Darwin officially published his theories in On the Origin of the Species in 1859. He knew his views would be controversial, especially with those who believed heavily in religion. His first edition of the book did not talk much about human evolution, but did hypothesize that there was a common ancestor for all life.
Dietician and nutritionist. It is safe to eat two or three serves of canned or fresh tuna or salmon a week. While pregnant women are advised to avoid eating a lot of fish that is high in mercury, tuna is generally considered to be low in mercury.f you usually enjoy eating a lot of fish, try to balance out the types of fish you have. Combine fresh tuna, sardines, pilchards and trout, with fish that have lower levels of pollutants, such as haddock, red snapper, ling or flathead. Read our full article on eating fish during pregnancy.
This is because tuna contains more mercury than other types of fish. The amount of mercury we get from food isn't harmful for most people, but if you take in high levels of mercury when you're pregnant, this could affect your baby's developing nervous system.