According to NHS England, the official website of the UK’s Department of Health, pregnant women should limit their intake of turbot fish to two portions a week. The reason for this is its mercury content. It is also known to have other environmental pollutants like polychlorinated biphenyls (PCB) and dioxins. Over consumption of these chemicals can be potentially dangerous for the pregnant mother as well as the unborn child. Hence, it is best to consult your doctor before having turbot regularly while you are expecting.