DescriptionNew York residents have benefited from rules that ban trans fat in restaurants: Rates of heart attack and stroke have dropped in New York counties where such bans have been enacted, a new study suggests.Researchers found that starting three years after the effort to restrict the use of trans fats in eating establishments was introduced, the New York counties with these restrictions experienced a 6.2 percent reduction in hospital admissions for heart attacks and strokes, compared with New York counties without similar restrictions. This translates to 43 fewer heart attacks and strokes per 100,000 adult residents (ages 25 and older) in the New York counties with trans fat restrictions, according to the study published online today (April 12) in the journal JAMA Cardiology. [9 Disgusting Things That the FDA Allows in Your Food]AdvertisementThe 6.2 percent decline in cardiovascular events found in the new study fell within the bounds of what other researchers have found in their estimates, said the study's lead author, Dr. Eric Brandt, a cardiovascular disease fellow at the Yale University School of Medicine in New Haven, Connecticut.One previous estimate, from 2009, predicted that nearly eliminating trans fat from people's diets could prevent between 6 and 19 percent of heart disease hospitalizations.However, the limitations on trans fat that the researchers looked at in this new study are not entirely comprehensive, Brandt told Live Science. The restrictions apply to trans fat in New York restaurants, bakeries, cafeterias, caterers, senior-meal programs and other food-service locations, but they do not apply to food sold in grocery stores, he said.The decline in cardiovascular events observed in this study is promising, and suggests that similar if not greater decreases in heart attack and stroke rates could be seen when the Food and Drug Administration's nationwide restriction on trans fat goes into effect in 2018, Brandt said.The FDA restrictions on trans fat will prevent manufacturers and food preparers from using partially hydrogenated oils, which contain these unhealthy fats, in foods. These measures will nearly eliminate trans fat in grocery stores and will ban them from eateries across the country.Although food companies have been gradually eliminating trans fat from their products in preparation for the FDA's ban, partially hydrogenated oils are still a part of people's diets. The oils are found in baked goods, fried foods, yeast breads, chips, crackers and margarine, the study authors wrote.