Understanding Hypertension
Blood pressure is the force of blood pushing against the walls of your arteries. It’s recorded as two numbers:
Systolic pressure (top number): pressure when the heart beats
Diastolic pressure (bottom number): pressure when the heart relaxes between beats
Hypertension means these numbers are consistently elevated over time, not just once during a stressful day. Temporary spikes can happen with pain, anxiety, caffeine, nicotine, some medications, or even “white coat” effects in a medical setting. True hypertension is a sustained pattern.
Blood pressure rises when one or more of these factors change:
Your arteries become stiffer or narrower, increasing resistance
Your body holds onto more salt and water, increasing blood volume
Your nervous system stays in “fight-or-flight” mode more often
Your kidneys or hormones shift the body’s pressure set-point
Your heart works harder due to vascular resistance or volume
Many causes ultimately lead to the same end result: increased resistance in blood vessels and/or increased circulating volume.
Primary (Essential) Hypertension
Primary (essential) hypertension is the most common type. It doesn’t have one single, clearly identifiable cause. Instead, it develops gradually and is influenced by a mix of inherited traits and long-term habits or exposures. Genetics can influence how your kidneys handle sodium, how your blood vessels respond to stress hormones, and how stiff your arteries become with age.
Age-related vascular changes: Arteries often become less elastic over time. Stiffer arteries raise systolic blood pressure because the vessels don’t expand as easily with each heartbeat.
High-sodium, low-potassium eating patterns: Too much sodium can cause the body to retain fluid. Too little potassium can reduce the body’s ability to balance sodium and relax blood vessel walls.
Excess body weight: Extra body mass increases blood flow demand and can increase vascular resistance. It’s also linked to insulin resistance and inflammation, both of which are associated with higher blood pressure.
Sedentary lifestyle: Regular movement supports healthy vascular function, improves insulin sensitivity, and helps regulate the nervous system.
Chronic stress and poor sleep: Stress hormones and sleep disruption can increase sympathetic (“fight-or-flight”) activity and disrupt normal nighttime blood pressure dipping.
Alcohol and tobacco exposure: Alcohol can raise blood pressure in a dose-dependent way for many people, and tobacco/nicotine causes blood vessel constriction and vascular injury.
Primary hypertension is often “silent.” Many people feel fine while their blood pressure remains quietly elevated – one reason routine checkups and home monitoring can be so valuable. Primary hypertension builds over the years.
You can learn more about ongoing care options through EverHeal Medical Clinic’s primary care services and chronic condition support.
Secondary Hypertension
Secondary hypertension is high blood pressure caused by a specific, identifiable issue. Compared with primary hypertension, it may:
Appear suddenly or worsen quickly
Be more severe or harder to control
Occur at a younger age
Have clues in symptoms or lab results (not always present)
Potential causes of secondary hypertension include:
1) Kidney-related causes
Kidney disease or reduced kidney function: The kidneys regulate salt and fluid balance, as well as hormones that affect blood pressure.
Renal artery narrowing: Reduced blood flow to the kidneys can signal the body to raise blood pressure.
2) Hormonal and endocrine causes
Thyroid disorders: Both overactive and underactive thyroid function can affect heart rate, vascular tone, and blood pressure patterns. (See thyroid disorders for related care topics.)
Adrenal hormone imbalance: Certain adrenal conditions can raise blood pressure by increasing salt retention or amplifying the effects of stress hormones.
3) Sleep-related breathing disorders
Sleep apnea: Repeated drops in oxygen during sleep can activate stress pathways and increase blood pressure, especially at night and in the morning. Learn more on the sleep apnea page.
4) Medication and substance-related causes
Some prescriptions, over-the-counter medications, and supplements can raise blood pressure in certain people, especially when combined or used long-term.
How to Reduce Hypertension
Track Accurate Blood Pressure Readings
Good information leads to better decisions. Consider:
Measuring at the same time each day for a week (if advised)
Sitting quietly for a few minutes first
Keeping feet flat on the floor and arms supported at heart level
Avoiding caffeine, nicotine, and exercise right before measuring
Home readings can be especially helpful when clinic readings are elevated due to stress or timing.
Build a Blood-Pressure-Friendly Eating Pattern
Rather than chasing a perfect diet, focus on repeatable upgrades:
Prioritize vegetables, fruits, beans, and whole grains
Choose lean proteins and healthy fats
Reduce ultra-processed foods where sodium is concentrated
Watch “hidden sodium” in sauces, dressings, deli meats, and packaged snacks
If you have kidney disease or other conditions where potassium or fluid targets need to be individualized, get medical guidance before making major changes.
Move Consistently (and Start Where You are)
Blood pressure responds well to regular activity. A sustainable plan might include:
Brisk walking most days
Light resistance training during the week
More daily steps (parking farther, walking meetings, stairs when possible)
If you have joint pain or limitations, modifying movement is often possible without giving up on the goal. EverHeal Medical Clinic also offers joint pain evaluations and injections, which may help some patients stay active.
Improve Sleep Quality and Screen for Sleep Apnea
If you:
Snore loudly
Wake up gasping
Have morning headaches
Feel unrefreshed despite enough hours of sleep
Talk with a clinician about whether a sleep apnea evaluation is appropriate. Addressing sleep quality can improve both daytime energy and blood pressure patterns.
Manage Stress in a Way You Can Maintain
Stress reduction doesn’t have to be complicated. Useful options include:
Short daily breathing or mindfulness sessions
Regular outdoor walks
Strengthening social support
Structured therapy or mental health care when needed
Setting boundaries around work hours and screen time
The goal is to reduce how often your body stays in high-alert mode.
Review Alcohol, Nicotine, Caffeine, and Supplements Honestly
Small changes here can produce measurable results:
Reduce alcohol if it’s frequent or linked with higher readings
Avoid tobacco/nicotine exposure
Consider whether caffeine is driving spikes (especially later in the day)
Discuss stimulant-like supplements with a clinician
Treat Related Conditions Proactively
Conditions like diabetes, high cholesterol, thyroid disorders, and sleep apnea can contribute to overall cardiovascular strain. Managing them as part of one coordinated plan can improve outcomes and simplify next steps.
Use Medication Management When it’s Indicated
Lifestyle changes are foundational, but some people still need medication to reach healthy blood pressure targets. Medication is not a failure – it’s a tool.
Book an Appointment Today!
EverHeal Medical Clinic supports patients with ongoing medication management and lab testing as needed.
Consider scheduling an evaluation if:
Your home or clinic readings are consistently elevated across multiple days
Your blood pressure is trending upward over the months
You have a strong family history of hypertension
You’re pregnant or recently postpartum with elevated readings
You suspect sleep apnea, thyroid issues, kidney concerns, or medication effects
You have hypertension plus other conditions, such as diabetes or high cholesterol
It’s also important to seek urgent care if you have very high readings accompanied by concerning symptoms like chest pain, severe headache, shortness of breath, fainting, confusion, or sudden neurologic symptoms.
EverHeal Medical Clinic provides support through primary care services available in Los Angeles, CA.
Conclusion
So, what causes hypertension? Most often, it’s a gradual, multi-factor process shaped by genetics, aging, diet, activity level, sleep, stress, and other health conditions. Less commonly, it stems from a specific underlying cause, such as a kidney, hormonal, or sleep-related disorder.
About the Author
Dr. Ebi Rowshanshad
you first
