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Protein plays a role in far more than muscle building. It helps repair tissues, supports the immune system, contributes to healthy skin and bones and helps the body recover from illness or physical activity.
Because appetite, eating habits and nutritional needs often change with age, some adults may not consume enough protein without realizing it.
Here are some of the hidden signs that could suggest your body needs more.
1. You're losing strength
One of the earliest signs of inadequate protein intake can be a gradual loss of strength.
If carrying groceries, climbing stairs or getting up from a chair feels more difficult than it used to, your muscles may not be receiving all the nutrients they need.
Of course, strength changes naturally with age, but nutrition also plays an important role.
2. You feel hungry soon after eating
Meals low in protein may leave you feeling satisfied for only a short time.
Protein helps slow digestion and supports fullness, which is why people who eat too little may find themselves searching for snacks shortly after meals.
Adding protein-rich foods to breakfast and lunch may help maintain steadier energy levels throughout the day.
3. Cuts and bruises seem to heal more slowly
The body relies on protein to repair tissues.
If small wounds, scrapes or bruises take longer than expected to improve, nutrition could be one of several factors involved.
Healing can also be affected by age, circulation, diabetes and other medical conditions, so persistent changes should be discussed with a healthcare professional.
4. You're losing muscle without trying
Weight loss isn't always a sign of better health.
Some adults maintain the same body weight but gradually lose muscle and gain body fat, a process that can occur quietly over time.
This loss of muscle may affect balance, mobility and independence later in life.
5. Your hair seems thinner
Hair is made largely of protein.
While many factors can contribute to hair thinning—including genetics, hormones and stress—poor nutrition can sometimes play a role.
A balanced diet that includes enough protein supports healthy hair growth along with many other body functions.
6. You feel tired more often
Fatigue has many possible causes, but inadequate nutrition can contribute.
When meals lack sufficient protein, some people notice lower energy levels or reduced stamina during everyday activities.
Protein also helps maintain muscle mass, which is important for staying active.
Who may be at greater risk?
Some adults are more likely to consume too little protein, including:
- People with a reduced appetite.
- Adults who eat very small meals.
- Those following restrictive diets.
- Individuals with chewing or swallowing difficulties.
- Older adults living alone.
- People recovering from illness.
These factors don't guarantee low protein intake, but they can increase the risk.
How much protein do older adults need?
Protein needs vary depending on body size, health status and activity level.
Some experts suggest that older adults may benefit from slightly higher protein intake than younger adults, particularly if they want to preserve muscle mass.
Good sources of protein include:
- Eggs.
- Fish.
- Chicken and turkey.
- Greek yogurt.
- Milk.
- Beans and lentils.
- Tofu.
- Nuts and seeds.
Spreading protein intake throughout the day may also be beneficial.
It's not just about muscles
Many people think of protein only in relation to fitness.
In reality, getting enough protein supports strength, balance, recovery, immune function and healthy aging overall.
If you've noticed subtle changes such as fatigue, muscle loss or decreased strength, it may be worth taking a closer look at your diet.
Small adjustments today can help support independence and quality of life for years to come.
