3. Vegetarianism
It is perfectly possible, certainly, to get enough iron from a vegetarian diet. In fact, some of the most abundant sources of iron such as spinach and green, leafy vegetables, are vegetarian.
The problem is that you also typically get a lot of iron from red meats. If you are vegetarian then it is very important that you understand the unique challenges that come from this diet choice and that you alter what you eat accordingly. You will likely benefit from some kind of iron supplement for instance.
Vegetarians can also struggle to get vitamin B12 – which is significantly harder to come by on a vegan diet. B12 is also used in red blood cell production and a loss of B12 can lead to another form of anemia. Thus, this is another good reason to do your homework and to proceed with caution when trying a vegetarian diet.