Because they are credible sources and they know the implications of misinformation.
Face value
Because they all think like me
reliable sources
Just do, my instincts tell me.
I trust science, to a degree I trust independent organisations who have nothing to lose or gain from the sale of organic products.
objectivity
Not all of them I trust. Like retailers I don't trust.
They seem reliable
Family or friends who share their experience with me
My doctor because of his professional advice