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 Yellow Nails. Fungal Infections. Yellow nails are most commonly the result of a fungal infection, which makes plenty of sense as your hands and feet come into contact with all kinds of potentially infectious bacteria; your toes in particular are exposed to moist, warm temperatures where fungus can fester.