A March 2020 study by the University of Birmingham said,
"We know that older people show a blunted response to muscle building when consuming a certain amount of protein. Therefore, older individuals need to eat more protein to get the same muscle building response as younger and middle-aged people."
"Another way to help muscles make better use of dietary protein is to perform regular exercise".
"Most people are reaching the Recommended Daily Allowance of protein, but our results show that a one-size-fits-all guideline for protein intake isn't appropriate across all age groups. Simply saying older people should eat more protein isn't really enough either. We need a more sophisticated and individualised approach that can help people understand when and how much protein to consume to support muscle mass."