Low Density Polyethylene is one of the safest plastics in widespread use today, mainly because it is nontoxic, and is not carcinogenic. Even when ingested (in small quantities), polyethylene does not cause any hazardous health effects. 

This means that Low Density Polyethylene is considered safe and non hazardous for human skin contact, inhalation, and ingestion. 

However, it should be noted that during the production of LDPE, the material may come into contact with hazardous chemicals which may blend with the plastic as it is processed. As a result, chemicals may leach into food or the environment during use, compromising the sterility of the end product. This primarily applies to recycled low density polyethylene, with ‘virgin’ low density polyethylene products being considered food-grade by the FDA.