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"A dietitian, medical dietitian, or dietician is an expert in identifying and treating disease-related malnutrition and in conducting medical nutrition therapy, for example designing an enteral tube feeding regimen or mitigating the effects of cancer cachexia. "
- Wikipedia
Simple terms, a dietician is a person who is an expert in diet and nutrition. These people help others with diets and losing/gaining weight safely. THey are also very good with science and engineering ways to help people maintain a healthy and sustainable diet.
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