From "Nutrition Almanac, Third Edition" by Lavon J. Dunne
"Nail Problems
Nails are composed almost entirely of protein. Abnormal or unhealthy
nails may be the result of a local injury, a glandular deficiency such
as hypothyroidism of a deficiency of certain nutrients.
A protein deficiency can cause opaque white bands to appear on the nails
or cause them to become dry, brittle, and very thin. Insufficient
amounts of complete proteins and/or vitamin A slow down the rate of nail
growth (which is also afected by various drugs). A shortage of Vitamin A
or calcium in the diet may also cause dryness and brittleness. A lack of
the B vitamins causes nails to become fragile, with horizontal or
vertical ridges appearing. The B complex is also a factor in fungus
infestation found underneath the nails. Frequent hangnails usually
indicate in inadequate intake of vitamins C and folic acid and protein.
An iron deficiency can disturb the growth of the nails, causing dryness,
brittleness, thinning, flattening, and eventually the appearance of
moon-shaped nails. White spots can be caused by a zinc deficiency.
Any nail abnormality indicates that the diet is not adequate; a
well-balanced diet supplying all essential nutrients is recommended.
nutrients that may be beneficial in treatment of nail problems:
Vitamin A
Vitamin B complex
Folic acid
Vitamin C
Calcium
Iron
Zinc
Protein"
The book is now in the 5th edition, but for straight nutritional info
the 3rd ed. is far superior. The 5th ed, for example has no entry at all
for nails or nail problems.
sol
--
“All higher animals, including the cat, are essentially tubular.” Pollock, R.
Cornell Book of Cats.
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