I have wanted to write this post for a long time since I've been doing some research on nutrition and experimenting with my diet. I was never into veganism or vegetarianism, but there was a period when I cut on meat and dairy which led to dental and other problems. The only vegetarian I knew in real life (not a strict one, mind you, as she ate fish, eggs, milk products and occasionally, liver) developed fatigue and was diagnosed with anemia even though she was older (you know what I mean). Now she eats meat occasionally and feels better.
Here are some articles to make you think:
From New York Post:
a young woman develops amenorrhea, gets death threats after declaring on her blog that she quits veganism
A blogger decides to eat only raw vegan foods, with predictable results. Also touches on dangers of extreme weight loss fixation
A baby dies from malnutrition, vegan parents accused of child neglect.
From New York Times:
vegan parents whose child died convicted of murder
An Italian baby severely malnourished, vegan parents lose custody
A case of animal cruelty, from HuffPost:
a kitten fed strict vegan diet nearly dies, saved by meat
Vegetarian diet not necessarily more healthy, a study
And, it can cause mental health problems
Vegetarianism promoted by certain religious denominations and what the Bible says
I'd like to put a DISCLAIMER, that what you eat is naturally your own personal business. There are enough sources promoting vegetarianism and veganism, it's interesting to look on the other side.