here's more from
http://skincare.lovetoknow.com/What_...rnail_Problems
Clearly, what is going on with your fingernails at any given time can sometimes be indicative of problems occurring elsewhere in the body. Concerns about the kidneys, heart, liver and skin may all be raised as a result of fingernail problems. Other maladies to watch out for include vitamin and nutrient deficiencies, malnutrition and, in some cases, silver or arsenic poisoning.
While little can be done in terms of nail care to prevent problems occurring elsewhere in the body, it is always helpful to adopt a healthy regimen that will benefit your nails and your overall health:
•Take a daily multivitamin
•Add a B-complex supplement to your regimen (many nail problems are related to vitamin B deficiencies)
•Up your protein intake (both nails and hair are made of protein)
•Indulge in fatty acids (good sources include nuts, vegetables, eggs, whole milk and flaxseed oil supplements)
Finally, if your nails are in poor condition but aren't related to any greater health problem, adopt a regimen that treats your nails well:
•Keep fingernails short to avoid unnecessary breakage and tears
•Apply vitamin E oil to the nail plate regularly to encourage moisture
•Wash hands with a moisturizing, antibacterial soap regularly
•Use a fragrance-free hand cream to eliminate the potential of allergic reactions