All about fruitarianism with a long-term fruitarian, Lena

Vitamin B-12 status did not change significantly after treatment in the placebo group with daily supplementation with high doses of oral vitamin B-12 alone or in combination with folic acid.

Oral vitamin B-12 supplementation corrected mild vitamin B-12 deficiency.

Vitamin B-12 + folic acid supplementation increased red blood cell folate concentrations and decreased total homocysteine concentrations by 36%.

Improvement in memory function was greater in the placebo group than in the group who received vitamin B-12 alone. Neither supplementation with vitamin B-12 alone nor that in combination with folic acid was accompanied by any improvement in other cognitive domains.

Gottfried Wilhelm Leibniz

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Vitamin B1 Thiamine

Vitamin B1 (Thiamin, Thiamine) is one of 8 B vitamins, the first B vitamin discovered. All B vitamins help the body convert carbohydrates into glucose, which the body uses to produce energy, B-complex vitamins also help the body metabolize fats and protein. All B vitamins are water soluble.

All living organisms use thiamine, but it is synthesized only in bacteria, fungi, and plants. Animals must obtain it from their diet, therefore for humans it is an essential nutrient.  Your body needs it to form adenosine triphosphate (ATP), which every cell of the body uses for energy.

B1 helps convert food into energy, needed for healthy skin, hair, muscles, and brain. 

Thiamine deficiency has a potentially fatal outcome if it remains untreated. In less-severe cases, nonspecific signs include malaise, weight loss, irritability and confusion.

Recommended daily amount: 1.1 - 1.2 mg (~ 50 g of flaxseeds, or sesame tahini, or 100 g pine or sunflower seeds, or corn flour). Apple