What causes hypertension (high BP), how to avoid it

Blood pressure can simply be defined as the pressure exerted by blood on the blood vessels when it moves. High blood pressure or hypertension happens when the blood moves through the arteries at a higher pressure than normal.

Many different factors can cause hypertension and if the blood pressure is too high or stays high for a long time, it can cause serious health issues. Uncontrolled hypertension puts you at a higher risk of stroke, heart disease, heart attack and kidney failure.

High blood pressure can be of two types: Primary hypertension and secondary hypertension.

Primary hypertension, also known as the most common type of hypertension, takes many years to develop and is resulted from lifestyle, environment and how the body changes as per the age.

Secondary hypertension is caused by health problems such as kidney issues, sleep apnea, thyroid, etc.

Symptoms:
The disease is called "a silent killer" as there are no symptoms for high blood pressure. Some may experience headaches, nosebleeds, or shortness of breath. While these may indicate various things, they also occur once the blood pressure has reached a dangerously high level over a period of time.

Causes:
Common factors that may cause high blood pressure are:

• A diet high in salt, fat, and/or cholesterol.
• Chronic conditions such as kidney and hormone problems, diabetes, and high cholesterol.
• Family history, especially if one's parents or other close relatives have high blood pressure.
• Lack of physical activity.
• Older age (the older you are, the more likely you are to have high blood pressure).
• Overweight and obesity.
• Race (non-Hispanic black people are more likely to have high blood pressure than people of other races).
• Some birth control medicines.
• Stress.
• Tobacco use or drinking too much alcohol.

Diagnosis:
The initial diagnosis of blood pressure is done by a blood pressure monitor where the doctor or the nurse places a band around your arm that is attached to a small pump and a meter.  

The two readings found determines the blood pressure: the top number is the systolic reading (the peak blood pressure when your heart is squeezing blood out), the bottom number is your diastolic reading (the pressure when your heart is filling with blood­).

• Normal blood pressure is less than 120 on top and less than 80 on the bottom.
• Prehypertension levels are 120-139 on top and 80-89 on the bottom.
• High blood pressure, stage 1 is 140-159 on top and 90-99 on the bottom.
• High blood pressure, stage 2 is 160 or higher on top and 100 and over on the bottom.

The higher the blood pressure, more often the blood pressure should be checked.

How to avoid high blood pressure:
These steps can be taken to avoid or reduce the risk for high blood pressure:

• Lose weight.
• Stop smoking.
• Eat properly.
• Exercise.
• Lower your salt intake.
• Reduce your alcohol consumption.
• Learn relaxation methods.
• Controlling your diabetes

You can consult with your doctors if the blood pressure tends to remain high as he or she can prescribe a different medicine.

Treatment:
Treatment begins with the changing of lifestyle to help reduce your blood pressure and reduce the risk of heart disease. Doctors also prescribe antihypertensive medicines to keep the blood pressure low.

If the blood pressure can be controlled with medicines then you will have to take the medicine for the rest of your life. Do not stop taking the medicine without talking with the doctor, else you may increase your risk of having a stroke or heart attack.

Living with high blood pressure can some time become difficult. You will always need to monitor your weight, make healthy food choices, exercise, learn to cope with stress, avoid smoking, and limit your alcohol intake.

You will have to make sure you are going for regular blood pressure check-ups. You can buy your own, automated arm blood pressure cuff for use at home. Your doctor may want you to check your blood pressure several times a day. You can also use an ambulatory (wear as you are moving about) blood pressure monitor.

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A high-salt diet may increase the risk of dementia

Consuming high-salt diet may be harmful as it may increase the risk of dementia later in life, warns a recent study. Researchers explained that high-salt diet reduces resting blood flow to the brain and causes dementia in mice. The study is the first to unveil a gut-brain connection, linking high dietary salt intake to neurovascular and cognitive impairment. The findings illuminate a potential future target for countering harmful effects to the brain caused by excess salt consumption. The researchers explained that mice fed a high-salt diet developed dementia even when blood pressure did not rise.

Researchers said, ‘This was surprising since, in humans, the deleterious effects of salt on cognition were attributed to hypertension’. The mice were given food containing four percent or eight percent salt, representing an 8 to 16 fold increase in salt compared to a normal mouse diet. The higher level was comparable to the high end of human salt consumption. After eight weeks, the team examined the mice using magnetic resonance imaging. The results revealed that the mice showed marked reductions in resting cerebral blood flow in two areas of the brain involved in learning and memory: 28 percent decrease in the cortex and 25 percent in the hippocampus.

The scientists discovered that an impaired ability of cells lining blood vessels, called endothelial cells, reduced the production of nitric oxide, a gas normally produced by the endothelial cells to relax blood vessels and increase blood flow. Rodents that only ate the high-salt diet developed dementia, performing significantly worse on an object recognition test. 

THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE HAVING ANY PARTICULAR FOOD/ MEDICATION/EXERCISE/OTHER REMEDIES.    

PS- THOSE INTERESTED IN RECIPES ARE FREE TO VIEW MY BLOG-                      
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