Sep 10, 2008 at 12:53 pm #1231110
@retropumpLocale: The Antipodes of La Coruna
Laurie kinda hinted at calcium as being important in weight management in the cottage cheese thread. That's part of the story. There is a growing body of evidence that calcium FROM DAIRY is even better than supplemental calcium for fat loss. Three serving per day have shown a greater impact on fat loss than the equivalent in calcium supplements. Again, if you have specific dairy allergies than YMMV, but most people can find fractions of dairy that are not allergenic. For instance, most fermented dairy products are free off lactose (think yogurt or camembert), and allergy to whole whey or cottage cheese proteins may be alleviated by taking hydrolyzed versions. The biggest thing to be aware of is the usually higher sodium content of many dairy products. If you are on a low sodium diet, always read the label!! And of course go easy on the camembert!
Here is one of the reviews that summarise recent findings:
Dietary calcium appears to play a pivotal role in the regulation of energy metabolism and obesity risk. High calcium diets attenuate body fat accumulation and weight gain during periods of over-consumption of an energy-dense diet, and to increase fat breakdown and preserve muscle retention during caloric restriction, thereby markedly accelerating weight and fat loss…….. Notably, dairy sources of calcium exert markedly greater effects in attenuating weight and fat gain and accelerating fat loss. This augmented effect of dairy products versus supplemental calcium has been localized, in part, to the whey fraction of dairy and is likely due to additional bioactive compounds, such as angiotensin converting enzyme (ACE) inhibitors in dairy, as well as the rich concentration of branched chain amino acids, which act synergistically with calcium to attenuate adiposity; however, these compounds do not fully account for the observed effects, as whey has significantly greater bioactivity than found in these compounds. These concepts are confirmed by epidemiological data as well as recent clinical trials which demonstrate that diets which include at least three daily servings of dairy products result in significant reductions in body fat mass in obese humans in the absence of caloric restriction, and markedly accelerates the weight and body fat loss secondary to caloric restriction compared to low dairy diets. These data indicate an important role for dairy products in both the ability to maintain a healthy weight and the management of overweight and obesity.
Key teaching points:
• Dietary calcium modulates circulating calcitriol (1,25-dihydroxyvitamin D) levels that in turn regulate intracellular calcium which affects fat metabolism in human adipocytes.
• Reducing calcitriol levels by increasing dietary calcium results in reduction of body fat in the absence of caloric restriction, substantially increases body weight and fat loss during caloric restriction and reduces weight and fat regain following successful weight loss.
• Dairy sources of calcium are markedly (50–100%) more effective than supplemental calcium in reducing body weight and body fat during caloric restriction. A portion of this additional anti-obesity bioactivity is attributable to the ACE-inhibitory activity of dairy and to the rich concentration of branched chain amino acids.
• This anti-obesity effect of dietary calcium/dairy is supported by cellular mechanistic studies, animal studies human epidemiological studies and clinical trials.
• Incorporating dairy into weight management regimens is associated with significant preservation of lean body mass during caloric restriction.Sep 11, 2008 at 6:41 am #1450848
Laurie Ann MarchMember
@laurie_annLocale: Ontario, Canada
Someday I'll have to tell you the story about how I lost an entire person and then some. I will say that calcium and protein both played an important role in that loss… so did backpacking.
That is great information Allison, thanks for posting it.
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