Irregular Rhythm Notifications: What They Mean and What to Do Next
An irregular rhythm notification from a smartwatch or fitness tracker means the device detected a pulse pattern that may resemble atrial fibrillation (AFib). It...
Is Butter Bad for Your Heart? Saturated Fat, LDL, and Practical Advice
Butter is not a heart-health “poison,” but it is a concentrated source of saturated fat, and eating a lot of it can raise LDL...
Isometric Exercises for Blood Pressure: Wall Sits, Planks, and Handgrips
Isometric exercise—contracting a muscle without much joint movement—can lower resting blood pressure when practiced regularly. Wall sits and handgrip training have the strongest direct...
Jaw, Arm, or Back Pain: When It Could Be a Heart Warning Sign
Jaw, arm, shoulder, neck, or upper-back pain can sometimes be a warning sign of reduced blood flow to the heart—even when chest pain is...
Keto Diet and Heart Health: LDL Changes, Triglycerides, and Red Flags
A ketogenic diet can improve some heart-related markers while worsening others, and the biggest source of concern is a substantial rise in LDL cholesterol...
Krill Oil vs Fish Oil for Triglycerides: Evidence, Dosing, and Cost Tradeoffs
Fish oil is the better-established choice for lowering high triglycerides, while krill oil may produce modest lipid improvements but has less evidence at clinically...
L-Arginine for Blood Pressure: Who It Helps and Who Should Avoid It
L-arginine can lower blood pressure modestly in some adults, but it is not a substitute for proven hypertension treatment and it is not appropriate...
Late-Night Eating and Blood Pressure: Why Evening Meals Can Raise Morning Readings
Late-night eating can contribute to higher morning blood-pressure readings in some people, but the relationship is not as simple as “eat after 8 p.m....
Late-Night Eating and Heart Health: Why Timing Matters More Than You Think
Late-night eating is not automatically harmful, but regularly pushing a large share of calories into the final hours before sleep may work against heart...
L-Citrulline for Blood Pressure: Nitric Oxide Benefits and Side Effects
L-citrulline may lower blood pressure by a few mmHg in some adults, especially middle-aged or older people with elevated readings, but the evidence is...
LDL Particle Size Test: What “Small Dense LDL” Means and What to Do About It
A result showing “small dense LDL” can signal a more atherogenic lipid pattern, but LDL particle size is rarely the most important number to...
Leafy Greens for Blood Pressure: Nitrates, Portion Sizes, and Easy Meals
Leafy green vegetables can support healthy blood pressure, partly because many are rich in natural nitrate that the body can convert to nitric oxide....
Lipoprotein(a) Diet: What Helps (and What Doesn’t) for High Lp(a)
If your lipoprotein(a), or Lp(a), is high, food is still important—but not because a special diet can reliably “fix” the Lp(a) number. Lp(a) is...
Low Blood Pressure: Symptoms, Causes, and When It’s a Problem
Low blood pressure is not automatically dangerous. Some healthy people naturally run around 90/60 mm Hg or even a little lower and feel completely...
Low HDL Cholesterol: Does It Matter and How to Improve It?
Low HDL cholesterol often appears on a lipid panel with a warning flag, but it is not a treatment target in the same way...
Low Heart Rate (Bradycardia): When It’s Normal and When It’s Not
A low heart rate is not automatically a heart problem. Bradycardia usually means a resting heart rate below 60 beats per minute, but many...