Researcher A conducts a case-control study to explore the consumption of fruits and vegetables and the risk of endometrial cancer

Researcher A conducts a case-control study to explore the consumption of fruits and vegetables and the risk of endometrial cancer. The results of the study indicate a lower risk of cancer with vegetable consumption.
Researcher B conducts a cross-sectional study to explore the consumption of fruits and vegetables and the risk of endometrial cancer. The results of the study indicate a higher risk of cancer with vegetable consumption.
Conduct research by reading the articles and journals on endometrial cancer. Based on your research and understanding, answer the following questions:
From the research information you have at hand, what do the above mentioned two case studies tell you about the risk of endometrial cancer?
Is there any common ground covered between the two studies? If so, list and explain them. If not, provide reasons why.
What is your opinion on each study in terms of design and demographics? Which method do you think has more merit? Why?
What additional information would be needed to arrive at a conclusion?