Potassium intake and risk for hyperkalaemia reviewed It is nearly impossible to get an overdose of potassium from natural food sources.
Adequate limit value for pyrrolizidine alkaloids in herbal tea and herbal preparations Pyrrolizidine alkaloids (PAs) are natural toxins occurring in a wide variety of plants, including herbs.
Risk of degradation of European ecosystems by air pollution is decreasing The number of natural areas in Europe that are threatened by air pollution will decrease between 2005 and 2020.