D. Mark Hegsted | |
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| Born | David Mark Hegsted March 25, 1914 Rexburg, Idaho, U.S. |
| Died | June 16, 2009 (aged 95) Westwood, Massachusetts, U.S. |
| Alma mater | University of Idaho (BS) University of Wisconsin (PhD) |
| Known for | Hegsted equation |
| Scientific career | |
| Institutions | Harvard University |
| Notable students | Alice H. Lichtenstein |
David Mark Hegsted (March 25, 1914 – June 16, 2009) was an American nutritionist who studied the connections between food consumption and heart disease. His work included studies that showed that consumption of saturated fats led to increases in cholesterol, leading to the development of dietary guidelines intended to help Americans achieve better health through improved food choices.