3.2 RESEARCH DESIGN Burns and Grove (2003:195) define a research design as âa blueprint for conducting a study with maximum control over factors that may interfere with the validity of the findingsâ.
MotherNature.com states that weak nails can mean there are problems elsewhere in the body. Psoriasis, a condition of the skin that can lead to itching, can cause weak nails. Hyperthyrodism, which is an overactive thyroid gland, can also cause weakness. Anemia may also contribute to weak nails. In addition, it can signal a calcium deficiency.
Insufficient Vitamins and Minerals. Just as a lack of protein can cause your nails to split and crack, so too can insufficient vitamins and minerals. Many people claim that it is almost impossible to get insufficient vitamins, minerals and proteins in our diets but that just isnt true.