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Complete Heart Health Guide
Understanding your cardiovascular system and how to keep it healthy
🫀 How Your Heart Works
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Your heart beats 100,000 times per day, pumping 7,500 liters of blood
Blood Flow Through the Heart
1
Deoxygenated Blood Returns
Blood from body enters right atrium through vena cava
Blood is low in oxygen and high in carbon dioxide from body cells
2
Right Ventricle Pumps
Blood moves to right ventricle, then pumped to lungs
Tricuspid valve opens, blood flows into right ventricle
3
Lungs Oxygenate Blood
In lungs, CO2 is released, oxygen is absorbed
Pulmonary arteries carry blood to lungs. Alveoli exchange gases
4
Oxygenated Blood Returns
Fresh blood returns to left atrium through pulmonary veins
Blood is now rich in oxygen and ready to serve the body
5
Left Ventricle Pumps
Strongest chamber pumps blood to entire body
Left ventricle is 3x thicker than right, generates high pressure
6
Aorta Distributes
Aorta branches into arteries reaching every organ
Arteries branch into capillaries, delivering oxygen to cells
💓 Heart Rate Zones
Resting
Heart rate when sitting quietly
Lower is better (athletes: 40-60 bpm)
60-100 bpm
Fat Burn
Light activity, walking
Burns fat as primary fuel
50-60% max HR
Cardio
Moderate activity, jogging
Improves cardiovascular fitness
60-80% max HR
Peak
Intense activity, sprinting
Maximum calorie burn, builds speed
80-90% max HR
Max Heart Rate Formula: 220 - Your Age. Example: 30 years old → Max HR = 190 bpm
⚠️ Heart Disease Risk Factors
📈Modifiable
High Blood Pressure
Forces heart to work harder. Normal: <120/80 mmHg
🧪Modifiable
High Cholesterol
Builds plaque in arteries. LDL <100, HDL >60 mg/dL
🚬Modifiable
Smoking
Damages blood vessels, doubles heart disease risk
🩸Modifiable
Diabetes
High blood sugar damages blood vessels over time
⚖️Modifiable
Obesity
BMI >30 increases heart disease risk by 30%
🪑Modifiable
Sedentary Lifestyle
Physical inactivity doubles heart disease risk
😰Modifiable
Stress
Chronic stress raises blood pressure and inflammation
👨👩👦Non-modifiable
Family History
Risk increases if father/brother <55 or mother/sister <65
✅ 10 Ways to Improve Heart Health
1
🏃 Exercise 150 min/week
Brisk walking, cycling, or swimming. Even 10-min walks help.
2
🥦 Eat More Vegetables
5+ servings daily. Rich in antioxidants, fiber, and potassium.
3
🌾 Choose Whole Grains
Brown rice, oats, quinoa. Reduces cholesterol and blood sugar.
4
🐟 Eat Fatty Fish
2-3 servings/week. Salmon, mackerel, sardines for omega-3.
5
🧂 Reduce Sodium
Less than 2,300mg/day. Avoid processed foods.
6
🚭 Quit Smoking
Risk drops 50% within 1 year of quitting.
7
🍷 Limit Alcohol
Max 1 drink/day for women, 2 for men.
8
🧘 Manage Stress
Meditation, yoga, deep breathing. Chronic stress damages arteries.
9
😴 Get Quality Sleep
7-9 hours. Poor sleep increases heart disease risk by 48%.
10
🏥 Regular Checkups
Monitor blood pressure, cholesterol, blood sugar yearly.
🥗 Heart-Healthy Foods
🐟
Salmon
Omega-3 reduces inflammation
🥣
Oats
Beta-glucan lowers cholesterol
🫐
Berries
Antioxidants protect arteries
🥜
Nuts
Healthy fats, vitamin E
🫒
Olive Oil
Monounsaturated fats
🫘
Beans
Fiber, potassium, folate
🍫
Dark Chocolate
Flavonoids improve blood flow
🥬
Leafy Greens
Nitrates lower blood pressure
🥑
Avocado
Potassium, healthy fats