Do I get enough proteins on a vegan diet / protein deficiency?

You can only get deficient on proteins if you don't consume enough calories:

" The World Health Organization (WHO) recommends that men and women obtain 5% of their calories as protein.  This would mean 38 grams of protein for a man burning 3000 calories a day and 29 grams for a woman using 2300 calories a day.  This quantity of protein is impossible to avoid when daily calorie needs are met by unrefined starches and vegetables. For example, rice alone would provide 71 grams of highly useable protein and white potatoes would provide 64 grams of protein.8

Our greatest time of growth—thus, the time of our greatest need for protein—is during our first 2 years of life—we double in size. At this vigorous developmental stage our ideal food is human milk, which is 5% protein.  Compare this need to food choices that should be made as adults—when we are not growing. Rice is 8% protein, corn 11%, oatmeal 15%, and beans 27%.8  Thus protein deficiency is impossible when calorie needs are met by eating unprocessed starches and vegetables.

The healthy active lives of hundreds of millions of people laboring in Asia, Africa, and Central and South America on diets with less than half the amount of protein eaten by Americans and Europeans prove that the popular understanding of our protein needs is seriously flawed. "

http://www.drmcdougall.com/misc/2007nl/apr/protein.htm

B12 is made by microorganisms that are found in the soil: http://books.google.no/books?id=Fn_EAmODnIkC&pg=PT202&lpg=PT202&dq=colin+campbell+microorganism+b12&source=bl&ots=5kzTTuMrlE&sig=xdee6LkL8OOG-nfknVeDbJrKIUc&hl=sv&sa=X&ei=vZNKU_vjKaqo0QWRloDwCA&ved=0CFUQ6AEwBQ#v=onepage&q=colin%20campbell%20microorganism%20b12&f=false

You are healthier on an average vegan diet compared to an average omnivore diet:
http://nutritionfacts.org/video/omnivore-vs-vegan-nutrient-deficiencies-2/

Humans can be healthy on a varied vegan diet (with B-12-supplement or B-12 fortified foods):
http://bloganders.blogspot.no/2013/08/humans-can-live-and-thrive-on-healthy.html

Vegans are at no risk of getting a protein deficiency

Please study this:
http://www.adelicatebalance.com.au/ and this:
http://drmcdougall.com/misc/2007nl/apr/dairy.htm
No risk of getting a protein deficiency.
" Proteins are made from chains of 20 different amino acids that connect together in varying sequences—similar to how all the words in a dictionary are made from the same 26 letters.   Plants (and microorganisms) can synthesize all of the individual amino acids that are used to build proteins, but animals cannot.  There are 8 amino acids that people cannot make and thus, these must be obtained from our diets—they are referred to as “essential.”

After we eat our foods, stomach acids and intestinal enzymes digest the proteins into individual amino acids. These components are then absorbed through the intestinal walls into the bloodstream.  After entering the body’s cells, these amino acids are reassembled into proteins. Proteins function as structural materials which build the scaffoldings that maintain cell shapes, enzymes which catalyze biochemical reactions, and hormones which signal messages between cells—to name only a few of their vital roles.

Since plants are made up of structurally sound cells with enzymes and hormones, they are by nature rich sources of proteins.  In fact, so rich are plants that they can meet the protein needs of the earth’s largest animals: elephants, hippopotamuses, giraffes, and cows.  You would be correct to deduce that the protein needs of relatively small humans can easily be met by plants."
Please also read this article: http://bloganders.blogspot.no/2013/04/the-purpose-of-cowpighorse-is-not-to.html

If we love animals, and don't want to inflict them suffering, we shouldn't eat them: http://bloganders.blogspot.no/2013/04/the-purpose-of-cowpighorse-is-not-to.html
They have a right to live.

No risk for protein deficiency as a vegan

Don Robertson

Did you know that human protein needs are actually quite small... As infants we grew very quickly on a diet (human breast milk) that contains only 5% of its calories as protein. Most Americans today get 15-20% of their calories from proteins, and that contributes to many health problems, including gout, kidney stones and kidney disease, osteoporosis, and all sorts of other problems related to inflammation. In fact, Cornell nutritional biochemist T. Colin Campbell, PhD, who led the most comprehensive large study (China Study) ever completed on diet and disease, is convinced that consumption of animal proteins, especially from cow milk, causes more cancers than does any chemical carcinogen.