| Autor: |
Martin, Lisa, Greenberg, Carolyn, Kriukov, Valentina, Minkin, Salomon, Jenkins, David, Yaffe, Martin, Hislop, Gregory, Boyd, Norman |
| Zdroj: |
Breast Cancer Research & Treatment; Jan2009, Vol. 113 Issue 1, p163-172, 10p, 1 Diagram, 4 Charts, 1 Graph |
| Abstrakt: |
We have previously shown that a low-fat dietary intervention for 2 years in women with extensive mammographic density decreased mammographic density to a greater extent than in the control group. Post-hoc analysis indicated that this effect was strongest in women who became postmenopausal during the follow-up period. The purpose of the present study was to determine if this potentially important finding could be confirmed in a new and larger group of subjects with a longer follow-up time. Participants in a low-fat dietary intervention trial who were premenopausal at entry and became postmenopausal during follow-up were examined. Total breast, dense, and non-dense area and percent density were measured in baseline and postmenopause mammograms using a computer-assisted method. Total breast and non dense area increased more in the control group compared to the intervention group (for breast area 2.6 and 0.2 cm2, respectively; P = 0.05, and for non-dense area 10.9 and 8.1 cm2, respectively; P = 0.06). Dense area decreased to a similar degree in both groups (−8.2 and −8.0 cm2, respectively; P = 0.84). Percent density decreased to a slightly greater degree in the control compared to intervention group (−9.4 and −7.8%, respectively, P = 0.11). There were no significant differences between study groups after adjustment for weight change. Menopause reduced density to a similar extent in the low-fat diet and control groups. If a low-fat diet reduces breast cancer risk, the effect is unlikely to be through changes in mammographic density at menopause. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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