For generations, cholesterol has carried the burden of blame for heart disease, but a cardiologist is now redirecting our attention toward a quieter and more pervasive threat. Dr. Dmitry Yaranov argues that sugar — particularly the kind concealed within everyday processed foods — poses a greater and more immediate danger to cardiovascular health than cholesterol. Backed by 2025 research linking even modest daily sugar intake to dramatically elevated risks of heart disease, stroke, and diabetes, his warning asks us to reconsider not just what we eat, but what we have been taught to fear.
Cardiologist warns sugar poses greater heart risk than cholesterol
Over one million new heart disease cases and 2.2 million type 2 diabetes diagnoses occur globally annually due to high sugar consumption.
The silent saboteur operates in plain sight
Mark
So Dr. Yaranov is saying sugar is worse than cholesterol for your heart. Is that actually what the research shows, or is he overstating it?
Mimi
The research he's citing does show sugar has significant independent effects on heart disease risk—the 17 to 23 percent increases are real findings from 2025 studies. But "worse than" is a bit of a simplification. Both matter. Cholesterol is still a risk factor; sugar is just getting less attention than it deserves.
Luke
Right, and I want to flag something: those percentages are relative risk increases, not absolute risk. An 18 percent increase sounds dramatic, but it depends on your baseline risk. Also, the JAMA study he mentions—that's about people consuming 25 percent of calories from sugar, which is extreme. Most people aren't there.
Mark
Fair point. But the hidden sugar thing—that's real, right? People genuinely don't know how much they're eating?
Mimi
Absolutely. A protein bar marketed as healthy might have 12 grams of sugar. A bottle of flavored yogurt, 20 grams. A tablespoon of ketchup, 4 grams. It adds up fast, and most people don't track it.
Luke
The American Heart Association guidelines—6 teaspoons for women, 9 for men—that's about 25 and 36 grams respectively. A single can of soda blows past that. So the gap between recommendation and reality is real.
Mark
What about the people who exercise? Dr. Yaranov says even they're at risk. Does exercise not protect you from sugar's effects?
Mimi
Exercise is protective for many things, but it doesn't override a high-sugar diet. You can't out-exercise poor nutrition. The inflammation and glucose disruption happen regardless of how fit you are.
Luke
Though I'd note: the source doesn't give us the specific studies behind those claims about inflammation and blood pressure. We know sugar affects those things, but the exact mechanism and magnitude—that's worth being cautious about.
Mark
So what's the practical takeaway? Just avoid sugar entirely?
Mimi
Not entirely—that's unrealistic. But being intentional about it, reading labels, and understanding where it hides. The recommendation is moderation, not elimination.
Luke
And honestly, the biggest win for most people would be cutting out sugary drinks and ultra-processed foods. That alone would probably get most people closer to the guidelines.
Le Pouls
- A single daily serving of added sugar raises heart disease risk by 18% — and that risk climbs even among people who exercise and believe they are living healthfully.
- Over one million new heart disease cases and 2.2 million type 2 diabetes diagnoses occur globally each year, tied directly to high sugar consumption — a toll that rivals many recognized public health crises.
- Sugar operates through multiple pathways at once: fueling inflammation, raising blood pressure, degrading cholesterol profiles, and destabilizing glucose control — all while hiding in foods marketed as nutritious.
- Most people consume two to three times the American Heart Association's recommended daily sugar limit without knowing it, because added sugars are embedded in sauces, snacks, and so-called health foods.
- Dr. Yaranov is urging a fundamental shift in how people protect their hearts — away from a singular focus on cholesterol and fat, toward active, label-conscious vigilance about sugar.
For generations, cholesterol has carried the burden of blame for heart disease, but a cardiologist is now redirecting our attention toward a quieter and more pervasive threat. Dr. Dmitry Yaranov argues that sugar — particularly the kind concealed within everyday processed foods — poses a greater and more immediate danger to cardiovascular health than cholesterol. Backed by 2025 research linking even modest daily sugar intake to dramatically elevated risks of heart disease, stroke, and diabetes, his warning asks us to reconsider not just what we eat, but what we have been taught to fear.
For decades, cholesterol has occupied the villain's seat in conversations about heart disease. Dr. Dmitry Yaranov, a cardiologist, is challenging that long-held assumption. In recent public remarks, he has argued that sugar — especially the hidden kind embedded in processed foods — represents a more immediate and widespread threat to cardiovascular health.
The research he cites is difficult to dismiss. Data from 2025 shows that just one daily serving of added sugar correlates with an 18% increase in heart disease risk, rising to 21% with two or more servings — a finding that holds even for people who exercise regularly. Globally, high sugar consumption is linked to more than one million new heart disease cases and 2.2 million new type 2 diabetes diagnoses each year. The risks extend further: a 23% increase in coronary artery disease and a 9% rise in stroke. One study published in JAMA Internal Medicine found that people deriving 25% or more of their daily calories from sugar faced more than double the risk of dying from cardiovascular disease compared to those keeping consumption below 10%.
The mechanism goes well beyond empty calories. Sugar drives inflammation, elevates blood pressure, worsens cholesterol, and disrupts the body's glucose regulation — a compounding assault on both heart and pancreas. What makes it especially dangerous is its invisibility. Most people associate sugar with sodas and desserts, but added sugars are quietly present in sauces, snacks, and foods positioned as healthy choices. The American Heart Association recommends no more than six teaspoons daily for women and nine for men — thresholds most people exceed by two to three times without realizing it.
Dr. Yaranov's message is clear: heart health requires more than watching cholesterol. It demands deliberate attention to sugar — the silent saboteur operating in plain sight, inside the foods people believe are part of a reasonable diet.
A cardiologist is warning that the real threat to your heart may not be what you think it is. For decades, cholesterol has occupied the villain's seat in conversations about cardiovascular disease. But Dr. Dmitry Yaranov, a heart specialist, is pushing back against that narrative. In recent public remarks, he has argued that sugar—particularly the hidden kind tucked into processed foods—poses a more immediate and widespread danger to heart health than cholesterol ever did.
The evidence he points to is striking. Research from 2025 shows that consuming just one serving of added sugar daily correlates with an 18 percent increase in heart disease risk. Add a second serving, and that risk climbs to 21 percent. What makes this finding especially sobering is that it holds true even for people who exercise regularly and otherwise consider themselves health-conscious. The global toll is enormous: more than one million new cases of heart disease annually, along with 2.2 million new diagnoses of type 2 diabetes, are linked to high sugar consumption. Beyond heart disease itself, the numbers extend to coronary artery disease, where sugar intake raises risk by 23 percent, and stroke, where the increase is 9 percent.
One study published in JAMA Internal Medicine crystallized the danger in starker terms. People who drew 25 percent or more of their daily calories from sugar faced more than double the risk of dying from cardiovascular disease compared to those consuming less than 10 percent. The mechanism, according to Dr. Yaranov, is not simply about empty calories. Sugar fuels inflammation throughout the body, raises blood pressure, worsens the cholesterol profile, and disrupts the body's ability to control glucose—a dual assault on both the heart and the pancreas.
What makes sugar particularly insidious is its invisibility. Most people think of sugar as something found in sodas and desserts, but the real problem lies elsewhere. Added sugars hide in sauces, snacks, protein bars, and foods marketed as healthy. A person checking labels carefully might discover they are consuming two to three times the recommended daily amount without realizing it. The American Heart Association sets the limit at six teaspoons per day for women and nine for men—targets that most people exceed substantially.
Dr. Yaranov's message is direct: protecting your heart requires more than managing cholesterol and fat intake. It demands vigilance about sugar, particularly the kind that does not announce itself on the package. He urges people to read labels carefully, understand where sugar is hiding, and make deliberate choices about consumption. The silent saboteur, as he describes it, operates in plain sight—in the foods people believe are part of a reasonable diet. Recognizing that threat, and acting on it, has become essential to cardiovascular health.
Citations marquantes
Sugar fuels inflammation, raises blood pressure, worsens cholesterol, and disrupts glucose control—a double hit for both the heart and the pancreas— Dr. Dmitry Yaranov
Check your labels. Limit it. Protect your heart and your blood sugar— Dr. Dmitry Yaranov
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