Complex sentence: In 1998, he received the Joseph Goldberger Award in Clinical Nutrition from the American Medical Association, and was appointed, six years later, a Fellow of the American Society for Nutrition in recognition of his distinguished career in nutrition.
Split into simpler sentences: In 1998, he received the Joseph Goldberger Award in Clinical Nutrition from the American Medical Association. Six years later, he was appointed a Fellow of the American Society for Nutrition in recognition of his distinguished career in nutrition.