Getting protein is not a problem for anyone unless they have a problem with their body which causes it to struggle to get protein. Protein is in almost everything we eat. What vegans do have trouble getting is the good quality protein that you only find in meat. My wife had excellent protein & iron levels and everything else. Calcium is a bigger concern imo as the body uses calcium to help remove excess protein from the body so it is difficult to have enough calcium after the body has used it. Two serves of dairy a day does not cut it. Dairy generally has alot of protein in it as well hence why it is not a good source of calcium as most of it goes towards getting rid of protein.While we do have the element of choice that some other animals may not (although, they do have some choice, most animals will choose to wait for prey rather than eat their own young)
In terms of choice, yes, we can choose what to eat and not eat, however we can't choose the impact (positive and negative) that different foods have on our body. For example, you can't "choose" to get 60g of protein from 1 serving of carrots.
Many folks who embrace the vegan diet often need to take certain supplements to get things that they can't get out of their food, or they're protein deficient (especially if they're active or into working out).
The rule of thumb is 1g of protein per pound of body weight.
So for a person who's 200 lbs (I figured we'd use a nice even number)
100 servings of Kale
or
16 servings of beans
or
20 servings of tofu
or
15 servings of soy milk
or
800 almonds
or
Chicken for lunch & Beef for dinner
Which sounds the most practical? Chicken & Beef...
(in fact, I think you'd be hard pressed to find someone who has room in their stomach or the kind of appetite it would take to eat 100 servings of kale)
By the way my wife knew levels in her body through multiple tests requested by Dr's who all automatically decided her lack of energy was due to her diet. It was only when she became pregnant that we found out she needed open heart surgery to fix heart problems which is what caused the tiredness.
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