"Preliminary research" refers to the initial investigation or study conducted in order to gather basic information or knowledge about a particular subject or topic. It is usually done before conducting a more in-depth or comprehensive research.
More preliminary research suggests that chronic stress may also contribute to obesity, both through direct mechanisms (causing people to eat more) or indirectly (decreasing sleep and exercise). (health.harvard.edu)
However, the antioxidant content of pumpkin seeds has not been the focus of preliminary research in this cancer area. (whfoods.com)
For this reason, preliminary research shows that it is beneficial to protecting genes linked to cancer. (wellnessmama.com)