Total cancer risk: Data about total cancer risk was provided by 2 cohorts (2, 20). No association was found.
Total cancer mortality: Data about total cancer death was provided by 2 cohorts (1, 21). No association was found.
Conclusion: No evidence was found for an association between yellow vegetables and total cancer.
| Author | Cohort name | Subjects | Years of follow-up | Cases | End point | Consumption of | Relative Risk (RR) | Adjustments | |||||||||||||||||||||||||||||||||||
| 21) Iso H (2007) | The JACC Study. | 39,323 men, and 55,480 women. (Japan) | Not defined. | 3,249 men, and 1,971 women. | All cancer mortality | Carrot or pumpkin |
Age and study area. |
20) Takachi R. (2007) | The Japan Public Health Center-based Prospective Study (JPHC). | 77,891 subjects (35,909 men 41,982 and women) aged 45-74. | (Japan) 5.8 | (1995-1998 to 2002) 3,230 (636 gastric, 598 colorectal, 397 lung, 233 breast, 193 liver, 1,173 other) | Risk of cancer | Yellow vegetables (carrots, tomatoes, pumpkins, and tomato juice) | HR = 0.97 (0.87-1.07; P = 0.92) for the highest vs lowest quartile of consumption (not defined). | Amount specific data (quartiles): Q1: HR = 1. Q2: HR = 0.92 (0.83-1.02). Q3: HR = 1.00 (0.90-1.11). Q4: HR = 0.97 (0.87-1.07). age, public health center area, BMI, physical activity, smoking, alcohol, energy, screening examination, medication, and daily vitamin supplement use. |
2) Shibata A. (1992) | The Leisure World Study. | 11,580 residents of a retirement community. | (USA) 1981-1989 | 1,335 (645 men, 690 women) | All cancer risk | Yellow vegetables (sweet potatoes, yams, pumpkin [including use in pie or soup], carrots, summer squash [zucchini, yellow crookneck, yellow straightneck, cocozelle, scallop squash], sweet red peppers, hot red chili peppers [including hot pepper sauce, chili powder, cayenne pepper, tobasco sauce].) |
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Age and smoking. |
Adjustment for BMI or physical activity did not materially alter the results (data not shown). 1) Colditz GA. (1985) | The Massachusetts Health Care Panel Study. | 1,226 residents 66 years or older. | (USA) 5 | (1976-1980) 42? | Total cancer mortality | Carrots or squash | RR = 1.0 (0.5-1.8; No P-value) for high vs low consumption using median cut (median cut = 1 serving/wk). | Age. |
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