Archive for January, 2007

VAT associated with physical activity

Wednesday, January 31st, 2007

Visceral fat and subcutaneous fat are both associated with total body fat. But only visceral fat is inversely associated with physical activity. This is because the strongest correlation is between insulin resistance and visceral fat. Because exercise improves insulin sensitivity, as well as other positive actions, it would make sense that ...

Soy has low glycemic and insulin responses

Tuesday, January 30th, 2007

Soy foods may improve blood glucose and insulin control. All soy foods were found to be low glycemic and illicit minimal insulin responses, testing low on the glycemic index and the insulin index. Other studies have shown that post exercise, soy underperforms more insulogenic proteins (like whey) for stimulating protein synthesis ...

Lifestyle factors associated with BMI and Waist Circumference

Monday, January 29th, 2007

Twins were studied to determine which lifestyle factors are associated with elevated BMI and waist circumference. Low physical activity was associated with increased waist circumference. Low fiber intake was associated with both an increased BMI and an increased waist circumference. Other dietary habits proved secondary. Abstract

Sleep and obesity

Saturday, January 27th, 2007

Sleep deprivation is associated with obesity. This is true of even short term sleep deprivation. A study of truck drivers found that the higher the BMI, the shorter sleep duration. Other factors associated with obesity were: age, glucose levels, cholesterol, snoring and hypertension. Abstract

PCBs and thyroid hormones

Friday, January 26th, 2007

PCBs are industrial chemicals that were heavily used until they were banned in the US in 1977. Even though they have not been used in 30 years they continue to be measurable in US populations. They have a negative impact on thyroid levels. PCBs build up in fish, similar to mercury. ...

Dieting and weight gain

Thursday, January 25th, 2007

Long term dieting does not lead to weight gain. In fact, girls that reported "always dieting" had the lowest BMI and girls that reported "never dieting" had the highest. The Dieting Behavior Scale produced similar results. Abstract