To reduce radio frequency exposure when using a mobile phone in a vehicle, ensure that the vehicle is fitted with an external antenna.  If there is no antenna, the phone signals bounce around the inside of the vehicle, exposing the occupants to increased levels of radiation.               

A group of leading researchers in the field of electromagnetic safety has confirmed the existence of non-thermal (non-heating) effects of electromagnetic fields (EMF’s) on living matter. They have called for urgent work to be done to discover the mechanisms of by which EMF’s cause these effects and for exposure standards to be lowered in accordance with the Precautionary Principle.
 

According to a report in the Telegraph (UK), a study has found that teenagers who used their mobile phones frequently (making more than five calls or sending more than five text messages per day) were more likely to experience disrupted sleep, restlessness, stress and fatigue than those who used their phones less frequently.

To reduce chemical exposure, use glass, cast iron or stainless steel cookware rather than Teflon-coated items. There are concerns that toxic chemicals may be released from Teflon which has been heated to temperatures commonly reached during cooking processes.