Abstract • A 35-year observation of the growth of my nails indicates the slowing of growth with increasing age. The average daily growth of the left thumbnail, for instance, has varied from 0.123 mm a day during the first part of the study when I was 32 years of age to 0.095 mm a day at the age of 67. (Arch Intern Med 140:73-76, 1980) References 1. Allbutt TC: Greek Medicine in Rome . New York, The Macmillan Co Publishers, 1921, p 56. 2. Boswell J: The Life of Samuel Johnson . London. Printed for G. Walker, J. Akerman, E. Edward, J. Arwood, W. Robinson and Sons, Liverpool; E. Thompson, Manchester; J. Noble Hutt, J. Wilson Berwick, W. Wyth and Co, Edinburgh; and G. Griffin and Co, Glasgow, 1820, vol 3, p 448. 3. Reil JC: Memorabilium Clinicorum, Medico-Practicorum . Halle, Impensis Curtianis, 1792, vol 3. 4. Bean WB: A note on fingernail growth. J Invest Dermatol 20:27-31, 1953. 5. Bean WB: Nail growth: A 20-year study. Arch Intern Med 111:476-482, 1963.Crossref 6. Bean WB: Nail growth: Twenty-five years' observation. Arch Intern Med 122:359-361, 1968.Crossref 7. Bean WB: Nail growth: Thirty years of observation. Arch Intern Med 134:497-502, 1974.Crossref 8. Egbert AL, Luque MH: Among Alaska's brown bears. Natl Geographic 148:428-442, 1975. 9. Munday KR, Fuller WA: Age determination in the grizzly bear. J Wildlife Management 28:863-866, 1964.Crossref 10. Craighead JJ, Craighead FC Jr, McCutchen HE: Age determination of grizzly bears from fourth premolar tooth sections. J Wildlife Management 34:353-363, 1970.Crossref 11. Rausch RL: Morphogenesis and age-related structure of permanent canine teeth in the brown bear, Ursus arctos L, in arctic Alaska. Z Morph Tiere 66:167-188, 1969.Crossref 12. Van Utrecht-Cock CN: Age determination and reproduction in female fin whales, Balaenoptera Physalus (Linnaeus 1758) with special regard to baleen plates and ovaries. Bijdr Bierk 35:39-100, 1965. 13. Dawber R: Fingernail growth in normal and psoriatic subjects. Br J Dermatol 82:454-457, 1970.Crossref 14. Bean WB: A discourse on nail growth and unusual fingernails. Trans Am Clin Climatol Assoc 74:152-167, 1962.
Archives of Internal Medicine – American Medical Association
Published: Jan 1, 1980