Over 50? You're Not Eating Enough Protein. Here's Why, and How Much

It's for much more than just muscle

In the swirl of debate about high and low protein diets and the necessary amount of protein, the wide-ranging role of protein for our health often gets scant attention. It's more than just for muscle.

Some government health guidelines recommend people over 50 increase their daily intake of protein. Usually, this recommendation is linked to sarcopenia - the loss of muscle as we age. 

Apparently, because we become less efficient at converting protein into muscle, we should have more to kick the process along. I'm not sure how that works in people who are not active, whether it helps or not.

But for active older people, like me, I think that we should have quite a lot more than the usual health official recommendations.

Those recommendations range from 0.8g per kg of body weight to 1.2g per kg. If you are exercising regularly and hard, then up to 2.0g / kg can be utilised by your body.

On the cautionary side, there is research showing that too much protein can have adverse health effects, including a reduced lifespan. 

If we do become less efficient at converting protein into muscle, then I suspect that we also become less efficient in utilising protein generally.

Consider this; protein is part of every cell, tissue and organ in our bodies. 

We need protein for many essential organs and functions, including:

• Muscle mass;
• Collagen which provides strength and structure to tissues (e.g. cartilage);
• Skin, hair and nails which are mainly composed of proteins;
• Hemoglobin which transports oxygen around our body;
• Most hormones which act as our body's chemical messengers are also proteins
• Enzymes, which regulate all aspects of metabolism. Enzymes support essential biochemical reactions that allow us to digest food, generate energy to contract muscles, and regulate insulin production;
• Antibodies - which play a critical role in our immune response;
• Proteins like actin and tubulin, trigger essential processes in all living cells. These include cell division, cell shape maintenance and movements;
• Protein is vital for the growth and maintenance of bones.​

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We can’t store protein, we need to eat it daily

​Unlike fats and carbohydrates, we cannot store protein; we need a daily intake of dietary protein. Studies show that about half of older people consume less than conservative general health recommendations (about 0.8g per kg of body weight).

While extra protein may not lead to extra muscle, we know that a lack of adequate protein intake contributes to skeletal muscle loss. 

Consuming less than needed is a serious problem. Not just for muscle but for all of the functions listed above.

Boost your intake, here are some foods

A daily intake of 1.2g of protein per kilogram of body weight for people over 50 is a healthy objective, especially if you are active. If you are an active person, the "extra" protein will operate metabolically more efficiently across all the functions listed above, including building new muscle.

In practice, this means if you weigh 70kg, then you should aim for a daily intake of 70 X 1.2 = 84g or protein. This is not very much - I mean it is not difficult to achieve that many grams per day.

Personally, I aim to get 25% of my daily calorific intake from protein sources. For me, with my high level of activity, that comes in at about 130g per day.

Protein from animal sources, combined with grains, fruits and nuts, will get you to your 1.2g/kg/day target.

Some sources of dietary protein include:

• lean meat, poultry and fish;
• eggs;
• dairy products like milk, yoghurt and cheese;
• seeds and nuts;
• beans and legumes (such as lentils and chickpeas);
• soy products like tofu;
• some grain and cereal-based products are also sources of protein but are generally not as high in protein as meat and meat alternative products.

A large egg, for example, contains 7g of protein. I have two large eggs daily. I also consume a protein shake daily containing 26g of protein. I would often eat 200g of chicken ~ 54g of protein, and an oily fish such as salmon which also has healthy fats (200g) ~ 40g of protein.

Plus I eat plenty of nuts, mainly hazelnuts and walnuts, every day which adds up to 4 or 5g of protein, and a bunch of healthy fats.

Review your daily intake of protein, and use Google to do a rough calculation of how much protein you are eating. If you are way under the 1.2g per kg of body weight, then think seriously about boosting your intake.

Higher protein intake is associated with better strength, physical performance, and lean muscle mass in older adults.

Don't cut yourself short.

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