Heartworm Disease

descriptionOverview

Heartworm disease is caused by parasitic worms that live in the heart and pulmonary arteries, transmitted by mosquito bites. In dogs, worms grow up to 12 inches and can cause heart failure and death. In cats, even 1-2 worms can be fatal — and there is no approved treatment for cats, only prevention. It takes 6-7 months after a mosquito bite for worms to mature, so early detection requires regular testing.

searchSymptoms to Watch For

• warningMild persistent cough
• warningExercise intolerance and fatigue
• warningDecreased appetite and weight loss
• warningSwollen abdomen (from heart failure)
• warningSudden collapse or death in severe cases

restaurantHow Nutrition Helps

Nutrition doesn’t prevent or treat heartworm, but supporting heart health with omega-3 fatty acids and taurine helps the heart cope with the burden of infection. During treatment in dogs (which kills worms, creating dangerous inflammation), anti-inflammatory nutrition supports recovery. A strong immune system may reduce infection severity.

directions_runHow Activity Helps

During heartworm treatment, strict exercise restriction is mandatory — physical activity can cause dead worm fragments to block pulmonary arteries, potentially killing the dog. Post-treatment, gradual return to activity over 6-8 weeks.

verifiedPrevention Tips

• check_circleYear-round heartworm prevention medication — no exceptions
• check_circleAnnual heartworm testing for dogs
• check_circleMonthly preventives work retroactively — a missed month is dangerous
• check_circleMinimize mosquito exposure
• check_circlePrevention is far safer and cheaper than treatment