When does morning sickness ease?

Women during pregnancy will show different degrees of morning sickness reaction, pregnancy 6 weeks or so began to show morning sickness reaction, to 8 to 10 weeks after pregnancy, morning sickness reaction will be reduced, continued to 12 weeks after pregnancy morning sickness reaction disappeared. But not absolute, because individual constitution is different, morning sickness reaction began to show time, duration, and the degree of morning sickness reaction is individual differences. Some morning sickness reaction duration is very short, but some will continue throughout pregnancy. Some morning sickness reaction is mild, diet conditioning can be improved. Some serious can not eat, will affect normal life, need to go to the hospital for treatment.