knots that is made by joining three curved lines on three corners. However, by combining this knot with other knotwork patterns, a more complicated design can be formed.