A new study this week in The American Journal of Clinical Nutrition is relevant to an ongoing vindication process for saturated fats, which turned many people away from dairy products such as whole milk, cheese, and butter in the 1980s and ’90s. An analysis of 2,907 adults found that people with higher and lower levels of dairy fats in their blood had the same rate of death during a 22-year period. The implication is that it didn’t matter if people drank whole or skim or 2-percent milk, ate butter versus margarine, etc. The researchers concluded that dairy-fat consumption later in life “does not significantly influence total mortality.”“I think the big news here is that even though there is this conventional wisdom that whole-fat dairy is bad for heart disease, we didn’t find that,” says Marcia de Oliveira Otto, the lead researcher of the study and an assistant professor of epidemiology, human genetics, and environmental science at the University of Texas School of Public Health. “And it’s not only us. A number of recent studies have found the same thing.”