Selenium

A lack of selenium can negatively affect fertility levels. 

Symptoms of a deficiency may also include muscle weakness and mental fog. Not getting the correct amount of selenium can impact immunity and cause fatigue.

Those at particular risk of a deficiency are people with thyroid disorders or a weak immune system. A selenium deficiency can also appear during pregnancy.

Most pregnant women should be able to get an adequate amount of selenium from a healthy, balanced diet. 

However, in some countries, including Scotland, Denmark and Germany, where soil selenium levels are low, an additional supplement may be beneficial.

Although selenium supplements are considered safe to use in pregnancy, it is important to consult your midwife or GP before taking them.