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.
Causes of Brittle Nails. Some of the causes of brittle nails are injury, infections, diseases, poisons, or medications. Injuries to the nail from constant exposure to water or nail polish can cause them to become brittle and peel off. The base of the nail could also get crushed and deform.