What does too much mercury do in pregnancy?

If you come in contact with high levels of mercury during pregnancy, it can cause real problems for you and your baby. Mercury can damage many parts of your body, including your lungs, kidneys and nervous system (that includes the brain, spinal cord and nerves). It also can cause hearing and vision problems.

How does mercury affect an unborn baby?

Methylmercury (MeHg) is an organic form of mercury that can damage the developing brains of human fetuses. Women who consume methylmercury during pregnancy can bear children who have neurological issues because methylmercury has toxic effects on the nervous system during embryonic development.

How much mercury is dangerous in pregnancy?

Pregnant women should: Limit to one serve (150g) per fortnight – billfish (swordfish, broadbill and marlin) and shark (flake), with no other fish eaten in that fortnight.

Can mercury cause birth defects?

In humans, the research data are not clear. Some studies have suggested that high levels of mercury may cause infertility while other studies have not. There is no information suggesting that a father’s exposure to methylmercury can cause birth defects or learning difficulties in his children.

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What happens if mercury levels are too high?

Long-term exposure to high levels of methylmercury causes effects primarily on the nervous system. Symptoms of long-term high level methylmercury exposure include disturbances in vision, hearing and speech, as well as tingling and numbness in fingers and toes, lack of coordination and muscle weakness.

Can too much mercury cause miscarriage?

Studies have shown that heavy metals like lead (Pb), cadmium (Cd), and mercury (Hg) have toxic effects on reproductive outcome and are also associated with miscarriages [21]. Skeletal lead can be mobilized from bone during pregnancy and passed on from mother to the fetus [22].

Which fish has lowest mercury?

Five of the most commonly eaten fish that are low in mercury are shrimp, canned light tuna, salmon, pollock, and catfish. Another commonly eaten fish, albacore (“white”) tuna has more mercury than canned light tuna.

What is the safe limit for mercury?

The RfD expresses the amount of mercury that can be safely consumed per unit of body weight, each day. The RfD is 0.1 microgram of methylmercury per kilogram of body weight per day.

What happens if you eat too much fish during pregnancy?

In pregnancy, eating too much fish can raise a child’s obesity risk, study says. Fish is rich in Omega-3 fats that are good for fetal brain development. But a woman who eats too much fish during pregnancy may tip her child toward obesity, especially if the baby is a girl, says a new study.

How long does mercury stay in the body?

Mercury does not stay in the body forever. It takes about six months to a year to leave the bloodstream once exposure stops. Some researchers think mercury can permanently damage the nervous system in children.

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