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.
But in general, if your fingernails are strong, but curling this is less of a concern than if they are weak and âbendyâ. Specifically: Curling down is very much associated with respiratory problems- asthma, chronic bronchitis, emphysema and the like. Iron deficiency will produce pale nails which can curl.