This is pointed out in the work of Dr. He also found that many low thyroid conditions are not visible on blood tests. Barnes used a simple body temperature test to check for low thyroid. Upon awakening, put the thermometer snugly in the armpit for ten minutes, by the clock. A temperature below 97.8 strongly suggests low thyroid.
Psychiatric symptoms can include depression, brain fog, memory problems, and even psychosis.
Environmental toxins may pay a much larger role in undesirable childhood behavior than has previously been believed. One study comparing lead levels in convicted youths vs. non-delinquent youths found significantly higher lead levels in the bones of the young offenders. Another project addressed PCBs, toxins found sometimes in insulators of electrical equipment. Infants with significant amount of PCBs in their umbilical cords performed more poorly than unexposed babies in recognition of faces, ability to shut out distractions, and overall intelligence. Citing dramatic rises in childhood mental disturbances, such as a 210 percent increase in California autism from 3,864 cases in 1987 to 11,995 in 1998, the report covers intensified government interest in the toxic effects of environmental pollutants on children.