Diet and menarche in different ethnic groups.
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Adolescent↗
Biomedical subjects
L Garbaczewski
Publications and source records attributed to L Garbaczewski.
Plasma hormones and lipids in men at different risk for coronary heart disease.
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Adult↗
Diet, lifestyle, and menstrual activity.
Menstrual activity is dependent on a critical body weight and may, therefore, be modified by nutritional factors. Lower plasma levels of testosterone, androstenedione, dehydroepiandrosterone, and prolactin, and differences in gonadotrophin levels were found during the menstrual cycle in rural black South African versus white women. When premenopausal vegetarian South African black women were fed a Western diet, plasma testosterone and prolactin levels increased, while estradiol decreased and follicle-stimulative hormone increased. In postmenopausal black women a similar diet decreased plasma leutinizing and follicle-stimulating hormone and increased prolactin levels. Differences between white and black women eating their customary diets may be related to genetic factors and/or lifestyle and diet. However, a Western diet induced changes in hormonal activity in vegetarian black women. These changes in hormonal levels in black women were comparable to those found in women with menstrual irregularities. Further study is needed to determine whether the difference in hormonal activity during the menstrual cycle between vegetarian black and white women may in part explain the lower incidence of coronary heart disease and breast cancer in the former.
Adrenal Cortex Hormones↗
Diet and urinary steroids in black and white North American men and black South African men.
Urinary steroid hormone content was determined in Black and White North American men and in rural Black South African men between 40 and 55 years of age and in Black South African men over 60 years of age when maintained on their customary diets or when transferred to a vegetarian or Western diet, respectively. When eating their customary diets, Black South African men had lower levels of urinary estrogens and androgens than did Black and White North American men. The total androgen content decreased significantly in Black North American men on the vegetarian diet and increased in Black South African men fed a Western diet. Urinary excretion of estrogens was higher in older than in younger rural Black South African men. Data indicated that a vegetarian diet modified androgen and estrogen metabolism in North American men and that a Western diet was associated with higher levels of urinary steroid hormones in young Black South African men. Diet-related changes in steroid metabolism in rural Black South African men were age dependent. The relationship of the increased urinary excretion of steroid hormones in Black South African men, a low-risk group fed a Western diet, and the decreased excretion in Black and White North American men, high-risk groups fed a vegetarian diet, to the development of prostatic cancer remains to be clarified.
Adult↗