why do overweight people have high blood pressure
Hypertension, or high blood pressure, has long been associated with obesity. While obesity may contribute to several related conditions which cause hypertension, other causes may play a part. Diet and lifestyle choices which may contribute to obesity may also worsen your blood pressure. Genetics can also add to the negative effects of obesity. As noted on Nature. com, an abundance of adipose, or fat, tissue contributes to insulin resistance. The resultant increase in insulin production has several possible outcomes, including a thickening of the walls of your blood vessels. As they thicken, the walls of your vessels become more rigid. More rigid veins and arteries are less able to bend and flex to accommodate blood flow, and without your veins' ability to stretch, your blood pressure will increase. High circulating LDL and lower HDL ratios associated with obesity also contribute to plaque formation, which further narrows the blood vessels. Obesity also contributes to homocysteine, which can result in further inflammation. In a 2007 review published by the American Physiological Society, cardiac hypertrophy is noted as a common effect of obesity.
When either a cardiac chamber or the entire heart become enlarged, cardiac output increases. Cardiac output may also increase due to heightened adrenalin levels. This increase in adrenaline caused your heart to work harder. This increased activity circulates your blood circulates more quickly and increases pressure as blood flows through the limited space within your thickened, hardened blood vessels. Obesity and related conditions, such as diabetes, can also affect your kidneys and cause them to retain salt and water. When your kidneys retain water, your bodyвs blood volume increases. There is a direct correlation between blood volume and blood pressure, which is detailed by the Santa Barbara City College Department of Biological Sciences. The increase in blood volume causes an increase in venous return of blood to the heart, resulting in an increase in stroke volume. Your blood pressure then rises in response to this increase in cardiac activity. In June 2010, researchers from the Medical College of Georgia documented the connections between excess fat and sodium retention.
This causes increased sodium sensitivity in some cases and, because obesity is often linked to unhealthy dietary habits, your sensitivity to salt may be further aggravated by high salt content in your food. An excess of sodium can increase rigidity in the peripheral arteries. Your blood pressure is affected by this heightened rigidity. Hardening of the blood vessel walls due to other factors related to obesity can further compound this problem.
One in three adults in the U. S. has high blood pressure, including more than half of men and women over 55. High blood pressure slowly tears away at the human body. It can cause a series of health complications, including: Is Your Blood Pressure Too High? When doctors measure your blood pressure, they are looking for two specific numbers: the first number (systolic) indicates the pressure while the heart contracts to pump blood to the body, while the second number (diastolic) represents the pressure when the heart relaxes between beats. Causes of High Blood Pressure High blood pressure can be caused by a number of factors, including: A study by the University of Texas Southwestern Medical Center found that overweight or obese individuals were more likely to have a high systolic blood pressure.
For those with a high body mass index, being physically fit only had a small impact on their blood pressure. Only people of normal weight saw improvements in their blood pressure from being more physically fit. Thus, while physical fitness is always an important goal, researchers recommended that people with high blood pressure focus first and foremost on losing weight. Of course, having low blood pressure isnt the only important goal. Researchers remind us that adults who are obese but fit arent more likely to die from heart disease and stroke, suggesting that exercise is still a critical part of any weight loss program. A study published in the American Journal of Epidemiology found that the more a person sits around, the shorter their average life span. Women who spent six hours a day sitting had a 37 percent increased risk of dying compared to those who spent less than three hours a day being sedentary, while men had an increased risk of 17 percent.
Participants who spent a lot of time sitting and did not exercise had an even higher risk of dying (94 percent for women and 48 percent for men). Treating High Blood Pressure Prevention is the best weapon in the battle against high blood pressure. But if youre already struggling with high blood pressure, there are a number of steps you can take to manage this disease: Lifestyle Change. As explained in the University of Texas study, losing weight is one of the most effective ways to reduce your blood pressure. Exercise and cutting back on your salt intake will also contribute to better overall health. In order to lose weight and keep it off long-term, you will need to do more than diet you will need to change your habits and your relationship with food. Medication. If lifestyle change alone isnt sufficient to bring your blood pressure to a healthy level, doctors may also prescribe medication. Take steps now to get your blood pressure under control, and reap the benefits for years to come. P P P P P P P P P P P P P P P P
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