Yams and colorectal cancer.
Data about yams was provided by 2 cohorts. No associations were found with colon or rectal cancer risk.
| More information: back to literature review.|
Data about yams was provided by 2 cohorts. No associations were found with colon or rectal cancer risk.
| More information: back to literature review.|
| Author | Cohort name | Subjects | Years of follow-up | Cases | End point | Consumption of | Relative Risk (RR) | Adjustments |
| 6) Michels KB. (2000) | The Nurses' Health Study & The Health Professionals' Follow-up Study. | 88,764 women aged 34-59 and 47,325 men aged 40-75. (USA) | Women: 16 (1980-1996). Men: 10 (1986-1996) | 1,181? (937 colon cancer [368 men, 569 women], 244 rectal cancer [89 men, 155 women]) | Colorectal cancer risk | Yams | Intake of individual vegetables that constitute the composite items was not appreciably associated with colon or rectal cancer risk in women or men (No data data shown). | age, family history of colorectal cancer, sigmoidoscopy, height, body mass index, pack-years of smoking, alcohol intake, physical activity, (women: menopausal status, postmenopausal hormone use,) aspirin use, vitamin supplement intake (ever use of multivitamins or vitamins A, C, or E), total caloric intake, and red meat consumption. |
| 6) Giovannucci E. (1994) | The Health Professionals Follow-up Study. | 47,949 men aged 40-75. (USA) | 1986-1992 | 205? | Colon cancer risk | Yams | Of all vegetable items examined individually, none were statistically significantly related to the risk of colon cancer (no data shown). | Age, energy. |