Friday, 22 August 2025

Blood Pressure

The tissue that was sent off to pathology did contain nodular basal cell carcinoma but the margins were clear indicating that it hadn't spread to surrounding areas. Here is an excerpt from the report:


I'll have another suspicious area removed next Thursday and hopefully the pathology report will be similar. Of some concern however, is my systolic blood pressure that reached 160 for two days in a row now. Once at the doctor's office yesterday and again at a pharmacy today. This was a shock and prompted me to buy a blood pressure monitor (shown below).


I've been doing some research using Gemini and here is some of our interaction.
Is there cause for concern if a 76 year old's systolic blood pressure measures 160 for two days in a row? If there, what action should be taken?

Yes, a systolic blood pressure reading of 160 mmHg for a 76-year-old is a cause for concern. For an adult of any age, a reading of 140 mmHg or higher is classified as Stage 2 hypertension, and 160 mmHg is well into this range. While blood pressure goals for older adults can sometimes be slightly higher than for younger individuals, a consistent reading of 160 mmHg is not considered healthy and warrants action. 🩺

Why It's a Concern

Sustained high blood pressure, also known as hypertension, is often called the "silent killer" because it typically has no noticeable symptoms. However, over time, it can lead to serious health problems by causing damage to blood vessels and vital organs. In older adults, high blood pressure can increase the risk of:

  • Heart attack and stroke: High blood pressure puts a strain on the heart and arteries, which can lead to cardiovascular events.

  • Vascular dementia: Damaged blood vessels in the brain can impair cognitive function.

  • Kidney and eye disease: The tiny blood vessels in the kidneys and eyes are particularly vulnerable to damage from high blood pressure.


What Actions Should Be Taken

If a 76-year-old has a consistent systolic blood pressure of 160 mmHg, here are the recommended actions, starting with the most immediate and moving to long-term strategies.

1. Consult a Doctor 

The most important step is to schedule an appointment with a healthcare professional as soon as possible. They can:

  • Confirm the readings and make a formal diagnosis.

  • Rule out "white-coat hypertension," which is when blood pressure is high in a clinical setting but normal at home.

  • Evaluate for any other risk factors or underlying conditions that may be contributing to the high blood pressure.

  • Discuss the best treatment plan, which may include medication. For this level of hypertension, a doctor may recommend starting with a single antihypertensive agent or even a combination of two medications.

2. Implement Lifestyle Changes

In conjunction with medical treatment, several lifestyle modifications can significantly help lower blood pressure. These are often recommended for all patients with hypertension.

  • Dietary Adjustments:

    • Reduce Sodium: Cut back on salt and processed foods.

    • Adopt the DASH Diet: This dietary approach focuses on fruits, vegetables, whole grains, and low-fat dairy. It has been shown to be very effective in lowering blood pressure.

  • Increase Physical Activity:

  • Aim for at least 30 minutes of moderate aerobic activity (like brisk walking, swimming, or cycling) on most days of the week.
  • Maintain a Healthy Weight: Losing even a small amount of weight can have a significant impact on blood pressure.

  • Limit Alcohol and Quit Smoking: Excessive alcohol consumption and smoking can both raise blood pressure.

  • Manage Stress: Find healthy ways to cope with stress, such as meditation, deep breathing exercises, or hobbies.

3. Monitor Blood Pressure at Home 

A doctor will likely recommend regular at-home blood pressure monitoring. This provides a more accurate picture of a person's average blood pressure and helps a doctor determine how well the treatment plan is working. When taking readings, ensure the person is:

  • Sitting quietly for at least five minutes before the measurement.
  • Sitting with their back supported and feet flat on the floor.
  • Using an upper-arm cuff that fits correctly.
  • Taking the measurement at the same time each day (e.g., morning and evening).

By combining professional medical care with consistent lifestyle changes and home monitoring, the 76-year-old can effectively manage their blood pressure and reduce their risk of serious health complications.

Can you tell me more about the DASH diet that you mentioned as part of a strategy for lowering blood pressure.

The DASH diet, which stands for Dietary Approaches to Stop Hypertension, is a flexible and balanced eating plan specifically designed to prevent and lower high blood pressure. It is not a fad diet but rather a long-term, heart-healthy eating style that has been endorsed by major health organizations, including the American Heart Association.

The diet's effectiveness comes from its focus on foods rich in key nutrients that are known to help lower blood pressure: potassium, calcium, and magnesium. At the same time, it limits foods high in sodium, saturated fats, and added sugars.

Core Principles of the DASH Diet

The DASH diet is built on a simple framework of food groups, with recommended daily or weekly servings. The exact number of servings depends on your daily calorie needs, which a doctor or dietitian can help you determine. Here are the key food groups and their role in the diet:

  • Fruits and Vegetables: This is the cornerstone of the DASH diet. They are rich in potassium, magnesium, and fiber, and are naturally low in sodium. The diet encourages eating a wide variety of colorful fruits and vegetables.
  • Whole Grains: These provide fiber and other nutrients. Examples include brown rice, oatmeal, whole-wheat bread and pasta. They are preferred over refined grains.
  • Low-Fat or Fat-Free Dairy Products: Milk, yogurt, and cheese are excellent sources of calcium, which is important for blood pressure regulation.
  • Lean Meats, Poultry, and Fish: These are good sources of protein. The diet encourages limiting red meat and choosing leaner options. Fatty fish like salmon and mackerel are also recommended for their omega-3 fatty acids.
  • Nuts, Seeds, and Legumes: These are a great source of magnesium, potassium, protein, and fiber. This group includes almonds, walnuts, lentils, and beans.
  • Healthy Fats and Oils: The diet recommends using healthy fats like olive oil and vegetable oil in moderation.
  • Limited Sweets and Added Sugars: The DASH diet strictly limits sweets, sugary drinks, and other foods with added sugar.

Limited Sodium: This is a crucial component. The standard DASH diet aims for a daily sodium intake of no more than 2,300 mg (about one teaspoon of salt). A more restrictive version aims for 1500 mg, which can have an even greater blood pressure-lowering effect. This is achieved by:

  • Avoiding processed, canned, and packaged foods.
  • Cooking at home more often and using herbs and spices instead of salt for flavour.
  • Checking food labels for sodium content.

What Makes It So Effective?

The DASH diet works in a multi-faceted way to lower blood pressure:

  • Reduced Sodium Intake: Less sodium in the diet means less fluid retention in the body, which reduces the volume of blood and the pressure on arterial walls.
  • Increased Potassium Intake: Potassium helps to balance the effects of sodium in the body. The more potassium you eat, the more sodium you excrete through urine. This can help lower blood pressure. Fruits and vegetables are excellent sources of potassium.
  • Increased Magnesium and Calcium Intake: These minerals also play a vital role in muscle function, including the muscles that line blood vessels. A sufficient intake of these minerals helps blood vessels relax and widen, which lowers blood pressure.

How to Get Started

You don't have to overhaul your entire diet overnight. The key is to make gradual changes. You can start by:

  • Adding an extra serving of vegetables to your dinner.
  • Having a piece of fruit as a snack instead of a processed one.
  • Using herbs, spices, or lemon juice to flavor your meals instead of salt.
  • Choosing whole-grain bread over white bread. 

The DASH diet is a sustainable, proven, and delicious way to take control of your blood pressure and improve your overall heart health.

The focus with BP seems to be on the systolic measurement but what about the diastolic? For a 76 year old male what is considered a healthy range of systolic and diastolic?

That's a very insightful question. While the systolic blood pressure (the top number) often gets the most attention, especially in older adults, the diastolic measurement is also very important.

Why Systolic is Prioritized in Older Adults

The emphasis on systolic pressure in older adults is due to the natural physiological changes that occur with aging. As a person gets older, their arteries tend to become stiffer and less elastic, a condition known as arteriosclerosis. This makes it harder for the arteries to expand to accommodate the surge of blood from the heart's contraction, causing the systolic pressure to rise.

Therefore, for people over the age of 50, a high systolic reading is considered a more significant predictor of heart disease, stroke, and other cardiovascular events than a high diastolic reading.

The Significance of Diastolic Pressure

The diastolic pressure (the bottom number) measures the pressure in the arteries when the heart is at rest between beats. This period is crucial because it's when the heart muscle itself receives oxygen-rich blood.

  • High Diastolic: A high diastolic reading indicates that the arteries are not relaxing enough between heartbeats. While less common than high systolic pressure in older adults, a consistently high diastolic pressure can still put a strain on the heart and increase the risk of heart disease and stroke.

  • Low Diastolic: In some older adults, the diastolic pressure can be low, even if the systolic is high. This is called Isolated Systolic Hypertension and is a direct result of the arterial stiffness mentioned earlier. A very low diastolic reading (e.g., below 60 mmHg) can be a concern, as it may mean that the heart muscle isn't getting enough blood and oxygen between beats.

Healthy Blood Pressure Range for a 76-Year-Old Male

Blood pressure targets for older adults are a subject of ongoing discussion among medical professionals, as they need to be balanced with the potential for side effects from medication, such as dizziness and falls.

According to major medical organizations like the American Heart Association and the Australian Heart Foundation, the general goal for a 76-year-old male is:

  • Systolic: A target of less than 140 mmHg is a common recommendation, but some doctors may aim for a lower target, such as less than 130 mmHg, if it is well-tolerated. For a 76-year-old, a reading of 160 mmHg is definitively in the "high" category and requires treatment.

  • Diastolic: The goal for diastolic pressure is typically less than 90 mmHg. For many older adults, the diastolic reading may naturally be lower, and this is generally not a concern as long as the systolic is controlled. However, a diastolic reading that is consistently below 60 mmHg may be a sign of a potential issue and should be discussed with a doctor.

In summary, for a 76-year-old male:

  • Healthy Range: A blood pressure reading of 120/80 mmHg is considered ideal, but achieving this may not be the primary goal for some older patients.

  • Target Range: A more realistic and widely accepted target for older adults with hypertension is <140/<90 mmHg, with many aiming for even lower numbers if they are well-tolerated and don't cause side effects.

Your doctor will consider your overall health, any other medical conditions, and how you feel before setting a specific blood pressure target. The most important thing is to manage your blood pressure to reduce your risk of serious health complications.

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I watched this interesting video on YouTube about the Japanese and ageing. Here is the text from the video (formatted thanks to Gemini ),