According to scientists, morning sickness may have evolved out of necessity.
Reports show it may be the body's way of preventing women from consuming unhealthy food.
There is proof that nausea and vomiting in pregnancy is related to high intake of sugar, alcohol, oils and meat.
Munching on cereal is least likely to trigger the sickness.
The work of The University of Liverpool's 56 studies in 21 countries can be read in the Royal Society's Biological Journal.
Morning sickness had been thought to be simply a symptom of hormonal changes during pregnancy. However, new research suggests morning sickness can have positive consequences and even reduce the risk of miscarriage.
Researchers theorize the child-bearing human body may have carried the dislike for high levels of toxins.Read the entire article here.
Update: If you have ever had severe morning sickness that endangers your own health or that of your unborn child, you might want to know about this.