Dangers
In rare cases, yarrow can cause severe allergic skin rashes; prolonged use can increase the skin's photosensitivity. This can be triggered initially when wet skin comes into contact with cut grass and yarrow together.
In one study, aqueous extracts of yarrow impaired the sperm production of laboratory rats.
Read more about this topic: Achillea Millefolium
Famous quotes containing the word dangers:
“So closely interwoven have been our lives, our purposes, and experiences that, separated, we have a feeling of incompleteness—united, such strength of self-association that no ordinary obstacles, difficulties, or dangers ever appear to us insurmountable.”
—Elizabeth Cady Stanton (1815–1902)
“Fearlessness is a more than ordinary strength of mind, which raises the soul above the troubles, disorders, and emotions which the prospect of great dangers are used to produce. And by this inward strength it is that heroes preserve themselves in a calm and quiet state, and enjoy a presence of mind and the free use of their reason in the midst of those terrible accidents that amaze and confound other people.”
—François, Duc De La Rochefoucauld (1613–1680)
“The chief reason warfare is still with us is neither a secret death-wish of the human species, nor an irrepressible instinct of aggression, nor, finally and more plausibly, the serious economic and social dangers inherent in disarmament, but the simple fact that no substitute for this final arbiter in international affairs has yet appeared on the political scene.”
—Hannah Arendt (1906–1975)