Blood sugar level In humans, glucose is the primary source of energy, and is critical for normal function, in a number of tissues, particularly the human brain which consumes approximately 60% of blood glucose in fasted, sedentary individuals. Glucose can be transported from the intestines or liver to other tissues in the body via the bloodstream. Cellular glucose uptake is primarily regulated by insulin, a hormone produced in the pancreas. Glucose levels are usually lowest in the morning, before the first meal of the day, and rise after meals for an hour or two by a few millimoles. Blood sugar levels outside the
Blood lead level lead use in gasoline, petrol, paint, soldering material and other products. In the United States, average BLLs measured among tens of thousands of subjects declined from 12.8 to 2.8 µg/dL between 1976 and 1991. In the 1990s, BLLs of children in Australia were measured to be 5 µg/dL, and 9 µg/dL in Barcelona, Spain. In the United States, blood lead levels remain highest for children, for people in urban centers, for people of lower socioeconomic status, and for minorities. Exposure to lead occurs through ingestion, inhalation, and dermal contact. Lead enters the bloodstream through exposure and elevates blood lead level