what affect high blood pressure

High blood pressure (hypertension) is affected by a mix of lifestyle habits, health conditions, and physical factors you cannot change.¹

Factors You Can Change (Modifiable)

• Diet: Eating too much salt (sodium) causes fluid retention, which raises blood pressure. A lack of potassium and eating too many saturated fats or sugars also contributes.¹²³
• Weight and Activity: Being overweight or obese puts extra strain on your heart, while a lack of regular physical activity weakens cardiovascular fitness.¹²
• Substances: Smoking or chewing tobacco narrows blood vessels, and drinking too much alcohol raises blood pressure over time.¹²³
• Stress and Sleep: Long-term stress and poor sleep or conditions like obstructive sleep apnoea can elevate blood pressure.¹²³⁴
• Medications: Certain drugs—including over-the-counter NSAIDs (like ibuprofen), decongestants, steroids, and some birth control pills—can cause spikes.¹²³

Factors You Cannot Change (Non-Modifiable)

• Age: Arteries naturally stiffen and lose elasticity as you get older.
• Family History: A genetic predisposition means high blood pressure often runs in families.
• Ethnicity: People of Black African, Black Caribbean, or South Asian descent face a higher risk.¹²³⁴

Underlying Health Conditions (Secondary Hypertension)

In some cases, high blood pressure is triggered by another medical issue, such as:¹

• Chronic kidney disease
• Diabetes
• Hormone imbalances or thyroid problems¹²³⁴

You can learn more about monitoring your numbers through the NHS High Blood Pressure Guide or explore risk factors with the British Heart Foundation.¹²If you'd like, tell me:

• Are you looking at this for yourself or someone else?
• Do you have any specific blood pressure readings in mind?

I can help explain what they mean or share ways to help manage them.

A wide range of daily habits, underlying health conditions, and fixed personal factors influence your blood pressure. These are generally split into things you can change (modifiable) and things you cannot (unchangeable).¹

Modifiable Factors (Lifestyle & Health)

• Dietary Habits: Consuming too much sodium (salt) causes your body to retain fluid, increasing pressure in your blood vessels. Conversely, a diet low in potassium (found in fresh fruits and vegetables) makes it harder to balance sodium levels.¹
• Physical Activity: A sedentary lifestyle or a lack of regular exercise leads to higher heart rates and stiffer blood vessels.¹
• Weight: Carrying excess weight or obesity forces your heart to work harder to circulate blood through your body.¹
• Alcohol and Caffeine: Drinking too much alcohol regularly can dramatically spike blood pressure, and heavy caffeine intake can cause short-term surges.¹
• Smoking and Tobacco: Nicotine temporarily spikes your blood pressure and heart rate while damaging artery walls over time.
• Sleep and Stress: Chronic stress and poor or insufficient sleep quality (such as waking up frequently or suffering from sleep apnea) keep the nervous system in a constant "fight-or-flight" state.¹
• Medical Conditions: Conditions like chronic kidney disease, diabetes, high cholesterol, and thyroid disorders frequently go hand-in-hand with high blood pressure.¹
• Medications: Certain over-the-counter and prescription drugs—including NSAIDs (like ibuprofen), decongestants, certain antidepressants, and hormonal birth control —can raise blood pressure.¹

Unchangeable Factors

• Age: Blood vessels naturally lose some of their elasticity and stiffen with age, causing numbers to creep up over time.
• Family History and Genetics: High blood pressure often runs in families, and some people inherit a genetic sensitivity to salt.
• Race and Ethnicity: Certain groups—particularly Black adults —tend to develop high blood pressure earlier in life and experience higher average readings.
• Sex: Men are statistically more prone to high blood pressure during middle age, though the risk for women increases significantly after menopause.¹

For a deeper dive into prevention and dietary changes, you can explore the guidelines provided by the National Heart, Lung, and Blood Institute (NHLBI).¹

Are you looking at this because of recent high readings, or would you like tips on how to adjust specific lifestyle habits to help lower your numbers?

High blood pressure (also called hypertension) affects your body by making your heart work harder to pump blood around your body. If it stays high for a long time, it can damage important organs, even if you don't feel unwell.

What can high blood pressure affect?

1. Heart

• Heart attack
• Heart failure
• Enlarged heart

2. Brain

• Stroke
• Memory problems
• Vascular dementia

3. Kidneys

• Kidney damage
• Kidney failure

4. Eyes

• Damage to blood vessels in the eyes
• Blurred vision
• Vision loss

5. Blood vessels

• Hardening and narrowing of arteries
• Poor circulation
• Increased risk of aneurysms

What causes high blood pressure?

Common contributing factors include:

• Eating too much salt.
• Being overweight.
• Lack of physical activity.
• Smoking.
• Drinking too much alcohol.
• Stress and poor sleep.
• Family history and getting older.
• Certain medical conditions and medications.

How can you lower blood pressure?

1. Reduce salt in your diet.
2. Eat more fruit and vegetables.
3. Exercise regularly.
4. Maintain a healthy weight.
5. Reduce alcohol.
6. Stop smoking.
7. Take prescribed blood pressure medication.

A question for you

Do you currently have high blood pressure, or are you asking because someone in your family has it?

If you know your blood pressure reading (for example, 150/95 or 170/100), tell me. I can explain what the numbers mean and how concerning they are.

Important: If your blood pressure is 180/120 or higher, repeat it after at least one minute. If it remains that high, seek urgent medical advice. If you have chest pain, severe breathlessness, weakness, confusion or sudden vision changes, call 999.