Eating well after 65 looks different than it did at 45 — and that catches many of my patients by surprise. Your metabolism slows, your appetite may fade, and your body actually needs more of certain nutrients even as it needs fewer calories overall. At Pinnacle Health in Sun City, Arizona, I spend a lot of time talking with patients about food, because good nutrition is one of the most powerful tools we have for healthy aging. Here is what every adult over 65 should know.
Why Nutritional Needs Change After 65
As we age, several changes affect how our bodies use food. Muscle mass naturally declines, which lowers the number of calories we burn at rest. Stomach acid production decreases, making it harder to absorb vitamin B12, calcium, and iron. Our sense of thirst weakens — a real concern here in the Arizona desert. And medications commonly prescribed to seniors can interfere with appetite or nutrient absorption.
The result is a nutritional paradox: older adults need fewer calories but more nutrition per bite. Every meal has to work harder.
Protein: The Nutrient Most Seniors Fall Short On
If I could get my Sun City patients to change one thing about their diet, it would be eating more protein. After 65, your body becomes less efficient at turning dietary protein into muscle, so you need more of it just to maintain what you have. Losing muscle means losing strength, balance, and independence — and it raises your risk of falls.
Aim for a palm-sized portion of protein at every meal, not just dinner. Good choices include eggs, Greek yogurt, cottage cheese, fish, chicken, beans, and lentils. Many of my patients eat almost no protein at breakfast — adding two eggs or a cup of Greek yogurt in the morning is one of the simplest upgrades you can make.
Calcium and Vitamin D for Strong Bones
Bone loss accelerates after menopause in women and affects men as well. Adults over 65 should get about 1,200 mg of calcium daily from foods like dairy, fortified plant milks, canned salmon with bones, and leafy greens. Vitamin D helps your body absorb that calcium — and despite our 300 days of sunshine in Sun City, many of my patients are surprisingly low in vitamin D, partly because we (wisely) avoid the midday sun.
I often check vitamin D levels during annual wellness visits and recommend supplements when needed. Do not start high-dose supplements without talking to your doctor first.
Vitamin B12: The Absorption Problem
Up to one in five older adults has low vitamin B12, often because decreased stomach acid impairs absorption from food. Common medications, including metformin and acid reducers like omeprazole, make this worse. Low B12 can cause fatigue, numbness or tingling in the hands and feet, balance problems, and memory changes that are sometimes mistaken for dementia.
The good news: B12 deficiency is easy to detect with a blood test and easy to treat. If you take metformin or an acid reducer, ask about having your B12 checked.
Fiber for Heart and Digestive Health
Constipation and high cholesterol are two of the most common complaints I hear, and fiber helps with both. Aim for 25 to 30 grams daily from whole grains, beans, vegetables, fruits, nuts, and seeds. Increase fiber gradually and drink plenty of water along with it — fiber without fluid can make constipation worse.
Hydration: Especially Critical in Arizona
Your sense of thirst declines with age, which means you can become dehydrated before you ever feel thirsty. In our Arizona heat, that is genuinely dangerous. Dehydration in seniors can cause dizziness, confusion, urinary tract infections, and falls, and it sends many West Valley seniors to the emergency room every summer.
Do not wait for thirst. Keep a water bottle with you, drink a full glass with every meal and medication dose, and eat water-rich foods like melon, cucumber, and citrus. If your urine is dark yellow, you need more fluids. Patients with heart failure or kidney disease should ask their doctor about the right daily fluid target, since more is not always better in those conditions.
Practical Tips for Eating Well in Sun City
Healthy eating gets harder when you are cooking for one or living on a fixed income. A few strategies that work well for my patients:
- Cook once and eat twice by making double batches of soups and casseroles to freeze.
- Keep convenient proteins on hand like canned tuna, rotisserie chicken, eggs, and peanut butter.
- Shop the frozen vegetable aisle, where nutrition rivals fresh at a lower price.
- Make meals social when you can — we simply eat better in company. Many Sun City community centers and churches host regular group meals worth exploring.
When to Talk to Your Doctor About Nutrition
Certain warning signs deserve a medical conversation, not just a diet change. Call your doctor if you have lost weight without trying, if food no longer tastes right, if chewing or swallowing has become difficult, or if your appetite has noticeably faded. Unintentional weight loss in older adults is never something to ignore — it can signal depression, medication side effects, dental problems, or underlying illness, and all of those are treatable.
A medication review is also worthwhile. Several common prescriptions affect appetite, taste, and nutrient absorption, and adjusting them can make a real difference in how well you eat.
Nutrition Is Part of Good Primary Care
At Pinnacle Health, nutrition is not an afterthought — it is part of every annual wellness visit and chronic disease conversation. Whether you are managing diabetes, protecting your bones, or simply want more energy, small changes to how you eat can pay large dividends at any age.
If you are over 65 and have questions about your diet, weight, or supplements, we are here to help. Dr. Annie Khurana and the Pinnacle Health team serve seniors throughout Sun City, Sun City West, Peoria, Surprise, and Glendale. Call (623) 295-2952 or schedule an appointment online today — same-day visits are often available.
Ready to talk with Dr. Khurana?
Pinnacle Health is welcoming new patients in Sun City and across the Northwest Valley. We'll listen, review your history, and build a plan that fits your life.