Be careful what you put on your skin - the skin absorbs chemicals on its surface. In other words your body consumes and ingests things like soap and toxins in engine oil, etc. Little research is done on this serious issue. In New Zealand a dangerous chemical which lowers IQ in children has been found in sunscreens. It is as damaging as lead paint. Even spraying the chemical into the air where is can be breathed in and ingested can lower IQ. Piperonyl butoxide is also present in insect spray. Cancer Society products even contain the substance. Low vitamin D has been blamed for many diseases when in fact it could be trace chemical in commonly used household goods. If vitamin D deficiency is causal then people in temperate countries would have higher cancer, Alzheimer's, heart disease, autism, depression and ADHD than those in tropical regions. This is only true for some of these illnesses. Too say 31 per cent of Australians in this hot country are deficient is ridiculous. h...