I worked in medical research for a while. I was just a lowly technical assistant with a bachelor's degree, not a doctor or PhD.
But wow, it was eye opening. In the hunt for grant money, folks with letters after their names will massage that data and "reframe" the questions in myriad ways chasing desired outcomes.
Fortunately, peer review tears some of that bullshit apart. So, science works when done correctly. But, the replication crisis looms large, and I am skeptical of a lot of research papers and science journalism to this day.