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10 amazing healing plants you can find in your garden

celery on cutting board

Photo: Public Domain Photos/Flickr

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Celery seed extract has been shown to reduce blood pressure in animal studies. It also functions as a diuretic and can be used to treat psoriasis. However, large amounts might cause photodermatitis, so herbalists urge caution with its use. The essential oil of celery seed is known to have a “sedative and anticonvulsant effect.”