All about fruitarianism with a long-term fruitarian, Lena

Serum vitamin B12, serum folate and red blood cell folate levels were examined among 36 strict vegans of 5-35 years' duration.

Vitamin B12 levels among the vegans were generally lower than in a control population. Most of the vegans had vitamin B12 values less than 200 pg/ml

None of the vegans had any hematologic evidence of vitamin B12 deficiency, however four of them had neurologic complaints. Long-standing vegans should be monitored for vitamin B12 levels.

Red blood cell folate levels were normal but serum folate levels among the vegans were higher than among the controls. 

William of Ockham

Entities should not be multiplied unnecessarily.

Lifestyle

Lifestyle - interests, opinions, and behavioural orientations of an individual, group, or culture. 

Personal lifestyle typically reflects individual attitudes, way of life, values, world view, and personal identity. Not all aspects of a lifestyle are voluntary. Surrounding social and technical systems can constrain the lifestyle choices available to the individual. Location is important factor of lifestyle. The nature of the neighborhood in which a person resides affects the set of lifestyles available to that person due to differences in degrees of affluence and proximity to natural and cultural environments. 

Lifestyle may include views on politics, religion, health, and intimacy.

For example, "green lifestyle" means holding beliefs and engaging in activities that consume fewer resources and produce less harmful waste, and deriving a sense of self from holding these beliefs and engaging in these activities.

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