In addition to all the other replies and possible vegan nutrient deficiencies, I experienced one significant weakness. However, it is rarely ever mentioned, and that I only discovered about three months ago.
I was deficient in omega-3 fatty acids.
I always had a small, mostly unnoticeable tic, like head nods and excessive eye blinking. I developed full-blown Tourettes Syndrome within five months of going Vegan. (Properly ‘diagnosed’ after a year)
I was confused and didn’t think going Vegan was the cause of this. I had regular blood tests, before and after, and everything seemed to be thriving. I was eating as good as you can imagine.
I visited doctors and neurologists, and none of them seemed to think that being vegan was possibly causing this.
Effects Of Vegan Nutrient Deficiencies
After many visits to the doctors, specialists, and many prescribed medications. However, no one was able to tell me why this was happening. Or at least point me in a direction other than prescribed drugs.
I became vegan for a personal reason. And I stopped because of another particular purpose. One thing I added into my diet immediately, for no reason at the time, was Krill Oil.
I didn’t feel much different at first, however after a few weeks of consuming Krill Oil tablets, and eating a healthy omnivorous diet. My ‘Tourette Syndrome’ started to get better progressively. After two months, they had almost vanished.
However, I became more interested in learning more about Omega-3. Moreover, after some research, I found what I believe was the answer to developing this neurological disorder.
There are 11 different kinds of Omega-3 Fatty Acids. However, 3 of them being essential Omega-3 Fatty Acids.
However, the most common deficiency is vitamin B12. Plants cannot produce this vitamin. Additionally, the only sources are animal products. A synthetic version is often in improved texts of food commonly consumed by vegans, such as almond milk and tofu. You can also take B12 pills.
The Three Essential Omega-3 Fatty Acids
ALA (ALPHA-LINOLENIC ACID)
EPA (EICOSAPENTAENOIC ACID)
DHA (DOCOSAHEXAENOIC ACID)
Being on a plant-based (vegan) diet, I was only providing my body with ALA Omega-3 Fatty Acids.
Many people might reply, saying that “our body can convert ALA Omega-3 Fatty Acids into EPA and DHA”, which is true. However, the conversion is inefficient. Additionally, it doesn’t convert an adequate amount to be sufficient enough for the human body.
The conversion might supply 10% of the required amount of EPA and up to 5% of the required amount of DHA to the human body. That is, as I mentioned, highly inadequate compared to the full amount that our body needs.
This is my own experience. However, I believe that a vegan diet is impossible in my life. I would never be fully vegan again due to this issue.