Heart Health

Omega-3 Heart Rhythm Risk May Depend on Dose

A large analysis found a modest increase in atrial fibrillation among high-risk patients taking larger doses, while lower-dose supplements were not tied to a clear rise in risk.

Genes May Shape LDL Response to Saturated Fat on a Low-Carb Diet

A secondary analysis of a randomized diet trial suggests inherited risk may help explain why some people experience larger cholesterol increases than others.

Traditional Navajo Meal Program Reduced Heart Failure Hospital Visits

An eight-week program combining medically tailored meals, Navajo food traditions and practical household support reduced hospital and emergency visits over 90 days.

New Packaged Foods Showed Little Sodium Reduction After FDA Targets

A preliminary analysis found no overall decline in sodium among newly introduced products in nine major food categories after the FDA issued voluntary reduction goals, though the study did not evaluate the entire food supply or what consumers actually bought.

Popular School Meals May Need a Recipe Rethink

Researchers analyzed representative recipes for common cafeteria foods as schools prepare for tighter federal limits on added sugars and sodium.

Up to 400 Milligrams of Caffeine Appears Safe for Most Adults

A new American Heart Association scientific statement finds that moderate caffeinated coffee consumption does not appear to raise cardiovascular risk for most adults, though individual responses and caffeine sources vary.

Night Owls Ate Later and Had Less Favorable Metabolic Markers

A study of New Zealand women linked evening chronotypes with later eating patterns, higher body fat and less favorable metabolic measures, but it could not show that meal timing caused those differences.

A Daily Avocado Modestly Improved One Cholesterol-Related Risk Marker

A six-month trial found a small drop in LDL particle levels, not fewer heart attacks.

Weight-Loss Drugs Bring Benefits, Trade-Offs and Unanswered Questions

A BMJ review found several obesity medications produced substantial weight loss, but evidence for quality-of-life gains and long-term health benefits remains limited for many drugs.

Exercise May Add Heart Benefits After Weight Loss

In a secondary analysis of a clinical trial, adults with severe obesity who exercised after weight loss had healthier blood-vessel markers than those using liraglutide alone.

Ultraprocessed Foods May Leave a Metabolic Mark

A large European study found blood-marker patterns linked to higher ultraprocessed food intake, but it does not prove these foods caused the changes.

Small Diet Changes May Support Health Without Raising Food Costs

A modeling study in Scottish adults found that modest swaps away from some meat and dairy could improve diet quality, support public health goals and lower food-related environmental impacts without increasing overall diet costs.

Obesity’s Heart Risks Are Changing, but They Haven’t Disappeared

A large observational study found blood pressure and cholesterol gaps have narrowed among older adults with obesity in several high-income countries, likely because of medication use.

Singapore’s Drink Labels Were Linked to Less Sugar in Shopping Carts

A before-after study found Singapore’s Nutri-Grade policy was associated with lower-sugar beverage purchases and product reformulation.

A Green Mediterranean Diet May Help Raise Folate Levels

An 18-month randomized trial suggests a plant-forward Mediterranean-style diet may interact with genetic differences in folate metabolism, but the findings do not prove that any single food can prevent disease or rewrite genes.

Fruit Juice Habits Linked to Higher Blood Pressure Risk

A long-term study found that people who drank more sugary beverages and fruit juice from childhood into adulthood were more likely to report high blood pressure as adults, while whole fruit was linked to lower risk.

Your Mouth May Help Unlock Beetroot’s Blood Pressure Effects

A short-term study found that sugary gum increased nitrite production after beetroot juice, but researchers say it is not a blood pressure strategy.

New Obesity Drug Guidance Says Medication Is Only Part of the Plan

A new American College of Physicians guideline recommends semaglutide and tirzepatide as first-line medication options for eligible adults, but says nutrition, physical activity, side effects, access and personal health goals still matter.

Lifestyle Changes for Prediabetes May Support Health Decades Later

A long-term follow-up of the Diabetes Prevention Program links intensive lifestyle changes to a lower burden of multiple chronic conditions in older age.

Moderate Drinking May Carry More Risk Than Many People Realize

A new modeling study found no overall health benefit from drinking, even at low levels, and estimated that the risk of alcohol-related harm increases as consumption rises.

What Americans Get Wrong About Diet and Cholesterol

A new survey suggests many people remain confused about how familiar foods affect blood cholesterol. The most useful advice is less dramatic than the debate often makes it sound.

Eating More Fruits and Vegetables Matters. Variety May Matter Too.

A new study found that many people who meet fruit-and-vegetable goals still consume relatively low levels of flavanols, plant compounds found in tea, apples, berries, beans and other foods.

Nutrition Labels May Not Tell the Full Story About Ultraprocessed Food

A new observational study found that health differences remained even after researchers accounted for overall diet quality, but it cannot prove that processing caused them.

Alcohol Raises Cancer Risk Even at Low Levels, Analysis Finds

A global analysis found clear links between alcohol and cancer and liver disease, while the evidence for some heart, metabolic and brain conditions was more complicated.

Tailored Meals Linked to Fewer Hospital Visits, Lower Health Care Costs

A Massachusetts Medicaid analysis suggests home-delivered, dietitian-designed meals may help some high-risk patients avoid costly medical emergencies.