Nutrition in Old Age
Changes in the Body During Old Age
As we age, physiological changes occur in the body. Body weight, which increases during adulthood, generally continues to rise until the age range of 50–59, after which it begins to gradually decrease. Sarcopenia, defined as a decrease in muscle mass and strength, can occur as a natural process even in the absence of any disease. The underlying causes of sarcopenia include age-related biological changes, reduced physical activity, and prolonged malnutrition.
As we age, bone density and total calcium levels decrease. Vitamin D deficiency increases the risk of osteoporosis by accelerating bone loss. Adequate calcium intake is particularly important for preventing bone mineral loss, especially in women during the first few years after menopause. Calcium requirements may vary depending on an individual’s diet.
A decrease in basal metabolic rate can slow down bowel movements, making constipation more common. A decline in taste and smell, tooth loss, reduced saliva production, and difficulties with chewing and swallowing can negatively impact nutrition. Insufficient fluid intake due to a diminished sense of thirst increases the risk of dehydration. Additionally, the total amount of water retained in the body decreases with age.
What Should Nutrition Be Like in Old Age?
The number of meals should be increased, and small, frequent meals should be preferred. Breakfast should not be skipped, ideal body weight should be maintained, and a balance should be maintained between energy intake and energy expenditure.
A sufficient and balanced diet is achieved by consuming adequate amounts of milk and dairy products, meat, eggs, and legumes, as well as vegetables, fruits, and grains. Whole grains are rich in B vitamins, vitamin E, and minerals such as iron, zinc, magnesium, and phosphorus.
Omega-3 fatty acids help prevent muscle loss by supporting muscle protein synthesis. They also have positive effects on vision, cognitive function, bone and joint health, and blood lipid levels. It is recommended to consume fish at least 2–3 times a week; for individuals who cannot consume fish regularly, fish oil supplements may be considered under a doctor’s supervision.
Consumption of animal fats should be limited, and liquid vegetable oils should be preferred. Low-fat milk and dairy products should be consumed; milk-based desserts should be preferred over sugary and rich desserts. Consumption of cakes and sweets on special occasions should be limited as much as possible.
You should aim to consume 5–7 servings of fruits and vegetables daily and include legumes in your diet 2–3 times a week. Fruits and vegetables help reduce the risk of heart disease, certain types of cancer, type 2 diabetes, and high blood pressure. To preserve their nutritional value, boiling, baking, or steaming should be preferred over frying.
Salt Intake and Fluid Intake
To reduce the risk of high blood pressure, which is common in individuals over the age of 65, daily salt intake should be limited. No additional salt should be added to meals, and foods high in salt—such as pickles and brined foods—should be avoided.
Even if you don’t feel thirsty, you should drink water at regular intervals throughout the day. It is recommended to drink an average of 8–10 glasses of water per day.
To maintain muscle mass, it is important to ensure adequate intake of high-quality protein at every meal. Low-fat dairy products, meat, poultry, fish, eggs, and legumes are good sources of protein. Vitamin D supplementation may be considered for individuals who do not get enough sun exposure, and vitamin B12 supplementation may be planned upon a doctor’s recommendation if intake is insufficient.
A balanced diet, adequate fluid intake, and age-appropriate regular physical activity are essential for maintaining good health as we age.