New findings suggest that the key to a healthy heart isn’t about forgoing pasta or potatoes, or even adhering to a low-fat diet. The study’s outcomes have been published in the Journal of the American College of Cardiology.
Research indicates that healthy eating doesn’t necessitate concentrating on what to exclude from your diet, such as curbing carbohydrate or calorie intake.
Instead, the focus should be on what is actually consumed, and the quality of those ingredients.
A study that followed nearly 200,000 men and women in the U.S. for approximately 30 years revealed that some low-fat and low-carbohydrate diets are more beneficial for heart health than others.
What sets them apart?
The crucial element was the quality of the food itself, rather than the quantity of carbohydrates or fats.
Research conducted by public health specialists at Harvard University suggests that if a diet includes too many processed foods and animal proteins or fats, or if it lacks sufficient vegetables, fruits, whole grains, healthy fats, or essential macronutrients, it may not significantly impact cardiovascular health in the long run, even if it is technically low-carb or low-fat.
“Our findings indicated that it’s not simply about reducing carbohydrate or fat intake, but rather about the quality of foods people choose for their diets,” concluded the study’s lead, Harvard epidemiologist Zhijuan Wu. “Focusing solely on nutrient composition rather than food quality might not yield health benefits.”
Study participants who followed a healthy, varied diet with adequate macronutrients exhibited higher levels of “good” cholesterol in their blood, along with lower levels of fats and inflammatory markers, when compared to those with insufficient intake of these essential substances.
They also experienced a significantly reduced risk of developing coronary heart disease, the most common cause of heart attacks.
“These results suggest that healthy low-carbohydrate and low-fat diets might share common biological mechanisms that enhance cardiovascular health,” explained Wu. “Focusing on overall dietary quality can offer people the flexibility to choose eating patterns that align with their preferences while still supporting heart health.”
The obtained results are based on self-reported dietary data from participants, all of whom were healthcare professionals, a factor that might imply a higher level of health awareness and better access to medical care compared to the general population.
This does present some limitations for the study; however, the duration of follow-up, exceeding 5.2 million person-years, is impressive.
The findings add to a growing body of evidence suggesting that reducing processed food consumption and increasing the intake of whole grains and vegetables generally have the most positive impact across a wide range of health indicators.
Rigorous diets that involve counting calories, carbohydrates, or fats may not be necessary.
“This study helps to move the conversation beyond the long-standing debates surrounding low-carbohydrate versus low-fat diets. The research outcomes indicate that the quality of consumed food is paramount for heart health. Regardless of whether a diet is lower in carbohydrates or fats, emphasizing plant-based foods, whole grains, and healthy fats is associated with better cardiovascular outcomes,” state the researchers.
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