Quote (zeebot9 @ Apr 18 2011 07:32pm)
A few weeks ago i asked you about the cottage cheese before bed thing and why it works and your responded with:
i showed this to my nutrition lecturer and her response was:
Can you please answer these questions? i find this a very interesting subject and would love to know the science behind it.
Thanks, Zeebo.
Seems like your nutrition lecturer learned everything out of a single government sponsored textbook to give responses like that.
First of all,
Casein protein is an extremely slow digesting protein. As a result, it takes approximately 8 hours to fully digest, thus releasing a constant steady stream of amino acids into the body, while maintaining basal metabolism at the same time. This means that while you are sleeping, your metabolism persists as it is burning the casein protein and breaking it down into aminos. This process increases your BMR, and thus supports fat loss through increased metabolism - but also supports muscle sparing overnight when you would normally go catabolic. The reason for this is because with a steady release of aminos, the body has constant fuel for which to run off of, therefore not catabolizing muscle in the overnight fasting process.
Secondly, milk does have casein protein, but not enough based on calories. In addition milk is rich in sugars, which is not something you want to consume before going into a state of total rest. Doing so will almost certainly result in fat gain unless you have a naturally fast metabolism (hardgainers). 1 cup of milk only has 8g of protein whereas 1 cup of cottage cheese has 32g. 32g can last you from 6-8 hours worth of digesting. 8g of protein is too marginal to sustain you over that long period of time.
However if you drank say, 4 cups of milk (around 500 calories and 32g protein), you would have the same casein effect, BUT with added insulin response which would also go against fat loss - not to mention the added calories of milk which would also further hinder fat losses.
This is a non-scholarly article, but it sums up what I said nicely.
http://www.mens-total-fitness.com/casein-protein.html