I wouldnt count on sources like seaweed, spirulina, or soil. I hear people that likely do need to supplement with B12 say that theyre OK because they eat foods that may include B12, but they can be unreliable sources, such as sea vegetables or nutritional yeast, says Ginger Hultin, MS, RDN, CSO, a lifelong vegetarian, chair of the VNDPG, and spokesperson for the Academy
Furthermore, changes in lifestyle modifications including healthy body weight, breastfeeding, limiting alcohol intake, and regular physical activity reduces breast cancer risk (325)
PMID 8598105.
From the previous study, it was observed that for an individual with chronic stage omega-3 fatty acid deficiencies, changes in the concentration of brain fatty acids can result in an altered serotonergic or dopaminergic neurotransmission, increase in 5-HT2, 27 and decrease in serotonin and dopamine in the prefrontal cortex, 29 thereby indicating the importance of adequate PUFA intake
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CLA can influence the storage and utilization of fat in the body
