When pollution is caused by nutrients and fertilizers, this is called nutrient pollution, and it leads to an overproduction of algae and other aquatic plants. This overabundance of plants and algae causes problems, because they cover the water surface and prevent sunlight from reaching the plants underwater.
Reverse T3 is actually an antithyroid -- T3 is the active thyroid that goes to the cells and stimulates energy and metabolism. Reverse T3 is a mirror image -- it actually goes to the receptors, sticks there, and nothing happens. So it blocks the thyroid effect. Reverse T3 is kind of a hibernation hormone, in times of stress and chronic illness, it lowers your metabolism.
For example, if your free T4 is within normal range and the free T3 is low, then this can be an indicator of a high RT3. But of course the best method is to actually order the RT3 blood test.o you definitely donât want the Reverse T3 to be too high. Because it blocks the conversion of T4 to T3, a high Reverse T3 is more common in people with hypothyroidism and Hashimotoâs Thyroiditis, although every now and then I do see these levels high in some people with hyperthyroidism and Gravesâ Disease.