I was just surfing the net reading stuff about veganism, when i came up to these things. Surely they are at least to some extent the work of the meat industry trying to scare us vegans, but...
Without B-12, a person can suffer from sever irreversible brain damage.
Amino acids wrote:
Protein intake and intake of individual amino acids can affect brain functioning and mental health. Many of the neurotransmitters in the brain are made from amino acids. The neurotransmitter dopamine is made from the amino acid tyrosine. The neurotransmitter serotonin is made from the amino acid tryptophan. If the needed amino acid is not available, levels of that particular neurotransmitter in the brain will fall, and brain functioning and mood will be affected. For example, if there is a lack of tryptophan in the body, not enough serotonin will be produced, and low brain levels of serotonin are associated with low mood and even aggression in some individuals. Likewise, some diseases can cause a buildup of certain amino acids in the blood, leading to brain damage and mental defects. For example, a buildup of the amino acid phenylalanine in individuals with a disease called pheylketonuria can cause brain damage and mental retardation.
Protein deficiencies may lead to mental retardation or stunted growth among children and loss of muscle mass among adults.
This means when i quit eating meat at the age of 12 and never took any supplements or things to replace the protein and amino acids from meat, that i am irreversibly retarded now?