Quote Originally Posted by sleepybum View Post
From the replies thus far, I see that there are 2 reasons to discourage a diet that does not contain any red meats, chicken, and turkey.

1.

and,

2.

jamyjamjr: It is true that the amount of protein per ounce is lower in seafood (~25-30 g/100 g) than lean beef, veal, lamb, pork, turkey and chicken (~30-36) g/100 g). So that is up to 6 grams fewer/100 g serving.
I also know that parmesan cheeses provide the most protein serving (up to ~ 42 - 36 g/ 100 g); up to 6 g more than any lean meats. Additionally, mature beans (soybeans for example) provide around 37 g/ 100 g, and Lupin beans which provide 36.2 g/ 100 g, which is still more than any lean meats. If protein density is the issue with a diet that does not consist of lean meats, I would like to think that mature beans and high quality cheeses can compensate for that. Would I be correct in this assumption?

Twist: It's true that beef is slow digesting, but so is casein protein. The total release of amino acids in the bloodstream via casein can last as long as 7 hours after ingestion.

As for the nutritive value of seafood proteins... I have read in journals that:

"The nutritive value of marine fish proteins is equal to or better than that of casein and red meat proteins because of their favourable essential amino acid pattern... protein quality of most fish may exceed that of meat or are equal to that of an ideal protein such as lactalbumin"

from,
Marine Products for Healthcare: Functional and Bioactive Nutraceutical (Venugopal, Vazhiyil)

If what I know is true, and I can work around the fact that a) lean meats have a higher protein density than seafood and b) other protein sources have a still slower digestibility than lean meats; then, is it necessary still to incorporate lean meats into my diet?

Thanks so much for your feedback.
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I think that fish is excellent, don't get me wrong... although beef is higher in protein by weight, you get less than 70% of that through absorption, whereas fish is about 23%protein by weight but your body gets 80% of that. eggs are a perfect 100... so maybe you should try eggs... egg powder maybe idk. but you need variety. and soybean flour is 42% by weight but only 61% is absorbed. You need variety.

But the whole casein thing IMO is a load of shit. try a protein shake only diet and see how you respond. eat all food like carbs etc but get protein only through shakes - whey casein etc. you will lose muscle like crazy, strength will be in the toilet. MY best friend tried this experiment and kept a good log. I was there and saw his body go to shit, and he also cheated and ate chicken for one meal a day - to try to get some diversity. If you could drink to get big all the newbs would be huge. go ask reed and all the other big ass guys what their diet is and I bet they would not say that 40% of their nutrients are from shakes.