Study under review: The Effects of Dairy Intake on Insulin Resistance: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.
Insulin resistance is a key underlying mechanism of prediabetes and type 2 diabetes. Prediabetes is often diagnosed based on impaired fasting glucose (IFG). The prevalence of IFG and type 2 diabetes is about 40% in the U.S., making it one of the most important issues present in healthcare. Dietary patterns are one of the leading causes of insulin resistance, with high energy intake being one of the leading risk factors for developing insulin resistance.
As dietary patterns are a key contributor to insulin resistance, it stands to reason that dietary modification may ameliorate it. Dairy is one food group that has been investigated as a potential dietary modification to address insulin resistance. Cohort studies and observational studies have shown that dairy may be beneficial for insulin resistance.
In addition to cohort and observational studies, several randomized trials have examined the effects of dairy on insulin resistance, with varying results. For example, one study found that increased dairy intake did not alter insulin resistance in hyperinsulinemic adults. Another study found that consuming dairy did improve insulin resistance in otherwise healthy adults. The varying results of randomized trials make it difficult to form overall conclusions, suggesting that pooling results would be helpful. The present study is a systematic review and meta-analysis of randomized controlled trials examining the effect of dairy intake on insulin resistance, bodyweight, and waist circumference.
Insulin resistance is a key mechanism of prediabetes and type 2 diabetes. Dairy has been investigated as a dietary intervention for improving insulin resistance, with varying results in randomized controlled trials. The present study is a systematic review and meta-analysis on the effect of dairy on insulin resistance, bodyweight, and waist circumference.
Other Articles in Issue #61 (November 2019)
Mini: Can exercising help alleviate primary dysmenorrhea?
We summarize the main take-aways from a recent Cochrane review exploring exercise's effects on primary dysmenorrhea.
Cutting through liver fat with citrus
Hesperidin, a compound found in the peels of citrus fruits, has shown promising results in rats for improving fatty liver. This trial put hesperidin to the test in people with nonalcoholic fatty liver disease.
Rate of weight loss and body composition: does “slow and steady” win the race?
More severe energy restriction usually leads to higher amounts of weight loss, but it could also lead to a higher proportion of muscle or bone loss. This study explored the effects of the rate of weight loss in postmenopausal women.
Investigating the effects of eating every other day on body composition and aging-related factors
The effects of alternate-day fasting haven't been well-explored in metabolically healthy people without obesity. This study aimed to help fill that gap.
Casting a wider net for marine oil’s cardiovascular benefits
We previously covered a major meta-analysis which found that marine-derived omega-3 supplementation didn't have clear cardiovascular benefits. However, three large trials have been released since then. Do they make a difference?
Pro-bono: protein for bone retention
When people say they want to lose weight, they usually mean losing the weight from fat. However, weight loss can also lead to bone loss. This study explored whether high-protein diets can help retain bone.
Mini: Nutrient supplements for mental health disorders
We summarize key takeaways from a recent umbrella review that explored how useful nutrient supplementation is for a variety of mental health issues.