In general, an MD (Doctor of Medicine) degree is pursued after completing an undergraduate degree in a pre-medical or science-related field, such as biology or chemistry. The exact prerequisites may vary by country and institution, but typically include coursework in biology, chemistry, physics, and sometimes social sciences.
Clinical psychology and food & nutrition, while important fields of study, may not cover all the required science coursework needed to apply for medical school. However, this doesn't necessarily mean you can't pursue an MD.
You would need to check with the specific medical schools you're interested in to see what their prerequisites are. It may be necessary to take additional courses to fulfill these prerequisites if your undergraduate degree has not covered all the required areas.
In the United States, for instance, after completing an undergraduate degree, you would need to take the MCAT (Medical College Admission Test) and apply for medical school. This is followed by four years of medical school to earn an MD degree, and then a residency program in a specialized area.
Remember, the path to an MD can be highly challenging and competitive, requiring dedication, time, and resources. It's crucial to thoroughly research and consider your options before embarking on this path. If you're committed and passionate about becoming a doctor, you may be able to leverage your unique background in clinical psychology and nutrition to provide holistic and interdisciplinary care to future patients.