Fried chicken, french fries, and chicken-fried steak is surely delicious, but treating yourself to such fried foods regularly could be deadly, a new study warns.
Women who eat more than 1 serving a week of fried chicken or fried fish have an increased risk of heart disease and death, researchers report.
“Overall, we found that total fried food consumption is related to higher risk of all-cause death, and also death from cardiovascular disease,” said senior researcher Dr. Wei Bao, assistant professor of epidemiology with the University of Iowa’s College of Public Health.
The results are not surprising “given the association of fried food to weight gain and obesity, as well as elevation of cholesterol and triglycerides,” said Dr. Guy Mintz, director of cardiovascular health and lipidology at Northwell Health’s Sandra Atlas Bass Heart Hospital in Manhasset, New York, who was not part of the study.
“Poor decisions lead to poor outcomes. We have the opportunity to help ourselves live healthier and longer with lifestyle changes,” Dr. Mintz said. “It is time we own what we eat and realize our dietary choices have consequences.”
For the study, Dr. Bao and his colleagues relied on data from the Women’s Health Initiative, a long-running federally funded study focused on heart disease, cancer, and other health problems in postmenopausal women.
Nearly 107,000 women between ages 50 and 79 were quizzed on their diets and other health problems. These women enrolled in the study between Ys 1993 and 1998, and researchers followed them up to February 2017.
During those 20 years, 31,588 women died, including 9,320 heart-related deaths, 8,358 cancer deaths, and 13,880 deaths from other causes.
The researchers found that women who ate a lot of fried foods also had other problems that could affect their heart health, Dr. Mintz said.
Fully 33% of participants who ate 1 or more fried meals per week were obese, as were 44% of the patients who consumed more than 1 fried food meal per day, Dr. Mintz noted.
“More than 50% of these patients achieved less than the recommended 150 mins of exercise per week,” Dr. Mintz continued. About 40% of the patients were former smokers.
But even after researchers controlled for these risk factors, fried foods were independently associated with an increased risk of death:
- Women who ate 1 or more servings a day had an 8% higher risk of death compared with those who did not eat fried food.
- One or more servings of fried chicken a day was linked to a 13% higher risk of death from any cause and a 12% higher risk of heart-related death.
- One or more servings of fried fish or shellfish a day was linked to a 7% higher risk of death from any cause and a 13% higher risk of heart-related death.
The researchers found no evidence linking fried food to an increased risk of cancer death, and the study did not prove a cause-and-effect link between fried foods and early death.
The findings were published on 23 January in the BMJ.
Even though the study focused on women, Dr. Bao said it’s very likely that men would be similarly affected by a diet heavy in fried foods.
Obesity probably plays a part in the increased risk of death, he said. Women who ate fried food regularly had a much larger daily calorie intake than those who did not eat fried food.
But other factors could play a role as well, Dr. Bao said. People in Spain often eat fried foods, but a previous study found that fried foods were not associated with an increased risk of death in that country, he noted.
Spanish fried food lovers regularly use olive oil for their frying, and more often they cook their fried foods in their own kitchens, Bao explained. By comparison, people in the United States tend to eat fried foods from restaurants, where they are often cooked in deep fryers using peanut or canola oils.
“The frying process at home could be different from the frying process away from home,” Dr. Bao said. “A notable thing is when we fry at home, we do not reuse the oil many times.”
In the meantime, people should not downplay the affect high fat intake has on heart health, said Dr. Satjit Bhusri, a cardiologist with Lenox Hill Hospital in New York City, who was not part of the study.
“Heart attacks occur from cholesterol plaques building up in the coronary arteries,” Dr. Bhusri said. “Consuming fats from fried food directly impacts the burden of this disease. A cholesterol plaque rupture in the artery will cause a heart attack.
“This study emphasizes that there is no ‘maybe’ fried food and fat have a direct relation to heart disease,” he said.
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