Seniors may need 1.0-1.3 grams of protein for every kilogram of body weight. For example, if you weight 180 pounds this could mean consuming 80-104 grams of protein every day, regardless of your calorie intake.
Recommended intake. So, how much protein should seniors eat? The most commonly cited standard is the recommended dietary allowance (RDA): 0.8 grams of protein per kilogram (2.2 pounds) of body weight per day.
The current recommended dietary allowance for women older than 70 years is 0.36 grams for each pound of body weight or 46 grams of protein for a 130-pound woman. This amount is the same for all women 19 and older.
It has been reported that the optimal dose of dietary protein consumption in a meal that results in a near maximal anabolic response is ~35 g/meal  or 0.40 g/kg/meal of high-quality protein in elderly adults , translatable to 1.2 g/kg/day or 96 g/day for an 80 kg elderly adults.
During these stressful periods, aging bodies process protein less efficiently and need more of it to maintain muscle mass and strength, bone health and other essential physiological functions. Even healthy seniors need more protein than when they were younger to help preserve muscle mass, experts suggest.
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To determine your daily protein intake, you can multiply your weight in pounds by 0.36, or use this online protein calculator. For a 50-year-old woman who weighs 140 pounds woman and who is sedentary (doesn’t exercise), that translates into 53 grams of protein a day.
Eating too much protein can worsen kidney problems, and over time can cause symptoms like bad breath, indigestion and dehydration. Certain sources of protein like meat, dairy, and processed foods can increase the risk of chronic illnesses like heart disease and cancer.
Vegetables with the most protein include broccoli, spinach, asparagus, artichokes, potatoes, sweet potatoes, and Brussels sprouts, which typically contain 4–5 grams of protein per cooked cup ( 69, 70, 71, 72, 73, 74, 75 ).
Whey Protein Shakes May Help Build Muscle Mass in Seniors. Researchers say protein shakes combined with exercises showed significant health benefits in a group of men over the age of 70. Senior citizens may want to take a tip from body builders and make whey protein shakes a regular part of their diets.
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Top 10 Protein Foods
People can enjoy it either raw or cooked. Broccoli has the following protein content ( 36 ): One cup (88 g) of chopped broccoli contains 2.5 g of protein. 100 g of broccoli contains 2.8 g of protein and 34 calories.