With age, the body's nutritional needs change - muscle mass decreases, bone density decreases, and cell regeneration processes slow down. Appropriate protein supply is crucial for the elderly to maintain strength, fitness and independence. It is worth knowing what sources of protein to choose every day to maximally use its pro -refegetation properties and minimize the risk of sarcopenia. In this article, we will discuss why protein is so important in seniors' diets, which its forms are characterized by the highest absorption and how regular consumption of amino acids affects the prevention of muscle mass loss.
When raising the subject of protein in the diet of the elderly, it is worth considering not only the quantity, but also the quality of protein sources, their distribution during the day and additional factors, such as digestion or possible co -existing diseases. Thanks to this, you can arrange the menu so that each meal favors the structure and reconstruction of tissues, supports the health of the joints and bones and improves the overall quality of life.
The importance of protein in the diet of the elderly
With age, muscle protein synthesis naturally decreases, which leads to a gradual loss of mass and strength - the phenomenon referred to as sarcopenia. To counteract this, seniors should increase protein supply to about 1.2-1.5 g per kilogram of body weight per day, instead of standard 0.8 g/kg recommended for younger people. Higher consumption of amino acids helps maintain a positive nitrogen balance and stimulates anabolic processes, which translates into better stability, balance and lower risk of falls.
Protein also supports the production of hormones and enzymes involved in tissue repair, and also regulates the immune system. Thanks to this, older people gain greater resistance to infections and faster regeneration after injuries or surgical procedures. Turning on the right portions of proteins in each meal is therefore necessary to maintain independence and better quality of life at a later age.
The best absorbed protein for seniors
For the elderly, the most important is not only the amount, but also the absorption of protein. Whey isolats (WPI) have a PDCaas indicator of 1.0 and are easily digested even with reduced enzymatic activity in old age. Fast absorption allows for effective synthesis of muscle proteins just after a meal.
The alternative are the hydrolysates of egg protein or micellar casein - their slower pace of release of amino acids supports regeneration for many hours, which is particularly beneficial before bedtime. For seniors with lactose intolerance or sensitive nutrients, a good solution will be the isolates of vegetable proteins (peas + rice) enriched with digestive enzymes, reducing the risk of flatulence and gastric ailments.
In practice, it is worth combining various forms: quickly absorbable whey protein after morning gymnastics and slower digested mixtures of egg or vegetable proteins in later meals. Such a pattern allows you to maintain a constant level of amino acids in the blood and maximize protein synthesis around the clock.
Protein and prevention of sarcopenia
Sarkopenia is a process of mass loss and muscle strength, which in the elderly leads to a limitation of mobility and the risk of falls. Regular consumption of at least 25-30 g of high -quality protein in each main meal can significantly delay this process. Studies show that older adults who use such a strategy retain a greater muscle mass and a better motor function.
In addition, protein promotes collagen and glycoprotein production, which has a positive effect on the condition of the joints and bones, reducing the risk of osteoporosis. In combination with light retaining exercises - e.g. exercises with resistance tape or pool training - a high -protein diet gives the best results in the prevention of falls and improving the quality of life of seniors.
Sources
- Campbell W.W., et al. Protein Requirements of Elderly People: Results of the Prot-Age Study. Clinical Nutrition, 2017.
- Rizzoli R., et al. Protein Supplementation for Healthy Aging. The Journal of Nutrition, Health & Aging, 2018.
- Volpi E., et al. The role of dietary protein in the sarcopenia of aging. The American Journal of Clinical Nutrition, 2013.
- Phillips S.M., et al. Dietary Protein for Athlets: From Requirements to Metabolic Advantage. Applied Physiology, Nutrition, and Metabolism, 2014.
- European Society for Clinical Nutrition and Metabolism (Espen). Guidelines on Enteral Nutrition: Geriatrics, 2019.
FAQ
How many proteins a day should a senior consume?
Older people should aim at 1.2-1.5 g protein per kilogram of body weight a day to counteract muscle mass loss. For a senior weighing 70 kg, this means 84-105 g of proteins, spread over 3-4 meals, with at least 25-30 g of protein in each main meal.
What protein is easily absorbed for the elderly?
Whey isolates (WPI) with pdcaas = 1.0, egg protein hydrolysates and micellar casein are best absorbed. For sensitive seniors, plant isolates (peas + rice) with the addition of digestive enzymes are also a good choice.
Can seniors consume protein nutrients?
Yes, protein nutrients are a convenient complement to the diet of the elderly, especially when the appetite is smaller. It is worth choosing formulas with low sugar and fat content and those enriched with probiotics and digestive enzymes.
How does protein help prevent sarcopenia?
Regular supply 25-30 g of high -quality protein in each meal stimulates the synthesis of muscle proteins, maintains muscle mass and strength. In combination with retaining exercises, it improves mobility and reduces the risk of falls.
Does excess protein harm seniors?
In people with normal kidney function, a moderate increase in protein intake to 1.5 g/kg is not harmful. With existing kidney failure, you should consult a diet with your doctor and monitor kidney parameters.
In what products will the senior find the most protein?
Good sources are thin cottage cheese, Greek yogurt, eggs, fish with soft bones, chicken breast, as well as protein nutrients such as whey isolate or egg protein hydrolysates.
How to spread protein during the day at an elderly person?
Optimally consume the protein every 4 hours in the amount of 25-30 g. For breakfast you can choose yogurt with the addition of conditioner, for dinner a portion of chicken or fish, and in the evening cottage cheese or casein shake before bedtime.
Dietician
Karolina Dobrowolska-Zrałka
doktor nauk medycznych i nauki o zdrowiu, dietetyk kliniczny Absolwentka studiów I i II stopnia na kierunku dietetyka oraz doktorantka w Szkole Doktorskiej Uniwersytetu Medycznego we Wrocławiu
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