One of the most outstanding effects of Cannabis is its ability to quell nausea. Because of this, it is the first line of defense against losing your cookies for hungover peeps everywhere. Cannabis is also used during other times where nausea occurs such as after some medications and of course, nausea that occurs with many pregnancies.
Research definitely exists here most notably, The Jamaica Study by Dr. MC Dreher. However, with legality and lack of education it's been difficult to do such a study in North America.
"We are asking you to take part in a research study because we are trying to learn more about the impact of COVID-19 on currently or previously pregnant and breastfeeding women who use cannabis to manage health."