|Whipped cream with strawberries - is it actually healthier with pastured cream? Is it less obesogenic, soothes inflammation and increases the oxidation while reducing the storage of body fat?|
Well, at least the first part shouldn't be news. The fact that this happens independent of their digestive kinetics, on the other hand, may come as a surprise.
Why? Well, "independent of their digestive kinetics", that means that the satiety effect does not depend on whether we're talking about fast- or slow-digesting dairy proteins. Or, practically speaking, it did not matter, if the subjects consumed
- 30g of casein (digested in 6h)
- 30g of whey protein (digested in 2.5h), or
- 30g of whey + casein protein (digested in 4h)
|Dietary amino acid appearance in the plasma (Marsset-Bagliery. 2014)|
From dairy protein to dairy fat - this is where pasture may matter
The question whether pasture (grass-fed) dairy is healthier, better or what-not is a topic of ongoing discussion among the members of the health and fitness community. While some people believe that the slightly higher amounts of CLA and omega-3 fatty acids, doesn't make a difference, others pretend as if eating conventional dairy would cost you 10 years of your maximal life experience.
The markers of inflammation, for example, were significantly reduced in rodents who were fed a 20% pasture (PDC) vs. 20% standard dairy cream diet (SDC; see Figure 2). The levels of PPAR-alpha & carnitine palmitoyltransferase in the liver and the levels of UCP2 in the adipose tissue, all three indicative of increased fatty acid oxidation in the liver and fat cells, respectively, increased (not shown in Figure 2).
And although the effects on the tight junctions of the gut (important for "leaky gut" prevention) were non-significant, the increase in the percentage of crypts with Paneth cells, the number of goblet cells per crypt and the expression of MUC-2 in the colon indicate that the pastured dairy had beneficial effects on the intestinal health of the rodents, as well.
Overall, the scientists attest that the replacement of a standard dairy cream with a pasture
dairy cream, albeit as part of a generally unhealthy "high-fat" (=hypercaloric) diet...
- lowers metabolic inflammation - for some markers even below the levels of the "healthy" standard (low fat) rodent diet
- prevents fat mass accumulation, despite increased energy intake - possibly due to an inxrease in lipid beta-oxidation, the pasture cream fed rodents could eat 0.8g/day more of the isocaloric chow and still presented lower body fat stores
- improves the protective function of the intestine - the increase in mucus coat thickness in the colon of the PDC mice might actually also have contributed to the reduced inflammation by decreasing the proportion of lipopolysaccharide crossing from the gut lumen to the systemic circulation
- Benoit B, Plaisancié P, Géloën A, Estienne M, Debard C, Meugnier E, Loizon E, Daira P, Bodennec J, Cousin O, Vidal H, Laugerette F, Michalski MC. Pasture v. standard dairy cream in high-fat diet-fed mice: improved metabolic outcomes and stronger intestinal barrier. Br J Nutr. 2014 Aug;112(4):520-35.
- Marsset-Baglieri A, Fromentin G, Airinei G, Pedersen C, Léonil J, Piedcoq J, Rémond D, Benamouzig R, Tomé D, Gaudichon C. Milk protein fractions moderately extend the duration of satiety compared with carbohydrates independently of their digestive kinetics in overweight subjects. Br J Nutr. 2014 Aug;112(4):557-64.