Nutrition After 70: What Changes and What to Do About It

The relationship between aging and nutrition is complex. Many older adults eat less than they need — not because food isn't available, but because appetite decreases, the effort of cooking feels burdensome, the joy of meals alone fades, and physical changes make eating more difficult.

At the same time, nutritional needs in certain areas actually increase with age. Getting this balance right matters enormously — inadequate nutrition in older adults contributes to muscle loss, immune decline, cognitive changes, and slowed recovery from illness.

Why Nutrition Changes With Age

• Decreased appetite — driven by reduced physical activity, changes in taste and smell, and hormonal shifts
• Slower metabolism — fewer calories burned at rest means eating less while still meeting protein and micronutrient needs
• Medication interactions — many common medications affect appetite, taste, nutrient absorption, or create nausea
• Dental issues — poorly fitting dentures or dental pain make eating certain foods difficult or painful
• Reduced thirst sensation — older adults are more prone to dehydration because the thirst signal weakens
• Social changes — eating alone reduces motivation to prepare and enjoy full meals
• Physical limitations — arthritis, tremors, or weakness can make cooking and self-feeding harder

The Most Important Nutrients After 70

Protein

Muscle loss (sarcopenia) accelerates with age. Older adults actually need more protein per kilogram of body weight than younger adults — current recommendations are 1.0–1.2g per kg/day, higher than the general adult recommendation of 0.8g/kg. This means a 150-pound adult needs at least 68–82g of protein daily.

Good sources: eggs, Greek yogurt, cottage cheese, fish, chicken, legumes, and protein-fortified foods.

Calcium and Vitamin D

After 70, calcium absorption decreases even as skeletal demands for it continue. The recommended daily calcium intake increases to 1,200mg, and vitamin D (which regulates calcium absorption) to 800 IU — more if blood levels are deficient.

Most older adults are vitamin D deficient, particularly in northern states like Nebraska where sun exposure is limited much of the year. Ask for a blood test at the next physician visit.

B12

Up to 30% of older adults have decreased production of stomach acid, which impairs the absorption of B12 from food. B12 deficiency causes fatigue, nerve damage, and cognitive symptoms that can mimic dementia. Supplemental B12 (either sublingual or in supplement form, which bypasses stomach acid) is often recommended.

Fiber and Hydration

Constipation is extremely common in older adults and is often a sign of inadequate fiber and fluid intake. Aim for 25–30g of fiber daily (from fruits, vegetables, whole grains, and legumes) and at least 8 cups of water or fluid per day.

Many older adults need to drink on a schedule rather than thirst — set a glass of water on the table at every meal and offer fluids proactively.

Practical Strategies to Improve Nutrition

When Appetite Is Low

• Smaller, more frequent meals rather than three large ones
• Eat the highest-protein, highest-nutrient food first when appetite is strongest
• Use nutrient-dense additions: nut butters added to oatmeal, full-fat yogurt, avocado, olive oil on vegetables
• Try meal replacement shakes as supplements (not replacements) for hard days
• Make eating social when possible — even a video call meal with family improves intake

When Cooking Is a Barrier

• Stock easy, nutritious options that require no preparation: cottage cheese, string cheese, hard-boiled eggs, rotisserie chicken, canned beans, yogurt
• Look into local meal delivery programs: Meals on Wheels provides low-cost home-delivered meals for eligible seniors
• Consider a professional caregiver who can assist with meal preparation
• Batch cook simple staples (brown rice, roasted chicken, soups) once or twice per week

When Eating Is Physically Difficult

• Adapted utensils (weighted silverware, rocker knives) can address tremors or weakness
• Soft or pureed diets for dental pain or swallowing difficulties
• Speech therapy for swallowing issues (dysphagia) — this is a medical concern, not just a preference
• Raised plates or non-slip placemats to assist with mobility