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Re ALA DHA and EPA.
It is a good point that flaxseed contains oleic acid. It can also contain up to 18% omega six.
If extracted by cold pressing oils may contain other things as well as fats. Olive oil and flaxseed have there own related chemicals.
In olive oil claims have been made that the phenols etc may assist as well as the oleic acid.
It is a question as always of balance. They did not shown a figure for the effect of DHA but used the word profound. Another trial said "Moreover, exogenous supplementation with DHA significantly decreased the expression of Her-2/neu-codified p185(Her-2/neu) oncoprotein (up to 78% reduction in BT-474 cells)."
All three are needed. The ones most likely to be lacking in most diets are DHA and EPA.
Another complication is the influence of direction of the funding eg Olive oil growers, flax seed growers etc which huma nature would suggest would result in the report being written from that perspective.
Figures vary depending which trials you read. What is clear is that a balance of all the threes is essential, and oleic assists.
Further may different plants have additional beneficial properties.
RB
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