Question

What dietary recommendations and behavioural changes are important for an individual who is suffering from hypertension?

Hint:

To spot hidden sodium, read nutritional labels carefully. Hypertensive patients should avoid packaged foods containing more than 400 mg of sodium per 100g of food.

Answer 1

Step 1: Dietary Recommendations:
Nutritional therapy is essential for managing hypertension and reducing cardiovascular risks:

• Restrict Sodium Intake: Reduce total dietary salt (sodium chloride) to less than $5\text{ grams}$ per day (about $2\text{ grams}$ of elemental sodium). Avoid processed snacks, canned soups, pickles, papads, and salty condiments, and do not add extra salt to food at the table.
• Adopt the DASH Diet (Dietary Approaches to Stop Hypertension): Emphasize a diet rich in fruits, vegetables, whole grains, and low-fat dairy products. This naturally increases the intake of potassium, magnesium, and calcium, which help relax blood vessels, promote sodium excretion through the kidneys, and lower peripheral resistance.
• Reduce Saturated Fats and Cholesterol: Limit consumption of red meat, butter, ghee, and hydrogenated oils. Replace them with heart-healthy monounsaturated and polyunsaturated fats (MUFA/PUFA) from sources like olive, mustard, or canola oils, and nuts to protect against atherosclerosis.

Step 2: Behavioral and Lifestyle Modifications:
Lifestyle changes work hand-in-hand with dietary modifications to help manage blood pressure:

• Engage in Regular Aerobic Exercise: Commit to at least $30\text{ to }45$ minutes of moderate-intensity aerobic exercise (such as brisk walking, cycling, or swimming) $5\text{ to }7$ days a week. Physical activity stimulates nitric oxide production, which helps dilate and relax blood vessels.
• Weight Management: Maintain a healthy body weight ($\text{BMI} = 18.5\text{--}22.9\text{ kg/m}^2$ for Asian populations). Even a modest weight loss of $5\text{--}10\%$ of initial body weight can significantly lower both systolic and diastolic blood pressure.
• Avoid Alcohol and Tobacco: Eliminate tobacco use and limit alcohol intake. Nicotine causes immediate blood vessel constriction and arterial stiffness, while excess alcohol elevates sympathetic nervous system activity, raising blood pressure.
• Manage Stress: Practice relaxation techniques like mindfulness, meditation, yoga, or deep-breathing exercises to reduce chronic sympathetic nervous system overactivity.