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vegans Do not have a well-balanced diet Had a weight loss surgery Have been diagnosed with pernicious anemia, or the bodys inability to produce healthy red blood cells Have been diagnosed with health conditions that hinder nutrient absorption, such as pancreatitis and Crohns disease Have been diagnosed with Helicobacter pylori, a condition in the intestines that causes ulcer Have high risks of heart disease Have low levels of vitamin B12 in their blood Struggle with eating disorders With the abundance of benefits of vitamin B12, its injection form, cyanocobalamin, is also used today to treat a variety of health issues and many other conditions (depression, allergies, fatty liver disease, kidney disease etc)
From this follows that the increased level of oxidative stress is not a key factor responsible for intellectual disability
Avoid combining with other active serums containing vitamin C or niacinamide in excess, as this may over-stimulate skin.