The protein myth.
If I don’t eat meat how can I get enough protein?
Protein is a macro nutrient, a complex substance composed by several amino acids. When protein is ingested it is broken down in the intestinal tract into its simple, individual amino acids.We can compare the amino acids to building blocks; each cell in our body collects the amino acids they need for many different building purposes.
Meat and animal products despite seen as the only complete source of protein that one can ingest (which is a wrong concept), are composed by several amino acids which can also be found in plant foods. Unlike the plants these animal source proteins are proven to be high in saturated fats and have been linked to high risk of cancer development, and several other diseases.
The “Recommended Dietary Allowance (RDA) for protein for the average adult is 0.8 grams per kilogram of body weight; the average European citizen is still consuming protein above this level. As you can see anyone on a plant based diet can easily accomplish the RDA of protein.
So how can one get its complete proteins from a fresh and natural source? Simple, one needs to eat plenty of grains, legumes, nuts , seeds or simply combining legumes with grains such as barley, wheat, oats, rice, sesame seeds etc.
“Let’s get our protein fresh and natural, not secondhand as from animal’s flesh or from something in its dead state concocted by man”. Dr. J.R.Christopher
The calcium myth.
Where will I get my calcium if I don’t drink milk?
Calcium is an important micro nutrient, more specifically a mineral, which is essential to bone structure in the body. A lack of adequate calcium in the diet of an average adult nowadays seems to be a known fact, even though the majority of people have dairy present in their diets.
Our modern society’s diet is based upon animal and dairy products, which are known to be full of sulfur-rich proteins; sulfur which creates extra acidity in the body washing through the bones, dissolving calcium; and later excreting it via urine.
The consumption of inorganic sugars and starches have a similar effect, leaching calcium out of the body.
The consumption of milk, and other dairy products often marketed as the calcium panacea are actually a widely fallacious advertisement form the milk corporations. It is a fact that the calcium present in the milk does not metabolize properly;  also its high content of protein actually leaches calcium present in the bones. 
So, how can calcium be obtained and retained where is needed? By avoiding all animal products, refined starches and sugars, and focusing on a diverse plant based diet.
Consuming lots of legumes, dark green vegetables such as broccoli, collard greens, kale, sesame seeds, tahini and much more. Sea kelp is also shown to be a great source of calcium; one tea spoon mixed in a glass of water is a thousand times more rich in calcium when compared to a glass of milk.
The iron myth.
Where will I get my Iron if I do not eat meat?
First things first, how does Iron work in our bodies? Iron is a vital part of hemoglobin, it carries oxygen to the tissues; and also an important part of the enzyme system present in all cells, that is responsible for energy production and release.
Whole plant foods generally provide plenty of iron, though it is important to eat them with vitamin C rich foods such as oranges, peppers, green leafy vegetables, broccoli and cauliflower to boost absorption of the iron.
The consumption of animal products is always discouraged for the many health problems that it might cause. Problems which were already mentioned in the topics above.
This way, a safe dietary intake of Iron is possible through the consumption of many foods such as whole grains, nuts, legumes, dried fruits as raisins and plums; berries, combined with citrus fruits which increase the iron absorption.
Clement B.R., Digeronimo T.F. Living foods for optimum health. New York: Three rivers press;1998
kloss J. Back to Eden. Twin lakes USA: Lotus Press 2009
Plant based nutrition; Healthy eating without animal products available at http://www.vegansociety.com/