Sales of oat milk have skyrocketed over the past decade. But a recent ruling by the UK Supreme Court has ruled that the product cannot legally be labelled as “milk,” ending a long-running battle between producers of plant-based alternatives and the dairy industry.
Invented in the early 90s by Swedish scientist Rickard Öste, co-founder of Oatly, the product began as an alternative for vegans and the lactose intolerant. Today, in the UK, almost one in ten glasses of “milk” consumed is a plant-based alternative – compared to just one in a hundred a decade ago. The oat milk industry is valued at around £275m and accounts for 40% of the plant-based drinks market.
However, some experts warn that the most popular alternative may not be the healthiest.
What does it actually contain?
Nutritionists emphasize that cow's milk and oat milk are very different products from a nutritional point of view.
Cow's milk naturally contains quality protein, calcium, iodine, and vitamin B12. Oat milk usually has less protein and is often artificially fortified to achieve similar levels of calcium and vitamins.
Furthermore, many variants – especially the “barista” ones used in coffee shops – contain added sugars and oils. In some cases, the oat content is only about 10%, while the rest is water, oils and emulsifiers that allow it to froth like traditional milk.
According to cardiologist Dr Oliver Guttmann from The Wellington Hospital, while oats consumed as porridge help lower cholesterol thanks to their fibre, higher fat versions can contribute to raising cholesterol if consumed in large quantities.
Experts also warn about the sugar content. Rapid increases in blood glucose, followed by sudden decreases, can cause hunger and, in the long term, are associated with a higher risk of type 2 diabetes and heart disease.
Are there better alternatives?
According to a 2025 study by researchers at the University of Minnesota, soy milk is the plant-based alternative most nutritionally similar to cow's milk.
It is low in calories and saturated fat, but contains quality plant protein. It is usually fortified with vitamins B2, B12, D, calcium, and iodine.
Soy contains isoflavones—natural compounds that have been studied for their association with reducing the risk of breast cancer and slowing the signs of aging. Claims that soy “feminizes” men are not supported by scientific research; an analysis of 38 clinical studies found no negative effects in men.
What changes with the new decision?
The Supreme Court ruling bans the use of the term “milk” for plant-based products, requiring clearer labeling such as “oat drink” or “plant-based drink.” The same regulation also applies to terms such as cream, butter, cheese, and yogurt.
Oatly UK & Ireland has expressed disappointment, arguing that the measure creates confusion for consumers and inequality in the market.
Meanwhile, legal representatives emphasize that manufacturers should use clear descriptions to avoid ambiguities.
Oat milk remains a popular and convenient alternative for many people, especially those avoiding dairy. However, not all products are created equal. Some versions contain added oils and sugars that can affect health if consumed frequently.
The best choice depends on individual nutritional needs – and careful label reading. /GazetaExpress/
t7 live
