Selenium and Hashimoto’s Thyroiditis

Hashimoto’s disease is an autoimmune disease. It is a disease that causes underactive thyroid (hypothyroidism). The body’s own immune-system cells attack the cells of the thyroid gland and gradually break them down and destroy them. This, of course, has a detrimental effect on thyroid gland function and on important metabolic processes in the body.

Selenium and thyroid gland function
The thyroid gland regulates energy metabolism, heart rate, breathing, digestion, body temperature, mental activity, and other body processes. Adequate selenium intake is necessary for thyroid hormone production.

Hashimoto’s is a bit tricky. In its early development and progression, there may not be any obvious symptoms. Eventually, such symptoms as fatigue and lethargy and weight gain will make themselves manifest. Hashimoto’s thyroiditis is a debilitating disease. It lessens a person’s quality of life. It tends to affect women more than men.

Of all the organs in the body, the thyroid gland has the highest concentration of selenium. It is a greedy organ with respect to selenium. An adequate intake of selenium can lessen the severity of hypothyroidism symptoms and is associated with lowered levels of autoimmune thyroid peroxidase antibodies. read more

Maternal Selenium Status and Offspring Risk of Autism and ADHD

A healthy pregnancy. Selenium is an essential trace element needed to support a healthy pregnancy. However, to date, studies of the mother’s selenium status and the child’s growth and development are scarce. Data from the Odense Child Cohort study in Denmark give researchers an opportunity to investigate the possible effects of the mother’s low selenium intake and low selenium status on the child’s neuro-development [Demircan 2023; Demircan 2024].

Dannebrog - Denmark's flag
Denmark is a country with selenium-poor soil and selenium-poor crops and fruits. The estimated mean daily intake of selenium in Denmark is 48 mcg/day with a 5th percentile intake of 27 mcg/day [Larsen 2004].
The pregnant women enrolled in the Odense Child Cohort study had borderline selenium deficiency status. Their serum selenium levels ranged from 57 to 75 mcg/L [Demircan 2024]. For the sake of comparison, note that Alexander & Olsen propose 110 mcg/L as an optimal selenium saturation level [Alexander & Olsen 2023]. read more