All about fruitarianism with a long-term fruitarian, Lena

Having established the association of vitamin B12 insufficiency with neurodegenerative disease, the challenge is to discern the direction, if any, of causation.

Most neurological impairments present a slow, progressive course (Josephs et al., 2009) and vitamin B12 levels may take a number of years to deplete (Herbert, 1988). Studies investigating causation would need to continue over an extended period of time.

Low serum vitamin B12 levels may play a role in the pathogenesis of neurodegenerative disease; however, it is equally plausible that neurological impairment may lead to poor nutrition and hence to inadequate dietary intake. Also, any association may simply be coincident or the factors predisposing patients for neurodegenerative disease may simply also expose the patient to a higher risk of vitamin B12 deficiency, for example, poor nutrition. Further intervention studies in large samples followed over an extended period of time are required. This will allow for further investigation of the role, if any, of vitamin B12 in the onset or progression of neurodegenerative disease, as well as the latent period of effect of vitamin B12 insufficiency before cognitive deficits are evident.

Linus Pauling

I have something that I call my Golden Rule. It goes something like this: 'Do unto others twenty-five percent better than you expect them to do unto you.' … The twenty-five percent is for error.

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