Protein is a particularly important macronutrient for older adults. Studies show that, on average, people start to gradually lose muscle mass in their 30s and 40s, and that after the age of 60 this decline accelerates.When it gets severe enough, this loss of muscle mass with age, known as sarcopenia, can lead to serious health problems. Studies show that sarcopenia can increase the risk of falls, fractures and physical disabilities – all of which can hamper an older adult’s mobility, independence and quality of life. Sarcopenia can also lead to insulin resistance, a precursor to Type 2 diabetes.
But consuming an adequate amount of protein can help to slow or minimise this muscle loss with age. Whey protein powder can certainly help you meet your protein needs, experts say, but it’s not necessary if you make sure to get enough protein from your daily meals. Federal guidelines recommend that most healthy adults consume at least 0.8 grams of protein per kilogram of body weight per day. However, this is the minimum amount you need to avoid becoming malnourished – and many experts say that for optimal health you should aim a little higher.
As you age, especially if you are 65 or older, you’ll need to consume more than the recommended dietary allowance to preserve your muscle, said Katie Dodd, a registered dietitian and founder of the Geriatric Dietitian blog.
“Research has shown that older adults do need a little more protein than younger adults,” she said. “A lot of that has to do with sarcopenia. They need it to protect their muscle mass. I talk a lot about protein because you need it in order to get the most out of your golden years.” Dodd recommends that generally healthy adults who are 65 or older consume at least 1 to 1.2 grams of protein per kilogram of body weight. For a person who weighs 68 kilograms, this means incorporating about 68 to 82 grams of protein into your daily diet.
Dodd cautioned, however, that protein needs can vary depending on one’s circumstances. Older adults who have a wound or injury might need slightly more protein to help with their healing, she said, while people who have kidney disease might be advised to reduce their protein intake. Varying levels of physical activity may also change the calculation. It’s a good idea to consult with your health care provider before making any significant changes to your diet.
“The standard healthy adult who is eating a healthy diet does not need a protein supplement.”
Whether you get your protein from supplements or from whole foods, it’s best to spread your intake across the day, rather than consuming the bulk of your protein in one meal, so your body has time to absorb it. You should focus on getting your protein from whole foods like fish, dairy, meat, eggs and poultry, Dodd said. You can also get it from plant foods like nuts, beans and lentils. If you can’t get all the protein you need from whole foods, then it’s fine to boost your intake through protein supplements, Dodd said.
Whey protein is a particularly good source of protein because it’s rich in amino acids the building blocks of protein – and the body absorbs it nicely. It’s also been shown in studies to be particularly beneficial for muscle health when paired with exercise. But for people who are vegan, supplementing with soy, pea or hemp protein products can work as well. “The standard healthy adult who is eating a healthy diet does not need a protein supplement,” Dodd said. “But if they can’t get their protein needs through food, then that’s when supplements can be helpful.”
If you need help determining your daily protein needs, try visiting the protein intake calculator at Examine.com, a large and independent database of nutrition research. The calculator takes into account your sex, weight and activity level to help you figure out how much protein you need. If your goal is to minimise your risk of sarcopenia, then combining an adequate level of protein intake with regular physical activity will do a lot to protect your muscle mass as you age, said Bill Willis, a scientist who studies muscle protein synthesis at Ohio State University and a researcher at Examine.com.
Resistance exercises like pushups, squats and lifting weights or using resistance bands are best. But studies show that even low-intensity forms of physical activity like walking, gardening, lawn mowing and grocery shopping can help to offset the loss of muscle with age. “The take-home message for people 65 and up is that you should make sure you consume enough protein and, number two, be active,” Willis said. “Being sedentary seems to promote sarcopenia more than anything else.”
By Anahad O’Connor
Source: Can protein powders help sarcopenia and ageing muscles?
Critics by: Health Harvard
Adding protein powder to a glass of milk or a smoothie may seem like a simple way to boost your health. After, all, protein is essential for building and maintaining muscle, bone strength, and numerous body functions. And many older adults don’t consume enough protein because of a reduced appetite.
But be careful: a scoop of chocolate or vanilla protein powder can harbor health risks. “I don’t recommend using protein powders except in a few instances, and only with supervision,” says registered dietitian Kathy McManus, director of the Department of Nutrition at Harvard-affiliated Brigham and Women’s Hospital.
Protein powders are powdered forms of protein that come from plants (soybeans, peas, rice, potatoes, or hemp), eggs, or milk (casein or whey protein). The powders may include other ingredients such as added sugars, artificial flavoring, thickeners, vitamins, and minerals. The amount of protein per scoop can vary from 10 to 30 grams. Supplements used for building muscle contain relatively more protein, and supplements used for weight loss contain relatively less.
- A protein powder is a dietary supplement. The FDA leaves it up to manufacturers to evaluate the safety and labeling of products. So, there’s no way to know if a protein powder contains what manufacturers claim.
- We don’t know the long-term effects. “There are limited data on the possible side effects of high protein intake from supplements,” McManus says.
- It may cause digestive distress. “People with dairy allergies or trouble digesting lactose [milk sugar] can experience gastrointestinal discomfort if they use a milk-based protein powder,” McManus points out.
- It may be high in added sugars and calories. Some protein powders have little added sugar, and others have a lot (as much as 23 grams per scoop). Some protein powders wind up turning a glass of milk into a drink with more than 1,200 calories. The risk: weight gain and an unhealthy spike in blood sugar. The American Heart Association recommends a limit of 24 grams of added sugar per day for women and 36 grams for men.
Earlier this year, a nonprofit group called the Clean Label Project released a report about toxins in protein powders. Researchers screened 134 products for 130 types of toxins and found that many protein powders contained heavy metals (lead, arsenic, cadmium, and mercury), bisphenol-A (BPA, which is used to make plastic), pesticides, or other contaminants with links to cancer and other health conditions. Some toxins were present in significant quantities. For example, one protein powder contained 25 times the allowed limit of BPA.
How could protein powder contain so many contaminants? The Clean Label Project points to manufacturing processes or the existence of toxins in soil (absorbed by plants that are made into protein powders)…….
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