Heart Health: How to Protect Your Heart, Recognize Warning Signs and Reduce Your Risk

Your heart works continuously from before birth until the end of life.

Every minute, it pumps blood throughout the body, delivering oxygen and nutrients while helping remove waste products. Because the heart is essential to almost every organ, protecting cardiovascular health is one of the most important things a person can do for their overall wellbeing.

Heart disease, however, remains a major global health problem.

Cardiovascular diseases are a group of disorders affecting the heart and blood vessels. They include coronary heart disease, stroke-related blood vessel disease, peripheral arterial disease, rheumatic heart disease, congenital heart disease and other conditions.

The good news is that many cardiovascular diseases can be prevented or their risk reduced by addressing important lifestyle and medical risk factors.

That means heart health is not only about what happens when someone develops chest pain. It is also about what you do every day to protect your heart before a serious problem occurs.

What Does Heart Health Mean?

Heart health refers to keeping the heart and blood vessels functioning as well as possible and reducing the risk of cardiovascular disease.

Good heart health involves several areas:

Healthy blood pressure
Healthy cholesterol levels
Healthy blood glucose levels
Regular physical activity
Nutritious eating
Avoiding tobacco
Maintaining a healthy weight
Limiting harmful alcohol use
Getting adequate sleep
Managing stress
Having appropriate medical check-ups

There is no single food, supplement or exercise that guarantees protection from heart disease.

Instead, heart health comes from the combination of many healthy habits and appropriate medical care.

Why Heart Health Matters

Cardiovascular disease is the leading cause of death globally.

WHO reports that cardiovascular diseases caused an estimated 19.8 million deaths in 2022, with more than four out of five cardiovascular deaths resulting from heart attacks and strokes.

Importantly, cardiovascular disease is not only a problem for wealthy countries or older people.

More than three-quarters of cardiovascular disease deaths occur in low- and middle-income countries.

This makes heart health especially important in communities where people may have limited access to routine screening and treatment.

What Are the Major Heart Problems?

There are many different cardiovascular conditions.

Coronary Heart Disease

Coronary heart disease occurs when the blood vessels supplying the heart become narrowed or blocked.

A major cause is the buildup of fatty deposits inside the arteries.

Reduced blood flow can cause chest discomfort known as angina.

If a blood vessel becomes completely blocked, a heart attack can occur.

Heart Attack

A heart attack happens when blood flow to part of the heart muscle is suddenly blocked.

Without enough oxygen, heart muscle begins to become damaged.

A heart attack is a medical emergency, and treatment should not be delayed.

Heart Failure

Heart failure does not mean that the heart has completely stopped working.

It means the heart is unable to pump enough blood to meet the body's needs.

Symptoms can include:

Shortness of breath
Persistent tiredness
Swelling of the legs or ankles
Difficulty breathing when lying down
Reduced ability to exercise

Heart failure can have several causes, including coronary heart disease, high blood pressure and damage to the heart muscle.

Abnormal Heart Rhythms

An arrhythmia occurs when the heart beats too quickly, too slowly or irregularly.

Some arrhythmias are harmless, while others can be serious.

Symptoms may include:

Palpitations
Dizziness
Fainting
Shortness of breath
Chest discomfort

Anyone experiencing unexplained or recurrent symptoms should seek medical evaluation.

Heart Valve Disease

The heart contains valves that help blood flow in the correct direction.

Diseases affecting these valves can interfere with normal circulation.

Symptoms can include shortness of breath, tiredness, chest discomfort, swelling or fainting.

Congenital Heart Disease

Congenital heart disease refers to structural problems with the heart that are present from birth.

Some cases are diagnosed during childhood, while others may not become obvious until adulthood.

What Increases the Risk of Heart Disease?

Several factors can increase cardiovascular risk.

Some cannot be changed, while others can.

Age

The risk of cardiovascular disease generally increases with age.

However, heart disease can occur in younger people as well.

Family History

Having close relatives with cardiovascular disease can increase an individual's risk.

This does not mean that heart disease is inevitable.

Lifestyle and medical risk factors still matter.

High Blood Pressure

High blood pressure, also known as hypertension, can damage blood vessels over time.

The problem is that hypertension often has no obvious symptoms.

A person can feel completely healthy while having dangerously elevated blood pressure.

Regular blood pressure checks are therefore important.

High Cholesterol

Cholesterol is a fatty substance that the body needs for certain functions.

However, excessive levels of certain blood lipids can contribute to fatty deposits in arteries and increase cardiovascular risk.

A blood test can help determine cholesterol levels.

Diabetes

High blood glucose can damage blood vessels and increase cardiovascular risk.

People living with diabetes should work with healthcare professionals to manage their blood glucose and other cardiovascular risk factors.

Smoking

Tobacco use damages blood vessels and significantly increases cardiovascular risk.

Exposure to second-hand smoke can also be harmful.

Stopping tobacco use is one of the important steps a person can take to improve cardiovascular health.

Physical Inactivity

A sedentary lifestyle can contribute to overweight, high blood pressure, diabetes and other cardiovascular risk factors.

Regular physical activity helps support heart and overall health.

Unhealthy Diet

A diet high in excess salt, unhealthy fats, added sugars and highly processed foods can contribute to cardiovascular risk.

WHO identifies unhealthy diets, physical inactivity, tobacco use and harmful alcohol use among the major behavioural risk factors for cardiovascular disease.

Harmful Alcohol Use

Excessive alcohol consumption can increase cardiovascular and other health risks.

If you drink alcohol, moderation and individual medical advice are important.

How Does High Blood Pressure Affect the Heart?

High blood pressure forces the heart and blood vessels to work against greater pressure.

Over time, uncontrolled hypertension can damage blood vessels and increase the risk of:

Heart attack
Stroke
Heart failure
Kidney disease
Other cardiovascular complications

One of the biggest problems with hypertension is that it often produces no warning symptoms.

That is why checking your blood pressure is much more reliable than waiting until you feel unwell.

Heart-Healthy Eating

A heart-friendly diet does not have to mean expensive or complicated food.

The goal is to build a balanced eating pattern around nutritious foods.

Good choices can include:

Vegetables
Fruits
Beans and other legumes
Whole grains
Nuts and seeds
Fish
Lean sources of protein
Appropriate amounts of healthy fats

WHO recommends diets based largely on a variety of minimally processed and unprocessed foods, with moderation of unhealthy fats, free sugars and sodium.

Watch Your Salt Intake

Eating too much sodium can contribute to high blood pressure.

Reducing excessive salt intake can therefore support cardiovascular health.

Be careful with heavily salted processed foods, instant meals, processed meats and foods where large amounts of salt are added during preparation.

Eat More Fruits and Vegetables

Fruits and vegetables provide fibre, vitamins, minerals and other beneficial nutrients.

Aim for variety rather than relying on one "superfood."

Different colours and types provide different nutrients.

Choose Healthier Fats

Not all fats are the same.

Foods containing unsaturated fats can be part of a healthy eating pattern, while excessive intake of saturated and trans fats can increase cardiovascular risk.

Reduce Excess Sugar

Large amounts of added sugar can contribute to excess calorie intake, weight gain and metabolic problems.

Water can often be a better everyday choice than sugar-sweetened drinks.

Exercise and Heart Health

Your heart is a muscle, and regular physical activity helps support cardiovascular fitness.

Physical activity can also help manage:

Blood pressure
Body weight
Blood glucose
Cholesterol
Stress

You do not necessarily need expensive gym equipment.

Activities such as:

Walking
Dancing
Cycling
Swimming
Gardening
Climbing stairs
Recreational sports

can contribute to an active lifestyle.

If you have a medical condition or have been inactive for a long time, speak with a healthcare professional about the safest way to increase your activity.

Smoking and Heart Health

Smoking is one of the major preventable cardiovascular risk factors.

Tobacco damages blood vessels and contributes to the development of cardiovascular disease.

Stopping smoking can significantly benefit overall health.

If you currently smoke and want to quit, consider speaking with a healthcare professional or using an evidence-based smoking cessation programme.

Avoiding second-hand smoke is also important.

Stress and the Heart

Stress is a normal part of life.

However, persistent or severe stress can make it more difficult to maintain healthy behaviours and may contribute to cardiovascular risk.

People under chronic stress may sleep poorly, eat irregularly, become physically inactive or smoke and drink more.

Healthy ways of managing stress can include:

Regular physical activity
Adequate sleep
Spending time with supportive people
Relaxation techniques
Hobbies
Taking breaks
Seeking professional support when necessary

Stress management should complement—not replace—medical treatment for cardiovascular conditions.

Sleep and Heart Health

Sleep is an important part of overall health.

Consistently poor sleep can affect energy, concentration, mood and other aspects of wellbeing.

If you regularly have difficulty sleeping, snore heavily, wake up gasping or remain excessively tired during the day, discuss the problem with a healthcare professional.

Sleep disorders such as sleep apnoea can require medical evaluation and treatment.

What Are the Warning Signs of a Heart Attack?

A heart attack does not always look exactly the same in every person.

Possible symptoms include:

Pressure, squeezing or pain in the centre or left side of the chest
Pain or discomfort in one or both arms
Pain in the shoulder, back, neck or jaw
Shortness of breath
Cold sweating
Nausea or vomiting
Light-headedness
Unusual weakness or tiredness

Some people—particularly women, older adults and people with diabetes—may have less typical symptoms, such as unusual fatigue, nausea, breathlessness or back or jaw discomfort.

What Should You Do During a Suspected Heart Attack?

Do not wait for the symptoms to disappear.

A suspected heart attack requires urgent medical attention.

Contact your local emergency medical service immediately and follow the instructions provided.

Do not attempt to drive yourself to the hospital if emergency transport is available.

The faster treatment begins, the greater the opportunity to limit damage to the heart muscle.

Heart Attack Warning Signs in Women

Heart attacks can occur in both men and women.

While chest discomfort is common, women may be more likely to experience symptoms such as:

Shortness of breath
Nausea
Vomiting
Back pain
Jaw pain
Unusual tiredness

This does not mean women never experience chest pain.

The important lesson is that heart attack symptoms can vary, so unusual symptoms should not automatically be dismissed.

Heart Health and Diabetes

Diabetes and cardiovascular disease are closely connected.

Persistently elevated blood glucose can damage blood vessels and increase cardiovascular risk.

People living with diabetes should pay particular attention to:

Blood glucose control
Blood pressure
Cholesterol
Physical activity
Healthy eating
Medication adherence
Regular medical check-ups

Managing diabetes is therefore about much more than blood sugar alone.

Heart Health and Cholesterol

Cholesterol is essential for normal body function.

The problem arises when unhealthy blood lipid levels contribute to the buildup of fatty deposits inside arteries.

A healthcare professional can assess cholesterol through blood testing and determine whether lifestyle changes, medication or both are appropriate.

Do not start or stop cholesterol medication without professional guidance.

How Often Should You Check Your Heart Health?

There is no single schedule that applies to everyone.

Your healthcare professional can recommend appropriate screening based on factors such as:

Age
Family history
Blood pressure
Diabetes
Cholesterol
Smoking
Weight
Existing heart disease
Other medical conditions

Basic health checks may include:

Blood pressure measurement
Blood glucose testing
Cholesterol testing
Weight and waist assessment
Review of lifestyle habits

People with symptoms or known cardiovascular conditions may require additional tests.

Can Young People Have Heart Disease?

Yes.

Although cardiovascular disease becomes more common with age, younger people can also develop cardiovascular problems.

Risk can be influenced by:

Family history
Congenital heart conditions
High blood pressure
Diabetes
Obesity
Smoking
Physical inactivity
Certain infections or inflammatory conditions
Other medical conditions

A young age should not be used as a reason to ignore serious symptoms.

Heart Health During Pregnancy

Pregnancy places additional demands on the cardiovascular system.

Most pregnancies progress normally, but some women develop conditions such as high blood pressure during pregnancy or other cardiovascular complications.

Pregnant women experiencing chest pain, severe shortness of breath, fainting or other concerning symptoms should seek medical attention promptly.

Routine antenatal care is important for monitoring maternal and fetal health.

Simple Daily Habits for a Healthier Heart

Protecting your heart does not require perfection.

Start with practical habits:

Move regularly.
Eat more vegetables and fruits.
Choose minimally processed foods more often.
Reduce excessive salt.
Avoid tobacco.
Limit harmful alcohol use.
Maintain a healthy weight where possible.
Check your blood pressure.
Know your blood sugar and cholesterol when appropriate.
Get enough quality sleep.
Manage stress.
Take prescribed medication as directed.
Attend recommended medical appointments.
Know the warning signs of heart attack and stroke.

These habits work together rather than individually.

What About Heart Supplements?

The supplement industry often promotes products as "heart cleansers" or miracle solutions.

Be cautious.

A supplement should not replace proven approaches such as controlling blood pressure, avoiding tobacco, eating a balanced diet, exercising appropriately and taking prescribed treatment.

Some supplements can also interact with medicines or cause side effects.

Speak with a qualified healthcare professional before taking supplements specifically for heart health.

Heart Health Is About Prevention

One of the most powerful aspects of cardiovascular health is prevention.

Many major risk factors can be identified before someone develops a heart attack or stroke.

Blood pressure, blood glucose and cholesterol can be measured.

Smoking can be stopped.

Physical activity can be increased.

Diet can be improved.

Medical conditions can be treated.

These steps may seem small individually, but together they can make a meaningful difference.

WHO emphasizes early detection and appropriate management of cardiovascular risk factors as important ways to prevent cardiovascular events.

When Should You See a Doctor?

Make an appointment with a healthcare professional if you have:

Repeated chest discomfort
Unexplained shortness of breath
Frequent palpitations
Recurrent dizziness
Fainting
Swelling of the legs
Unusual fatigue
High blood pressure
High cholesterol
Diabetes
A strong family history of heart disease

Do not attempt to diagnose the cause yourself.

Some symptoms can have many different explanations, and proper evaluation is important.

When Is Chest Pain an Emergency?

Chest pain should be treated as an emergency when it is sudden, severe, persistent, or accompanied by other warning signs.

Seek emergency medical assistance immediately if chest discomfort is accompanied by:

Shortness of breath
Sweating
Nausea or vomiting
Fainting
Severe weakness
Pain spreading to the arm, shoulder, jaw, neck or back
Difficulty breathing

Do not wait to see whether the symptoms eventually disappear.

A heart attack can cause permanent heart damage, and early treatment matters.

Final Thoughts

Your heart works every day without asking for attention.

Taking care of it requires more than worrying about heart disease after symptoms appear.

Heart health begins with everyday choices and appropriate medical care.

Eat a balanced diet. Stay physically active. Avoid tobacco. Manage your blood pressure, cholesterol and blood glucose. Maintain a healthy weight where possible. Get enough sleep. Manage stress. Take prescribed medicines correctly and attend medical check-ups.

Most importantly, know the warning signs of a heart attack and seek emergency help when they occur.

Heart disease can sometimes remain silent until a serious event occurs, which is why prevention and early detection matter.

You do not need to change everything overnight.

Start with one healthy habit, make it consistent, and build from there.

A healthier heart supports a healthier life.

Medical Disclaimer

This article is intended for general educational purposes only and does not replace professional medical advice, diagnosis or treatment. If you have symptoms of a heart attack or another medical emergency, seek emergency medical care immediately. People with existing heart conditions, diabetes, high blood pressure or other medical conditions should discuss appropriate lifestyle changes and treatment with a qualified healthcare professional.