When someone cuts you off in traffic, blood pressure doesn’t only soar. It is a metabolic health indicator that affects the majority of your body’s systems and determines your lifespan.
Hypertension in Dubai is often referred to as a “silent killer” that raises the chance of renal failure, heart failure, stroke, Alzheimer’s disease, reproductive health issues, and more if left untreated.
Many of the risk factors for hypertension are under our control, including dietary modifications, physical activity, medication, and more. Dr. Barbara works closely with patients across Dubai to identify these risk factors early and build a plan around them.
The article discusses the importance of blood pressure control for metabolic health, how it is linked to lifespan, and how keeping a stable blood pressure helps protect endocrine, neurological, renal, and cardiovascular health.
What is hypertension?
High blood pressure is referred to as hypertension. The force of blood against the walls of your main arteries is measured by blood pressure. It consists of two numbers:
- Systolic (the first or top number): Pressure when your heart pumps blood
- Diastolic (the second or bottom number): Pressure between heartbeats
The American College of Cardiology classify blood pressure into the following categories:
- Normal: less than 80 mm Hg diastolic and less than 120 mm Hg systolic
- Elevated (prehypertension): less than 80 mm Hg diastolic and 120–129 mm Hg systolic
- Stage 1 hypertension: 80–89 mm Hg diastolic or 130–139 mm Hg systolic
- Stage 2 hypertension: ≥140 mm Hg systolic or ≥90 mm Hg diastolic
- Hypertensive crisis: >180 mm Hg systolic and/or >120 mm Hg diastolic (see a doctor every once to avoid organ damage and possible death)
Hypertension can be primary (essential) or secondary. Primary hypertension, or persistently high blood pressure without a known cause, affects the majority of people with hypertension. A medical condition or the usage of medications (such as NSAIDs, ADHD medications, antidepressants, and decongestants) can result in secondary hypertension.
Your blood pressure usually recovers to baseline well within an hour, and short-term rises from things like an intensive workout or worry are common. When your blood pressure is continuously high—which is often verified by many readings—you are diagnosed with hypertension.
Furthermore, some persons only have raised blood pressure in medical settings, a condition known as “white coat” hypertension. According to a 2024 study published in Current Hypertension Reports, those who suffer from this have a marginally but significantly higher risk of cardiac issues and chronic hypertension. In a similar vein, disguised hypertension—a normal reading at work but increased readings elsewhere—can potentially raise the risk of cardiovascular disease, especially since it could go unnoticed compared to other types of hypertension.
How does blood pressure regulation work in the body?
Blood pressure regulation involves several systems. The body aims to keep blood pressure both low enough to prevent harm to the cardiovascular system and high enough to circulate blood (and, therefore, oxygen and nutrients) to all tissues and organs.
Your blood vessels’ baroreceptors serve as the main monitoring mechanism. These sensory receptors continuously check for variations in pressure, and if they find any, they alert your nervous system to take action.
If blood pressure drops, for example:
- The sympathetic nervous system, which triggers your “fight or flight” reaction, instructs the adrenal glands to release norepinephrine and adrenaline. These hormones raise blood pressure by speeding up the heartbeat, narrowing blood vessels, and forcing more blood into arteries.
- The renin-angiotensin-aldosterone system (RAAS), a hormonal mechanism that aids in blood pressure regulation, is triggered by the kidneys. Angiotensin II, which narrows the walls of tiny arteries and promotes the release of vasopressin and aldosterone, is produced by the system’s enzyme reaction. The body retains more water as a result of these hormones telling the kidneys to hold on to more salt, which raises blood pressure and volume.
The parasympathetic nervous system slows the heart rhythm and the kidneys release more water and salt when blood pressure goes too high.
Causes and top risk factors for hypertension
Being aware of your lifestyle and genetic factors for hypertension might help you take charge of your heart health. Primary and secondary hypertension have different risks.
Primary (essential) hypertension
Primary hypertension has no known cause. However, a number of risk factors are thought to have a role in its development.
- Genetics: Although we don’t know which genes are to blame, some research suggests that heredity may affect blood pressure by 30 to 70 percent.
- Age: Due to the arteries’ natural hardening and stiffness, blood pressure, particularly systolic pressure, tends to rise with age. We also grow more sensitive to salt as we get older, and eating salt can affect blood pressure.
- Obesity: As body mass index (BMI) rises, so does blood pressure. The kidneys seem to be compressed by obesity, which activates the RAAS and causes the kidneys to retain more fluid and salt. Additionally, it can cause other inflammatory chemicals to be released.
- Sex: Women are more likely to have high blood pressure after menopause, whereas males are more likely to develop it before the age of 55. The decrease in estrogen is probably the reason why over 75% of women over 60 experience hypertension. Vasodilation, or the widening of blood vessels, is facilitated by estrogen’s increased synthesis of nitric oxide, which facilitates blood flow.
- Salt intake: Consuming a lot of salt can raise blood pressure; the American Heart Association (AHA) 1,500 mg daily, but official dietary guidelines restrict intake to 2,300 mg. Over time, the sodium in salt narrows your blood arteries and makes your heart pump more blood. High salt and low potassium intake were found to be independently associated with elevated blood pressure in the INTERSALT research.
- Physical inactivity: Living a sedentary lifestyle can narrow blood arteries, making it difficult for the heart to pump blood. Additionally, it can cause weight gain and insulin resistance, which can lead to increased inflammation, salt and water retention, and narrowed blood vessels.
- Alcohol and tobacco use: Alcohol causes the kidneys to release excessive amounts of potassium and magnesium, narrows blood vessels, and overactivates the sympathetic nervous system, all of which contribute to hypertension. In a similar vein, smoking can enhance sympathetic nervous system activity and narrow blood vessels.
- Stress: Stress triggers the “fight or flight” reaction, which raises blood pressure and releases chemicals that narrow blood vessels. This may eventually lead to hypertension.
- Sleep: The normal decline in blood pressure that occurs during sleep may be prevented by sleep disturbances (such as sleep apnea and shift work) or inadequate sleep. A decrease in this “nocturnal dipping” is associated with an increased risk of cardiovascular issues, according to research.
- Socioeconomic level: Research has shown that in high-income nations, hypertension is more common among those with lower incomes and levels of education.
- Caffeine: In the short term, coffee and other caffeinated drinks can raise blood pressure. Long-term usage, however, doesn’t seem to be detrimental and could possibly improve heart health.
- Anxiety: By triggering the sympathetic nervous system, anxiety can also sharply raise blood pressure. Anxiety increases the risk of hypertension, and long-term stress can cause hypertension.
Secondary hypertension
The best doctors for high blood pressure Dubai offers can help identify the following common reasons for secondary hypertension:
- Kidney disease
- Sleep apnea
- Endocrine conditions like Cushing syndrome and primary aldosteronism
- Aortic coarctation (narrowed aorta)
- High blood pressure during pregnancy is known as preeclampsia.
- Frequent usage of nonsteroidal anti-inflammatory medications
Why blood pressure matters for longevity and metabolic health
High blood pressure and your health are closely connected, since it impacts exercise tolerance, cognitive function, and vision, and raises health risks while frequently showing no signs until conditions worsen.
Cardiovascular system
When specific risk factors and age are considered, the Framingham Heart Study (a long-term study on cardiovascular risk factors in more than 15,000 people from three generations) discovered that prehypertension increases cardiovascular disease risk, whereas hypertension doubles heart failure risk in men and triples it in women.
The endothelium, the thin layer of cells lining blood arteries, is harmed by hypertension. Atherosclerosis, or the accumulation of plaque in arterial walls, and vascular aging, or an acceleration of the arteries’ normal aging process, can result from this hardening of the arteries. The left ventricle of the heart may grow as a result of high blood pressure over time, making it work harder and increasing the risk of arrhythmias and heart failure.
Brain
Stroke and memory issues might result from hypertension. Every 10 mm Hg increase in systolic blood pressure raises the risk of both ischemic and hemorrhagic stroke by around 25% because high blood pressure can produce clots that limit blood flow to the brain.
Additionally, hypertension destroys the brain’s white matter and tiny blood vessels, which might result in cognitive loss. Regardless of the duration of hypertension, a 2020 research of over 7,000 persons in Brazil discovered that high blood pressure exacerbated memory deficits in middle-aged adults and older adults.
Additionally, by producing inflammation, damaging brain blood vessels, changing the blood-brain barrier’s function, and interfering with the removal of amyloid-β, the primary component of plaques whose accumulation is linked to Alzheimer’s, hypertension may contribute to Alzheimer’s disease. An 18% and 25% higher risk of Alzheimer’s is linked to midlife stage 1 and stage 2 systolic hypertension, respectively.
Kidneys
Hypertension is the second-leading cause of kidney failure worldwide, contributing to 30 percent of new cases. Damage to endothelial cells in renal blood arteries and increased sympathetic nervous system activity can decrease blood flow to the kidneys, depriving them of the nutrients they require to operate. To exacerbate the situation, hypertension can set off a vicious cycle in which an overactive RAAS makes the kidneys retain more fluids and salt, which raises blood pressure even more.
Eyes
The arteries in the eyes repeatedly tighten and narrow as a result of uncontrolled hypertension. This can lead to hypertensive retinopathy, a disorder that damages the retina over time. Macular swelling, which can result in impaired vision or even loss of central vision, is a severe consequence of fluid accumulation from leaky blood vessels in the retina. Furthermore, blood flow to the optic nerve may be slowed by hypertension, raising the risk of glaucoma. Diabetic retinopathy and vision loss are additional risks for those with diabetes and hypertension.
Metabolic health
Insulin resistance, poor glucose metabolism, and an increased risk of Type 2 diabetes are common in patients with hypertension. However, it’s unclear which leads to which or whether they are separate outcomes of the same bodily disorder. By making the kidneys retain more sodium, triggering the sympathetic nervous system, and allowing calcium to accumulate in smooth muscle cells (which insulin typically helps control), insulin resistance can result in hypertension.
On the other hand, hypertension can lead to insulin resistance by reducing the amount of insulin that reaches the cells in skeletal muscle and affecting blood vessel dilatation. Higher-than-normal amounts of aldosterone, a hormone that can worsen insulin resistance and reduce the pancreas’ capacity to release insulin, may also be present in people with hypertension.
Furthermore, two indicators of metabolic syndrome, a collection of disorders that increase the risk of heart disease and stroke, are excessive blood sugar and hypertension.
Because endothelial dysfunction and oxidative stress are common in obese individuals, hypertension and dyslipidemia (high blood fat levels) usually co-occur. Nitric oxide, a chemical that helps lower blood pressure by dilating blood vessels, is produced less often as a result of oxidative stress.
However, similar to insulin resistance, it might be difficult to determine which disease emerged first, and the link is probably reciprocal.
Gut health
According to recent studies, hypertension changes the gut microbial makeup and the gut barrier, resulting in a decrease in beneficial bacteria and an increase in pathogenic bacteria. Conversely, gut dysbiosis can cause oxidative stress, RAAS activation, and increased inflammation, all of which can lead to hypertension. Additionally, it may cause the production of metabolites such trimethylamine N-oxide, which is associated with artery hardening and a higher risk of stroke and heart attack.
Reproductive health
Male fertility and both male and female sexual pleasure may be impacted by high blood pressure.
Men with hypertension may have a lower sperm count and semen volume (making it more difficult to conceive), as well as a higher prevalence of erectile dysfunction than normotensive men, since damaged penile blood vessels cannot expand as well.
Women with hypertension may have increased genital discomfort, less frequent orgasms, and less vaginal lubrication. Loss of smooth muscle and hardness of the clitoral arteries can result from hypertension’s reduction of blood flow to the clitoris and vagina. Vaginal dryness may result from the clitoris’s inability to relax and expand during sexual stimulation.
Exercise and mobility
Exercise capacity has been found to be reduced by up to 30% in people with hypertension, mainly because of decreased diastolic function. You might get tired more quickly or experience dyspnea, which would prevent you from engaging in physical activities at a level suitable for your age. Even professional athletes exhibit this impact.
Additionally, fragility and a higher risk of falls in older persons are linked to hypertension. muscular deterioration brought on by inflammation and the generation of catabolic cytokines raises the likelihood of sarcopenia, or the loss of muscular mass and strength.
How can you manage blood pressure?
Hypertension treatment in Dubai starts with the right actions and care, and although high blood pressure can have disastrous effects on the body, it can be controlled and even reversed.
Lifestyle modifications
High blood pressure treatment Dubai doctors recommend begins with lifestyle changes as the first step, and the AHA agree that this should come before other options. The most popular ones are listed below.
- Diet: Cutting less on salt is beneficial for the majority of persons with high blood pressure. After a week of transitioning from a high-sodium diet (adding 2,220 mg sodium daily to participants’ regular meals) to a low-sodium diet (500 mg sodium daily), a 2023 research observed an average decline of 8 mm Hg in systolic blood pressure. Additionally, the DASH (Dietary Approaches to Stop Hypertension) diet significantly lowered systolic blood pressure by 6.74 mm Hg and diastolic blood pressure by 3.54 mm Hg, according to a meta-analysis of randomized controlled studies. The DASH diet restricts foods rich in sugar and saturated fat and emphasizes vegetables, fruit, whole grains, low-fat and fat-free dairy products, fish, poultry, beans, nuts, and vegetable oils.
- Exercise: Physical exercise can improve blood pressure in several ways, including contributing to weight loss and improved blood vessel functioning. One review study of 270 randomized controlled trials found decreases in blood pressure with two weeks or more of different exercise programs. According to AHA, you should strive for at least 150 minutes per week of moderate-intensity aerobic exercise or 75 minutes of intense aerobic activity, and moderate- to high-intensity muscle-strengthening activity at least two days per week.
- Weight control: According to a meta-analysis of 25 studies, a net weight loss of around 11 pounds achieved by calorie restriction, increased physical activity, or both decreased diastolic blood pressure by 3.57 mm Hg and systolic blood pressure by 4.44 mm Hg. Smaller losses, meanwhile, can also aid in the control of hypertension. To develop a plan that suits you, see a qualified dietician or your healthcare professional.
- Sleep: The AHA advises individuals to maintain a regular sleep pattern and get seven to nine hours of sleep every night. You have the best chance of controlling your blood pressure and avoiding hypertension when you do this.
- Alcohol and tobacco: It’s ideal to abstain from alcohol if you have hypertension, although reducing back can also be beneficial. People who typically consume more than two drinks a day can lower their blood pressure by consuming less alcohol, according to a study of 36 studies involving over 2,800 participants. If they reduced their alcohol consumption by half, those who drank more than six drinks a day had the biggest drops in blood pressure. This also applies to smoking. Participants in a 12-week cessation program in Thailand saw a 3.1 mm Hg drop in diastolic blood pressure and a 5.0 mm Hg drop in systolic blood pressure.
Medication
A hypertension clinic in Dubai, such as the practice run by Dr. Barbara, usually prescribes medication if lifestyle changes don’t lower blood pressure. The following are first-line therapies for hypertension:
- Thiazide diuretics: They promote the evacuation of water and electrolytes, including sodium, and inhibit their reabsorption. Blood pressure is lowered when the body has less salt.
- Angiotensin-converting enzyme (ACE) inhibitors: These prevent the conversion of angiotensin II, a hormone that narrows blood arteries, by blocking the angiotensin-converting enzyme.
- Angiotensin II receptor blockers (ARBs): They lessen the effects of angiotensin II and relax blood vessels by preventing it from binding to its receptor in the body.
- Calcium channel blockers: They slow the heart’s beating and blood pumping by preventing calcium from entering its cells.
A high BP doctor Dubai residents visit may recommend a different medicine if the first one doesn’t reduce blood pressure. However, because of their high likelihood of adverse effects, ACE inhibitors and ARBs are not usually taken together. A third or even fourth drug may be taken if the first two don’t work. Over 70% of individuals with primary hypertension undergoing therapy will eventually require at least two prescription drugs.
The bottom line
High blood pressure raises the risk of heart disease, cognitive decline, visual difficulties, and other conditions that may make it more difficult for you to maintain an active lifestyle and engage in your favorite daily activities. While heredity plays a role in blood pressure, you may lower high blood pressure and lower your risk of problems by altering your diet, increasing your level of physical activity, managing stress, and cutting back on alcohol and cigarettes.
Book hypertension consultation in Dubai with Dr. Barbara to begin seeing your healthcare practitioner on a regular basis to check your blood pressure and, if required, develop a treatment plan to enhance your long-term health.