300 dpi: (k9563-1.jpg)
640 pixels wide: (k9563-1.jpg)
![]() Image Number K9563-1 |
Endocrinologist Peter Havel checks a volunteer’s blood pressure in a study of diets high in fructose or glucose. These sugars affect production of leptin and insulin, hormones that regulate appetite.
Photo by Peggy Greb.