What is Selenium?

Selenium (Se) is a Traceelement naturally present in many foods but can also be absorbed through supplements. It is Nutrition ally essential for human health as it is crucial for reproduction, thyroid function, DNA production, and body protection from damage caused by free radicals and infections.

Selenium and Weight Loss

Thyroid gland

As mentioned above, Selenium contributes to the proper functioning of the thyroid gland. A healthy thyroid gland helps manage weight by controlling the release of hormones that affect how fats, proteins, and carbohydrates are used in the body.

More specifically, the thyroid helps regulate metabolism, that is, how the body converts food into energy, burning calories. [5], [4] According to the American Thyroid Association, people with hypothyroidism tend to have a lower basal metabolic rate (BMR) than people who do not have a thyroid problem. Because of this, the body burns calories more slowly, and a small or significant increase in body weight is likely to be observed—the more Severe the hypothyroidism, the greater the weight gain. Most of the extra weight gained in hypothyroidism is due to excessive Salt and water accumulation. An increase of 5-10 kg can be observed.

Especially in the case of hypothyroidism, the administration of Selenium Supplements.

Fat cells

Selenium plays an essential role in the hypertrophy and lipogenesis of fat cells. Some studies have shown that Serum Selenium intake.

However, the administration of Selenium alone can not lead to dramatic Changes.

Foods with Selenium

We are eating foods containing Selenium content of the food consumed by the animals.

Foods rich in Selenium are the following:

  • Brazilian pistachios
  • Cereals
  • Spaghetti
  • Seafood
  • Meat
  • Poultry
  • Eggs
  • Dairy Products
  • Bread (mainly wholemeal)

Brazil Nuts are an excellent source of this nutrient. Consuming just two a day can increase the Selenium supplement.


The amount of Selenium, a person, needs daily depends on age. Average recommended daily allowances are given in micrograms (mcg):

  • Birth up to 3 years: 15-20 mcg
  • Children 4-8 years: 30 mcg
  • Children 9-13 years: 40 mcg
  • Adolescents 14-18 years: 55 mcg
  • Adults 19-50 years: 55 mcg
  • Adults 51-70 years: 55 mcg
  • Adults 71 years and older: 55 mcg
  • Adolescents and pregnant women: 60 mcg
  • Adolescents and breastfeeding women: 70 mcg  


Regarding food, a handful of Brazilian peanuts cover the recommended daily allowance. However, combined with a Selenium supplement, it results in excessive consumption, leading to unwanted results.

Selenium and side effects

To be effective, Selenium preparation. In Severe cases, this can cause kidney or heart failure.

Excessive Selenium intake can cause:

  • Diarrhea
  • Fragile nails and hair
  • Hair loss
  • Motion sickness
  • Skin rashes
  • Teeth discoloration
  • Nervous system problems
  • Metallic taste in the mouth
  • Irritable Bowel

Summarizing all the above, it is concluded that Selenium is necessary for Several body functions. But the most important thing is that it contributes to the proper functioning of the thyroid gland and consequently helps regulate metabolism.

Intake of Selenium within acceptable limits helps to reduce body weight and significantly to reduce body fat.