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Link to original content: http://www.ncbi.nlm.nih.gov/pubmed/6893659
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Comparative Study
. 1980 Dec;104(12):635-9.

Analysis of brain weight. I. Adult brain weight in relation to sex, race, and age

K C Ho, U Roessmann, J V Straumfjord, G Monroe
  • PMID: 6893659
Comparative Study

Analysis of brain weight. I. Adult brain weight in relation to sex, race, and age

K C Ho et al. Arch Pathol Lab Med. 1980 Dec.

Abstract

The weights of fresh brains obtained at consecutive autopsies over a period of five years were reviewed. Brains with lesions, such as large tumor, hemorrhage, infarct, or edema, were excluded. Analysis of the brain weight of 1,261 subjects, aged 25 to 80 years, show that the mean brain weight decreases in order from white men to black men to white women to black women. These differences are statistically significant and become apparent at age 6 years. The rate of decrease for the brain weight after age 25 years is highest for white men, followed by black women, white women, and black men, and, except that between white men and white women, the differences are statistically insignificant. Contrary to earlier reports, the mass decreases rapidly after age 80 years. In evaluating an individual brain weight, it is important to compare it with the norm for each subgroup of a given age.

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