Another possible mechanism, not addressed by this work, is whether increased blood lead level leads to renal damage and hence to hypertension or whether increased blood lead level leads to hypertension which then leads to renal damage.

While blood lead level has been used as an indicator of lead exposure, there is no conclusive evidence of a quantitative relationship between lead exposure and blood lead level in humans [1].

Lead is present in all natural foods.

Contribution of lead to hypertension with renal impairment.

Site-specific gasoline lead exposure accounts for 0.51 ug/dl of the blood lead decrease* In agreement with the change expected due to the decrease of 0.32 ug/s>3 in average air lead and the accepted range 1 2 for blood lead response to air lead change.

Concannon July 28, 1983 Cv control employee exposure to lead.

Concannon July 28, 1983 Cv control employee exposure to lead.

Both lead and date are significant.

MAINTENANCE PERSONNEL LEAD EXPOSURE The Maintenance worker lead dosimetry program continued through the month.

"* "Many organs and systems are adversely affected by lead.

The health hazards associated with lead/chromate. b.

The present medical surveillance program for lead needs to be upgraded to meet the requirements of the Regulation respecting Lead.

These two men are being followed In parallel observations designed to demonstrate the least incremental Increase in the concentration of lead in the atmosphere (above the usual level In Cincinnati) which will just barely induce an increase in the output of lead in the urine, (the latter being the most sensitive evidence of an Increase in the rate of absorption of lead).

Multiyear Lead Uptake, which implements the SASO lead uptake model.

There were two difficulties, an inherent belief that gasoline lead must be the source for blood lead and a lack of any within-location data to relate blood lead to gasoline lead exposusre.