Lake turnover occurs when there is a drastic change in weather and is commonly noted with the very hot water in the summer begins to cool in the spring. ... Lake turnover occurs when there is a drastic change in weather and is commonly noted with the very hot water in the summer begins to cool in the spring.
Selenium and iodine: thyroidâs natural partners. The problems which selenium deficiency can cause are made more serious when another key nutrient, iodine, is low as well. Iodine is a nutrient that is much better known for its role in thyroid health. Selenium is crucial in aiding the body to recycle iodine.
Although New Zealand soil has low levels of selenium, adverse health effects have not been detected in the residents. Selenium deficiency, defined by low (<60% of normal) selenoenzyme activity levels in brain and endocrine tissues, occurs only when a low selenium level is linked with an additional stress, such as high exposures to mercury or increased oxidant stress from vitamin E deficiency.