Yogurt, a common staple in many households, offers a range of nutritional benefits, but experts caution that not all varieties are created equal. Dieticians emphasize the importance of selecting the right type to maximize health advantages, particularly concerning protein and calcium content, while being wary of added sugars, especially in low-fat and flavored options.
Laura Perez, Nutrition Lead at Simple Online Pharmacy, states that yogurt is generally beneficial due to its high protein content, which promotes satiety, and its calcium levels. However, she notes that the nutritional profile can vary significantly between products.
Protein and Calcium Content
Greek yogurt, known for its straining process that concentrates protein, offers a substantial amount of this macronutrient, contributing to muscle growth and satiety. However, this straining can also reduce calcium content, as whey, the source of much of the calcium, is removed. Some Greek yogurt varieties analyzed contain over a third of the recommended daily intake of saturated fat, which is linked to an increased risk of heart attack. Perez advises caution with 'Greek style' yogurts, which may be higher in sugar and fat without the elevated protein.
Full-fat natural yogurts, such as Yeo Valley Bio Live Organic Natural Yoghurt, offer a balance of moderate calories, lower saturated fat compared to some Greek yogurts, and a more significant calcium boost. While they contain slightly less protein than some Greek options, they provide a considerable amount of calcium, nearly a third of the recommended daily intake.
The Pitfalls of Low-Fat and Flavored Yogurts
Low-fat natural yogurts often compensate for reduced fat and flavor with added sugars. A sample M&S Low Fat Natural Yoghurt contained nearly double the sugar of a comparable Greek yogurt, contributing significantly to the daily limit of free sugars. Despite saving only a small amount of saturated fat and calories, these yogurts offer minimal additional protein. The primary benefit of some low-fat options is their calcium content.
Flavored yogurts, like Onken Mango, Papaya and Passionfruit Biopot Yoghurt, are often likened to desserts due to their high sugar content. These can contain five times the sugar of some 0% fat Greek yogurts and are among the most calorific options, with low protein and calcium levels.
Zero-Fat Greek Yogurt and Kefir
For those prioritizing protein and lower saturated fat, 0% fat Greek yogurt, such as FAGE Total 0%, stands out. It offers a high protein content, is low in calories and sugar, and contains no saturated fat. Perez notes this as a strong option for many, though the reduced fat content might impact the absorption of fat-soluble vitamins and may affect creaminess.
Kefir, a fermented milk drink similar to thin yogurt, is recognized for its diverse microorganisms and potential digestive benefits. While kefir is rich in protein and calcium, some varieties contain a substantial amount of sugar, which can negate some of its health advantages. Experts advise approaching claims of gut healing with caution, as individual responses to fermented foods can vary.
Sugar Tax and 'Live' Cultures
Government initiatives are also targeting high-sugar yogurts, with a sugar tax set to extend to sweet yogurt drinks starting in January 2028. Consumers are also cautioned against being solely swayed by labels advertising 'live' or 'bio' cultures. While these indicate the presence of live cultures, they do not guarantee a beneficial probiotic effect, and the impact of probiotics on gut health is not universal.