If you have read one or many nutrition articles of recent years you would be forgiven for thinking that potatoes are nothing but carbohydrates with no other purpose as a food than converting to sugar, spiking blood glucose and creating havoc to our metabolic systems. Once a proud staple food, it has been attacked by dieters and professors alike, even relegated to the top tier (use sparingly) in an alternative Healthy Eating Pyramid.
You would also be forgiven for thinking of other foods, usually animal foods, as protein.
In food guides, foods are placed into various groups of similar nutrient value and these are usually fruit, vegetables, cereals, dairy and then a fifth group often named ‘protein‘ foods. Here ‘protein’ foods refer to meat, eggs, fish, poultry, legumes and nuts. The UK Eatwell Guide (1), although listing examples, refers to this group as ‘proteins’; the US Dietary Guidelines (2) refers to this group as ‘protein’ and ‘protein foods’; and the US Choose MyPlate as ‘protein’ (3). I note the Australian Dietary Guidelines (4) do not refer to this food group as ‘protein’ but rather lists the foods within the group ie: meat, poultry, fish, egg, tofu, nuts, seeds, legumes/beans. The Australian example aside, such messages of ‘protein’ as a food group from nutrition authorities in the UK and US, has a flow-down effect to health professionals and the public and this theme of ‘protein’ as a food group is common in the lay-press. One could mistakenly assume that those foods (meat, eggs, fish, poultry, legumes, nuts) are solely or predominantly protein; and that cereals, grains, tubers, potatoes, vegetables and dairy foods (which appear in different food groups) are thus low, inferior or poor quality sources of protein. Neither assumption is correct. Continue reading “Potato Protein Power”