The researchers, who analysed a number of animal studies, said further research was needed as human studies were still very limited, but they cautioned against antihistamine overuse.
Further research was put on hold.
He said further research was needed.
Both studies concluded that further research was needed.
Though the style of the drawings resembles Leonardo's, the museum said further research was needed.
Dr. Goldstein said that it appeared that other organs' nerve systems were not affected but that further research was needed.
Lewis Moonie, a junior defence minister, welcomed the findings and said further research was already under way.
One recent examination of fifty-three medical studies found that further research was unable to replicate forty-seven of them.
But further research was required, he said, "to find out if this is a real connection or an epiphenomenon".
Further research was needed to identify the circumstances under which that mechanism did and did not work.
Further research was needed, he added, to determine whether all Omega-6 type fats provide similar results.
