Nearly half of all adults have high blood pressure, but the risk is not evenly distributed. Your age, sex, race, family history, body weight, and daily habits all play a role in determining how likely you are to develop hypertension, defined as a blood pressure reading of 130/80 mm Hg or higher. Some of these factors are outside your control, while others are directly tied to choices you make every day.
How Age and Sex Shape Your Risk
Blood pressure tends to rise steadily with age, and the pattern looks different for men and women. Among adults in their early to mid-40s, men are more likely to have hypertension than women: roughly 43% of men versus 39% of women in that age range. By the early 90s, those numbers nearly converge, with about 95% of women and 90% of men affected.
The crossover happens around the early 60s. Before that point, men are more likely to have uncontrolled blood pressure. After ages 61 to 64, women overtake men, and the gap widens with time. By ages 91 to 94, 56% of women with hypertension have uncontrolled readings compared to 40% of men. Hormonal shifts after menopause are a major driver of this pattern, as the protective effects of estrogen on blood vessels diminish.
Race and Ethnicity Disparities
Black adults in the United States carry a disproportionately high burden of hypertension. CDC data shows that 48.8% of non-Hispanic Black adults have the condition, compared to 37.6% of non-Hispanic White adults and 27.9% of Hispanic adults. These gaps are not purely genetic. They reflect layers of social and economic disadvantage: less access to quality health care, fewer safe places to exercise, greater exposure to chronic stress, and higher rates of poverty, all of which compound biological susceptibility.
Poverty itself amplifies hypertension risk across every racial group, but the combination of poverty and race creates a particularly steep increase in cardiovascular disease among Black Americans. Discrimination and the chronic stress it produces have measurable effects on blood pressure regulation over time.
Family History Doubles the Risk
If one or more of your close blood relatives (a parent or sibling) developed high blood pressure before age 60, your own risk roughly doubles. A strong family history, meaning three or more relatives with early-onset hypertension, pushes that risk even higher. Genetics influence how your kidneys handle sodium, how your blood vessels respond to stress hormones, and how stiff your arteries become as you age. You can’t change your genes, but knowing your family history helps you and your doctor catch rising blood pressure earlier, when lifestyle changes are most effective.
How Sodium Raises Blood Pressure
Salt drives up blood pressure through three linked mechanisms. First, excess sodium causes your body to retain water, which expands your blood volume and forces your heart to pump harder. Second, high sodium triggers structural changes in small arteries, making them stiffer and narrower. Third, it impairs the ability of blood vessel walls to relax, reducing the flexibility that normally helps absorb each heartbeat.
Current guidelines from both the World Health Organization and the European Society of Cardiology recommend keeping sodium intake below 2 grams per day, equivalent to about 5 grams (roughly one teaspoon) of table salt. Most people consume well above that threshold, often without realizing it, because the majority of dietary sodium comes from processed and restaurant foods rather than the salt shaker.
Alcohol Consumption Thresholds
The relationship between alcohol and hypertension is nearly linear: the more you drink, the higher your risk. A large meta-analysis published in the journal Hypertension found that consuming about two standard drinks per day (24 grams of alcohol) raised hypertension risk by 11% compared to one drink per day. At three drinks daily, the increase was 22%. At four drinks, 33%.
Women appear to have a steeper dose-response curve. Up to about one standard drink per day, there was no measurable increase in risk. Above that, each additional drink raised the likelihood of hypertension more sharply than it did for men, reaching a 69% increase at four drinks daily. For context, a standard drink is roughly a 12-ounce beer, a 5-ounce glass of wine, or 1.5 ounces of spirits.
Excess Weight
Carrying extra body fat is one of the strongest modifiable predictors of high blood pressure. Fat tissue, especially around the abdomen, produces hormones and inflammatory signals that stiffen arteries, increase sodium retention, and activate the body’s stress-response system. The relationship is consistent across populations: as BMI rises, so does the prevalence of hypertension. Losing even a modest amount of weight, on the order of 5% to 10% of body weight, can produce meaningful drops in blood pressure readings for people who are overweight or obese.
Sleep Apnea and Other Health Conditions
Obstructive sleep apnea, a condition where the airway repeatedly collapses during sleep, is closely linked to hypertension. Between 30% and 70% of people with sleep apnea also have high blood pressure. Each time breathing stops, oxygen levels drop and the body releases a surge of stress hormones that constrict blood vessels. Over months and years, these repeated surges remodel the cardiovascular system and keep blood pressure elevated even during the day.
Chronic kidney disease, diabetes, and thyroid disorders also raise hypertension risk. The kidneys regulate blood volume and sodium balance, so any condition that impairs kidney function can push blood pressure upward. Diabetes damages small blood vessels and accelerates arterial stiffness, creating a feedback loop where high blood sugar and high blood pressure reinforce each other.
Medications That Can Raise Blood Pressure
Some commonly used medications contribute to high blood pressure as a side effect. Pain relievers like ibuprofen and naproxen cause the body to retain sodium and fluid. Birth control pills can raise blood pressure in some women, particularly those who already have other risk factors. Certain antidepressants, decongestants found in cold medicines, and drugs used to prevent organ transplant rejection can also push readings higher. Herbal supplements including ginseng, licorice root, and ephedra have the same potential. Stimulant drugs like cocaine and methamphetamine cause sharp, dangerous spikes.
If you take any of these regularly, periodic blood pressure monitoring is especially important. In many cases, the elevation reverses when the medication is stopped or switched.
Understanding the Blood Pressure Categories
The 2025 guidelines from the American College of Cardiology and American Heart Association define four blood pressure categories:
- Normal: below 120/80 mm Hg
- Elevated: 120 to 129 systolic with diastolic still below 80
- Stage 1 hypertension: 130 to 139 systolic or 80 to 89 diastolic
- Stage 2 hypertension: 140/90 mm Hg or higher
If your top and bottom numbers fall into different categories, the higher category applies. Elevated blood pressure is not yet hypertension, but it signals that your risk is climbing and lifestyle changes can make a real difference before medication becomes necessary. Most of the risk factors covered here are cumulative. A 45-year-old Black man with a family history of hypertension, a high-sodium diet, and untreated sleep apnea faces a far greater likelihood of developing the condition than someone with just one of those factors in isolation. The more risk factors you carry, the earlier and more aggressively it’s worth tracking your numbers.