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Hypertension and Insulin Resistance: The Metabolic Link to Longevity

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Learn how hypertension and insulin resistance connect, why the link affects longevity, which biomarkers to track, and how food, movement, sleep, and treatment lower vascular risk.

High blood pressure and insulin resistance often rise together because they share the same metabolic roots: excess visceral fat, poor muscle glucose uptake, chronic inflammation, sleep disruption, kidney sodium retention, and stiffening blood vessels. Treating blood pressure as a stand-alone number misses part of the story. A person with rising blood pressure, waist gain, high triglycerides, low HDL cholesterol, fatty liver, or higher fasting insulin is often showing early metabolic strain before diabetes appears.

This matters for longevity because the damage is quiet and cumulative. Higher pressure injures the brain, kidneys, heart, retina, and blood vessel lining. Insulin resistance speeds the same process by raising glucose swings, oxidative stress, inflammation, and atherosclerosis risk. The strongest strategy is not only lowering blood pressure, but also improving the metabolic environment that keeps pushing it upward.

Table of Contents

Why Blood Pressure and Insulin Belong Together

Hypertension is not only a plumbing problem. In metabolic aging, it often reflects how the body handles fuel, salt, stress hormones, and vascular repair. Insulin resistance means muscle, liver, and fat cells respond less effectively to insulin. The pancreas compensates by releasing more insulin to keep glucose in range. Blood sugar can look normal for years while insulin runs high behind the scenes.

That higher insulin state affects more than glucose. It influences kidney sodium handling, sympathetic nervous system activity, blood vessel tone, fat storage, appetite, and inflammation. This is why blood pressure often rises alongside a larger waist, higher triglycerides, lower HDL cholesterol, fatty liver, and higher fasting glucose.

The pattern often appears in midlife. A person’s office blood pressure moves from 118/76 to 132/84. Fasting glucose stays “normal” at 94 mg/dL, but triglycerides climb to 165 mg/dL, HDL drops, waist-to-height ratio crosses 0.5, and energy dips after meals. That is not random aging. It is a metabolic signal.

Blood pressure categories vary by guideline and country. In the United States, hypertension begins at an average of 130/80 mmHg or higher. In many European guidelines, 140/90 mmHg remains the office threshold for hypertension, with lower ranges treated as elevated blood pressure based on overall risk. Home readings are often lower than office readings, so a repeated home average around 135/85 mmHg is commonly treated as equivalent to 140/90 mmHg in the clinic. The exact target belongs in a clinical plan, but the longevity lesson is simple: rising blood pressure deserves attention before organ damage appears.

Insulin resistance also explains why some people need several blood pressure medications while their habits keep working against them. Medication lowers pressure and protects organs. Metabolic repair lowers the pressure load upstream. The best results usually come from both when blood pressure is persistently high.

How Insulin Resistance Raises Blood Pressure

Insulin resistance raises blood pressure through several overlapping pathways. None acts alone. Together, they create a body state that holds more salt and fluid, narrows blood vessels, stiffens arteries, and keeps the nervous system on higher alert.

High insulin tells the kidneys to retain more sodium

Insulin has a normal role in helping the kidneys handle sodium. In insulin resistance, that signal becomes poorly matched to the body’s needs. The kidneys retain more sodium, and water follows sodium. Blood volume rises, which raises pressure inside the arteries.

This does not mean sodium affects everyone the same way. It means a metabolically strained body often becomes more salt-sensitive. A salty restaurant meal, poor sleep, alcohol, and stress can push the next morning’s blood pressure higher than expected.

The sympathetic nervous system runs hotter

The sympathetic nervous system controls “fight-or-flight” physiology: heart rate, blood vessel constriction, and stress response. Insulin resistance and hyperinsulinemia increase sympathetic activity. Sleep apnea, anxiety, chronic stress, pain, and excess alcohol amplify the same pathway.

The result is a body that acts as if it needs to defend itself. Blood vessels constrict more readily. Resting heart rate often creeps upward. Nighttime blood pressure fails to dip normally. That nighttime pattern is especially important because sleep should be a daily vascular recovery period.

Blood vessels lose nitric oxide signaling

Healthy arteries widen and relax through nitric oxide, a molecule made by the endothelium, the thin inner lining of blood vessels. Insulin normally supports nitric oxide production. In insulin resistance, this relaxing pathway weakens while constricting and inflammatory pathways gain influence.

That shift increases vascular resistance. The heart must pump against tighter vessels. Over time, the artery wall becomes less flexible, and systolic pressure rises more easily.

Visceral fat produces inflammatory signals

Visceral fat is the fat stored deep around the organs. It behaves like an active endocrine tissue, not passive storage. As visceral fat expands, it releases inflammatory signals and fatty acids that worsen insulin resistance in the liver and muscle.

A larger waist also raises the risk of fatty liver, high triglycerides, sleep apnea, and metabolic syndrome. Simple body-size tools, especially waist-to-height ratio, help reveal this risk better than weight alone.

Arteries stiffen faster

Insulin resistance, high glucose exposure, oxidative stress, and higher blood pressure all promote arterial stiffness. Stiffer arteries do not cushion each heartbeat well. Systolic pressure rises, pulse pressure widens, and the brain and kidneys receive stronger pressure waves.

This is one reason blood pressure control becomes harder with age. The issue is not only the number at one appointment. It is the long-term load placed on the arterial wall.

PathwayWhat happensCommon clues
Kidney sodium retentionMore sodium and water stay in circulationSalt-sensitive readings, ankle swelling, higher morning BP
Sympathetic activationBlood vessels constrict and heart rate risesHigher resting heart rate, stress spikes, poor sleep
Endothelial dysfunctionArteries lose some ability to relaxRising systolic BP, erectile dysfunction, low exercise tolerance
Visceral fat inflammationInflammatory signals worsen insulin resistanceLarger waist, fatty liver markers, high triglycerides
Arterial stiffnessPressure waves hit organs harderWider pulse pressure, higher systolic BP with age

Why This Link Matters for Longevity

Hypertension and insulin resistance shorten healthspan by damaging small vessels and large arteries at the same time. The small vessels feed the brain, kidneys, retina, nerves, and heart muscle. The large arteries deliver blood under pressure to the whole body. When both systems face high pressure and poor metabolic signaling, aging becomes more injury-prone.

The brain is one of the clearest examples. Long-term hypertension increases the risk of stroke, small vessel disease, white matter damage, and cognitive decline. Insulin resistance adds glucose variability, inflammation, and vascular dysfunction. Protecting brain aging therefore requires more than avoiding diabetes. It requires steady blood pressure, better insulin sensitivity, and attention to sleep, movement, and vascular risk. The connection is especially relevant for anyone tracking hypertension and white matter health in midlife.

The kidneys also sit directly in the pressure-metabolism crossfire. High blood pressure damages the tiny filtering units of the kidneys. Insulin resistance increases the likelihood of albumin leakage, fatty liver, diabetes, and vascular inflammation. A basic kidney screen often includes estimated glomerular filtration rate, called eGFR, plus urine albumin-to-creatinine ratio. Normal creatinine alone does not always catch early kidney strain.

The heart adapts to high pressure by thickening its main pumping chamber. At first, this helps the heart push against resistance. Over time, thickened heart muscle becomes stiff, oxygen-hungry, and more vulnerable to rhythm problems and heart failure. Insulin resistance adds triglyceride-rich lipoproteins, inflammation, and higher risk of coronary artery disease.

The liver belongs in this discussion too. Fatty liver strongly tracks with insulin resistance and often travels with hypertension. Mildly elevated ALT or AST, high triglycerides, abdominal weight gain, and prediabetes point toward the same metabolic load. A deeper look at fatty liver and metabolic longevity fits naturally when blood pressure and insulin markers rise together.

Longevity-focused prevention starts before severe disease. Waiting for diabetes, a heart attack, stroke, or kidney decline wastes years when the pattern is easier to change. A blood pressure cuff, waist measurement, lipid panel, A1c, fasting glucose, fasting insulin, and urine albumin test reveal much of the story early.

Measure the Pattern, Not Just One Number

Single readings mislead. Blood pressure changes with caffeine, pain, stress, exercise, alcohol, sleep, conversation, bladder fullness, and cuff size. Metabolic markers also shift with illness, fasting duration, training load, and recent meals. Better decisions come from repeated measures that show a pattern.

Measure blood pressure correctly at home

Home readings often give a clearer picture than rushed office readings. Use an upper-arm cuff that fits your arm. Sit with back supported, feet flat, arm supported at heart level, and rest quietly for five minutes before measuring. Avoid caffeine, nicotine, exercise, and a large meal for about 30 minutes beforehand.

A useful home protocol is simple:

  1. Measure twice in the morning and twice in the evening.
  2. Leave one minute between readings.
  3. Track readings for 7 days.
  4. Ignore day 1 if it looks unusually high from learning the routine.
  5. Average the remaining readings.

A structured guide to home blood pressure measurement helps prevent common errors, including cuffs that are too small, unsupported arms, crossed legs, and measuring while talking.

Ambulatory blood pressure monitoring adds another layer. A 24-hour monitor records daytime and nighttime pressure during normal life. It helps detect white-coat hypertension, masked hypertension, and poor nighttime dipping. These patterns matter because nighttime blood pressure often predicts vascular risk more strongly than a single office reading. People with inconsistent readings, high morning pressure, suspected sleep apnea, or organ-risk concerns often benefit from 24-hour blood pressure monitoring.

Pair blood pressure with insulin-resistance markers

Blood pressure becomes more meaningful when viewed with metabolic markers. The goal is not to chase perfect numbers. The goal is to identify a pattern early enough to act.

MarkerWhy it helpsCommon concern pattern
Fasting glucoseShows current fasting blood sugar100–125 mg/dL suggests prediabetes
A1cEstimates average glucose over about 3 months5.7%–6.4% suggests prediabetes
Fasting insulinShows how much insulin is needed to hold glucoseHigh-normal glucose with high insulin suggests compensation
Triglycerides and HDLReflect lipid traffic and insulin sensitivityHigh triglycerides with low HDL suggests metabolic strain
Waist and waist-to-height ratioShows central fat patternRatio above 0.5 often signals higher cardiometabolic risk
ALT, AST, and FIB-4Screen for fatty liver and fibrosis riskPersistent elevations deserve follow-up
Urine albumin-to-creatinine ratioDetects early kidney vessel stressAlbumin leakage signals higher vascular risk

Fasting insulin is not always part of routine care, but it adds useful context. A1c and fasting glucose can look acceptable while insulin is high. A broader view of A1c, fasting glucose, and fasting insulin helps separate early compensation from truly healthy glucose control.

Some people need more than fasting labs. HOMA-IR estimates insulin resistance from fasting glucose and fasting insulin. An oral glucose tolerance test shows how the body handles a glucose challenge over time. A mixed-meal test shows a more real-world response to food. These options are covered in more detail in HOMA-IR, OGTT, and mixed-meal testing.

The triglyceride-to-HDL ratio is not a diagnosis, but it is a helpful signal. High triglycerides and low HDL often reflect insulin resistance, excess refined carbohydrate intake, excess alcohol, poor fitness, fatty liver, or genetic lipid patterns. A closer look at the TG:HDL ratio gives useful context when blood pressure is rising.

Food Moves That Lower Pressure and Insulin Demand

A good blood pressure diet is also a good insulin-sensitivity diet when it is built around whole foods, enough protein, high-fiber carbohydrates, healthy fats, and a strong sodium-potassium balance. The goal is not punishment or extreme restriction. The goal is to lower the amount of insulin and pressure the body needs to manage ordinary meals.

Build meals around protein, plants, and slow carbohydrates

A practical plate starts with protein, non-starchy vegetables, high-fiber carbohydrates when appropriate, and a healthy fat source. Protein helps preserve muscle during weight loss and aging. Vegetables, legumes, intact whole grains, berries, nuts, seeds, and fermented foods support glucose control and gut health.

Better carbohydrate quality matters more than carbohydrate fear. Lentils, beans, oats, barley, potatoes cooled and reheated, berries, and whole grains behave differently from sweet drinks, pastries, white bread, and large bowls of refined starch. The same grams of carbohydrate create different glucose and insulin responses depending on fiber, food structure, meal order, portion size, and activity after eating.

For a person with hypertension and insulin resistance, breakfast often sets the tone. A protein-rich breakfast with Greek yogurt, eggs, tofu, cottage cheese, fish, or legumes tends to produce steadier glucose than a low-protein breakfast based on juice, cereal, toast, or pastries. Adding fiber and fat slows digestion further.

Use sodium reduction and potassium increase together

Sodium reduction helps many people lower blood pressure, especially when insulin resistance, kidney strain, older age, or obesity increases salt sensitivity. The largest sodium sources are usually packaged foods, restaurant meals, processed meats, salty snacks, breads, sauces, and fast food.

Potassium supports healthier blood pressure by helping balance sodium’s effect and supporting vessel relaxation. Food sources include beans, lentils, potatoes, sweet potatoes, tomatoes, spinach, yogurt, beet greens, squash, avocado, and many fruits. People with kidney disease or medications that raise potassium need clinician guidance before intentionally increasing potassium.

A strong approach looks like this:

  • Cook more meals from basic ingredients.
  • Replace salty sauces with herbs, vinegar, lemon, garlic, spices, and yogurt-based dressings.
  • Choose beans, lentils, vegetables, and potatoes more often.
  • Use minimally processed protein sources most of the time.
  • Check labels on bread, soup, cheese, deli meat, sauces, and frozen meals.

Reduce liquid sugar and alcohol first

Sweet drinks are one of the fastest ways to worsen insulin demand. Soda, sweet tea, fruit juice, energy drinks, sweet coffee drinks, and frequent smoothies deliver rapidly absorbed sugar without much chewing or fullness.

Alcohol also deserves attention. It raises blood pressure in a dose-related pattern, disrupts sleep, increases appetite, worsens triglycerides in susceptible people, and makes late-night eating more likely. Blood pressure often improves within weeks when regular alcohol intake drops sharply.

Use time-restricted eating carefully

Time-restricted eating helps some adults reduce late-night snacking, improve meal structure, and lower calorie intake. The safest version for blood pressure and insulin resistance usually means a consistent overnight fast, earlier meals, and no large late dinner. A 12-hour eating window is a reasonable starting point. Some people move to 10 hours if it improves appetite and glucose patterns.

Longer fasting is not automatically better. People who take blood pressure medication, insulin, sulfonylureas, SGLT2 inhibitors, diuretics, or multiple prescriptions need medical guidance before longer fasts. Dehydration and electrolyte shifts can cause dizziness, low blood pressure, falls, or kidney stress.

Training, Muscle, and Daily Movement

Muscle is the largest glucose-storage organ in the body. Improving muscle quality lowers insulin demand, raises glucose disposal, improves blood pressure control, and protects independence with age. Exercise is not only calorie burning. It changes how cells handle fuel.

Strength training improves the metabolic sink

Resistance training helps muscles pull glucose from the bloodstream and store it as glycogen. It also supports resting metabolic rate, joint function, bone health, and frailty prevention. Two to four weekly sessions work well for most adults when recovery is respected.

A complete session includes the main patterns:

  • Squat or sit-to-stand pattern
  • Hip hinge pattern
  • Push pattern
  • Pull pattern
  • Carry or core bracing pattern
  • Calf and grip work when useful

Start with loads that allow clean technique. Most sets should stop with 1–3 good reps still available. Progress by adding repetitions, sets, load, or range of motion gradually. The metabolic value comes from repeatable training, not from soreness.

People new to lifting, older adults, and those with high blood pressure should avoid breath-holding strain during hard efforts unless coached. Exhale through effort, use controlled tempos, and avoid sudden maximal lifts when blood pressure is uncontrolled. The article on strength training and insulin sensitivity expands on programming for metabolic healthspan.

Zone 2 training improves fuel use

Zone 2 cardio is steady work that feels sustainable. Breathing deepens, but conversation remains possible in short sentences. Brisk walking uphill, cycling, rowing, swimming, and elliptical training all work.

This type of training improves mitochondrial function, fat oxidation, capillary density, and glucose handling. A practical target is 120–180 minutes per week, split across 3–5 sessions. Beginners can start with 20 minutes twice weekly and build from there.

Zone 2 is not a replacement for blood pressure treatment, but it improves the metabolic terrain that affects pressure. A detailed approach to Zone 2 dosing for insulin sensitivity helps match intensity with recovery.

Post-meal movement gives fast returns

A 10- to 20-minute walk after meals lowers post-meal glucose and insulin demand. It also reduces sitting time, improves digestion, and often lowers stress. This habit is especially powerful after the largest carbohydrate meal of the day.

The movement does not need to be formal exercise. Walking the dog, light cycling, stairs, housework, or a relaxed outdoor walk all count. The best version is the one repeated most days.

Weight loss helps, but body composition matters

A 5%–10% weight loss often improves blood pressure, fasting glucose, triglycerides, fatty liver, sleep apnea risk, and insulin sensitivity. For a 220-pound person, that means 11–22 pounds. Bigger losses are not always needed to see meaningful metabolic improvements.

The target is fat loss while preserving or gaining muscle. Crash dieting, very low protein intake, and long stretches without resistance training often reduce muscle. That weakens glucose disposal and makes maintenance harder. Pairing a moderate calorie deficit with protein, strength training, walking, and sleep protects the long-term result.

Sleep, Stress, Medications, and Safety

Blood pressure and insulin sensitivity worsen quickly when sleep and recovery fall apart. The body treats poor sleep as a stress signal. Cortisol rises, hunger increases, glucose control worsens, and sympathetic tone stays elevated.

Screen for sleep apnea when clues appear

Sleep apnea is common in people with hypertension, insulin resistance, larger neck circumference, central weight gain, loud snoring, morning headaches, daytime sleepiness, or nighttime urination. It is also common in people who do not fit the stereotype, including women after menopause and adults who are not severely overweight.

Sleep apnea repeatedly drops oxygen levels and triggers adrenaline surges during the night. Blood pressure stays higher, especially at night and in the morning. Treating sleep apnea often improves blood pressure control, energy, glucose regulation, and exercise capacity.

Clues that deserve testing include:

  • Loud snoring with pauses or gasping
  • Morning headaches
  • Dry mouth on waking
  • Resistant hypertension
  • High morning blood pressure
  • Daytime sleepiness despite enough time in bed
  • Atrial fibrillation or frequent nighttime urination

Stress raises pressure through real biology

Stress is not only a mood issue. Rumination, financial strain, caregiving, trauma, pain, and workplace pressure activate the nervous system and stress hormones. Some people respond by eating late, drinking alcohol, skipping training, sleeping poorly, and overusing caffeine. Blood pressure then reflects both the stress response and the coping pattern.

Useful stress tools are practical, not mystical. A 10-minute walk after a difficult call, slower breathing before bed, a hard stop for work email, strength training, social contact, and therapy for persistent anxiety all change physiology. The right tool lowers the body’s threat signal and supports the habits that lower insulin demand.

Medication is organ protection, not failure

Persistent hypertension deserves medical treatment when lifestyle alone does not bring readings to a safe range. Blood pressure medications reduce stroke, heart failure, kidney disease, and cardiovascular events. Using medication while improving insulin sensitivity is often the most protective path.

Common medication classes include ACE inhibitors, angiotensin receptor blockers, calcium channel blockers, thiazide-like diuretics, mineralocorticoid receptor antagonists, and beta blockers. Each has specific use cases, benefits, side effects, and monitoring needs.

Some medications interact with metabolic health. Thiazide diuretics can raise glucose or uric acid in some people, especially at higher doses, though they remain valuable and evidence-based. Beta blockers differ in metabolic effects and are essential for specific heart conditions. ACE inhibitors and angiotensin receptor blockers are often favored when kidney protection, diabetes, or albuminuria are part of the picture. Medication choice belongs with a clinician who sees the full risk profile.

Metabolic medications also enter the picture for some adults. Metformin, GLP-1 receptor agonists, dual incretin therapies, SGLT2 inhibitors, lipid-lowering therapy, and obesity medications all have specific roles in selected patients. The goal is not to collect prescriptions. The goal is to match treatment to risk: blood pressure, glucose, kidney markers, body composition, lipids, liver fat, and cardiovascular history.

Know when blood pressure needs urgent care

Very high readings need context. Recheck after sitting quietly. Make sure the cuff fits. If blood pressure remains around 180/120 mmHg or higher, contact urgent medical services, especially if symptoms appear.

Emergency symptoms include chest pain, severe shortness of breath, weakness on one side, confusion, fainting, severe headache unlike usual, vision changes, trouble speaking, or new neurologic symptoms. Do not try to treat a possible emergency with fasting, supplements, sauna, cold plunges, or extra exercise.

A Longevity-Focused Action Plan

The most effective plan lowers pressure and insulin demand at the same time. It does not require perfection. It requires a sequence that turns vague concern into measurable progress.

Step 1: Confirm the blood pressure pattern

Track home blood pressure for 7 days using a consistent protocol. Record morning and evening averages, heart rate, sleep quality, alcohol, exercise, and unusual stress. Bring the log to a clinician if readings are repeatedly elevated.

Ask about ambulatory monitoring if office and home readings disagree, morning readings are high, nighttime hypertension is suspected, or medication decisions feel unclear.

Step 2: Get the metabolic baseline

A useful baseline often includes:

  • A1c
  • Fasting glucose
  • Fasting insulin
  • Lipid panel with triglycerides and HDL
  • ApoB or non-HDL cholesterol
  • ALT, AST, and platelet count for liver context
  • eGFR and urine albumin-to-creatinine ratio
  • Uric acid when gout, kidney risk, or metabolic syndrome is present
  • Waist circumference and waist-to-height ratio

Repeat the most relevant markers after 8–12 weeks of focused changes. Blood pressure often improves quickly. A1c moves more slowly because it reflects roughly 3 months of glucose exposure.

Step 3: Choose the highest-return food changes

Start with the changes that affect both pressure and insulin:

  1. Remove sweet drinks and reduce desserts to planned portions.
  2. Build breakfast around protein and fiber.
  3. Replace refined starches with legumes, intact grains, potatoes, fruit, and vegetables.
  4. Reduce restaurant and packaged food sodium.
  5. Increase potassium-rich whole foods if kidney function and medications allow.
  6. Limit alcohol, especially on weeknights.
  7. Stop eating 2–3 hours before bed most nights.

Do not change everything at once. A consistent breakfast, post-meal walk, and lower-sodium dinner pattern often beats a dramatic plan that lasts 10 days.

Step 4: Move after meals and train the large muscles

Use two movement layers. First, walk 10–20 minutes after one or two meals daily. Second, train strength 2–3 times weekly. Add Zone 2 cardio as capacity improves.

A simple week looks like this:

  • Monday: full-body strength plus 10-minute dinner walk
  • Tuesday: 30–45 minutes Zone 2
  • Wednesday: post-meal walks only
  • Thursday: full-body strength
  • Friday: 30 minutes Zone 2 or brisk hills
  • Saturday: longer walk, hike, cycling, or active chores
  • Sunday: mobility, easy walk, meal prep, sleep reset

This plan works because it is repeatable. It improves glucose disposal daily and builds muscle over months.

Step 5: Protect sleep and treat apnea

Set a stable wake time, get outdoor light early, reduce alcohol, keep late meals smaller, and create a caffeine cutoff. Test for sleep apnea when symptoms or resistant blood pressure suggest it. Better sleep often makes food control and training easier within days.

Step 6: Use medication when risk is already high

Lifestyle changes are powerful, but they do not erase the need for medication when blood pressure remains high. Organ protection matters now, not after the perfect routine arrives. A clinician can adjust treatment as weight, sleep, fitness, sodium intake, and metabolic markers improve.

Step 7: Track outcomes that matter

Good tracking avoids obsession. Pick a small dashboard:

  • Weekly average home blood pressure
  • Resting heart rate
  • Waist measurement every 2–4 weeks
  • Steps or walking minutes
  • Strength sessions completed
  • Alcohol-free nights
  • A1c, fasting glucose, fasting insulin, triglycerides, HDL, and kidney markers every few months when appropriate

The goal is a downward trend in pressure, waist, triglycerides, fasting insulin, and glucose variability while strength, fitness, sleep, and energy improve.

Hypertension and insulin resistance are not separate midlife problems. They are two visible sides of metabolic strain on the vascular system. Lowering blood pressure protects the brain, kidneys, and heart. Improving insulin sensitivity reduces the forces that keep pressure high. Longevity improves when both are addressed together: better measurement, stronger muscle, steadier meals, lower sodium load, better sleep, less visceral fat, and medical treatment when needed.

References

Disclaimer

This article is educational and does not replace care from a qualified clinician. Hypertension, diabetes risk, kidney disease, sleep apnea, and medication decisions need individualized assessment. Seek urgent medical care for very high blood pressure with chest pain, shortness of breath, neurologic symptoms, fainting, severe headache, or vision changes.