PubMed · 15317067
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
Janine Freeman. 2003. Beyond weight control.. https://pubmed.ncbi.nlm.nih.gov/15317067/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
We examined breast cancer risk in association with overall glycemic index (GI), glycemic load (GL), and dietary carbohydrate and sugar intake in a prospective cohort of 49,613 Canadian women enrolled in the National Breast Screening Study who completed a self-administered food frequency questionnaire between 1980 and 1985. Linkages to national mortality and cancer databases yielded data on deaths and cancer incidence, with follow-up ending between 1998 and 2000. During a mean follow-up of 16.6 years, we observed 1,461 incident breast cancer cases. GI, GL, total carbohydrate and total sugar intake were not associated with breast cancer risk in the total cohort. However, there was evidence of effect modification of the association between GI and breast cancer risk by menopausal status (p = 0.01), the hazard ratio for the highest versus the lowest quintile level of GI being 0.78 (95% CI = 0.52-1.16; ptrend = 0.12) in premenopausal women and 1.87 (95% CI = 1.18-2.97; ptrend = 0.01) in postmenopausal women. The associations between GI and GL were not modified by body mass index (BMI) or by vigorous physical activity among pre- or postmenopausal women. Similarly, the associations between GI/GL and risk in postmenopausal women were not modified by BMI, vigorous physical activity, or ever use of hormone replacement therapy (HRT), although the associations were slightly stronger among those who reported no vigorous physical activity (ptrend = 0.02), among those who reported ever using HRT (ptrend = 0.02) and among normal-weight women (BMI < 25 kg/m2; ptrend = 0.03). Our data suggest that consumption of diets with high GI values may be associated with increased risk of breast cancer among postmenopausal women, possibly more so among subgroups defined by participation in vigorous physical activity, ever use of HRT and those who are not overweight.
BACKGROUND/AIMS: Little information is available about the nutrition of people with diabetes from Africa. For the treatment and prevention of diabetes by nutrition, we have assessed the major local foods in a baseline study. METHODS: The staple foods and meal frequencies of 53 outpatients with type-2 diabetes were assessed in a 24-hour dietary recall based on a questionnaire at a diabetes clinic in northern Tanzania in November and December 1999. In addition, data on weight and height, casual blood glucose, urinary glucose and diabetes therapy were ascertained. RESULTS: 72% of the patients had a body mass index of > or =25 kg/m(2); 64% of patients had casual blood glucose levels of >7.8 mmol/l, 47% had >11.1 mmol/l, and most of them were treated by sulfonylureas or conventional insulin therapy. The test for urinary glucose highly correlated with the blood glucose values, and was positive in 59% of patients. 36% of the patients had < or =3 meals/day. The foods stated most frequently were stiff porridge, plantains, bread, rice, beef, milk, amaranth leaves, orange and sunflower oil. The main beverages were water, tea and milk. CONCLUSIONS: The baseline data obtained enable more precise dietary assessment and emphasize the need to collect more data on local food consumption in areas where pharmacological diabetes treatment is limited.
AIMS/HYPOTHESIS: The association of insulin detemir with non-esterified fatty acid binding sites on albumin may limit its transfer from the circulation into the extravascular extracellular space in adipose tissue and muscle, due to the capillary endothelial cell barrier. In the liver, the open sinusoids may expose hepatocytes to insulin detemir, enabling it to have a greater effect in the liver than in peripheral tissues. METHODS: We investigated the effects of equipotent doses of insulin detemir and NPH insulin on hepatic glucose rate of appearance (Ra), peripheral glucose rate of disposal (Rd) and glycerol Ra (a measure of lipolysis) using stable isotope techniques. We also investigated the effects of these insulins on NEFA concentrations in seven healthy volunteers during a 16-h euglycaemic clamp. A higher dose of insulin detemir was also studied. RESULTS: There was no difference in the glucose infusion profile between insulin detemir and NPH. Insulin detemir had a greater effect on mean suppression of glucose Ra (mean difference 0.24 mg kg(-1) min(-1); CI 0.09-0.39; p<0.01), and minimum glucose Ra, with minimum low dose detemir -0.10+/-0.15 mg.kg(-1).min(-1) and minimum NPH 0.17+/-0.10 mg.kg(-1).min(-1) (p<0.02). However, it had a lesser effect on mean suppression of NEFA concentrations (mean difference -0.10 mmol/l; CI -0.03 to -0.17; ANOVA, p<0.02) than NPH. The effect of insulin detemir on glucose Rd and glycerol Ra was not different from NPH. Following high-dose detemir, total glucose infused and maximum glucose Rd were higher (p<0.02, p<0.03) and plasma NEFA concentrations lower (p<0.01) than with low-dose determir. CONCLUSIONS/INTERPRETATION: This study suggests that insulin detemir, when compared to NPH insulin, has a greater effect on the liver than on peripheral tissues and thus has the potential to restore the physiological insulin gradient.