Yogurt is a cornerstone of healthy diets around the world as it is a rich source of protein, calcium and vitamins, in addition to containing beneficial bacteria that promote digestive health.
But despite this positive reputation, yogurt has faced increasing criticism in recent years, especially from diet experts who warn that some types contain "hidden" sugars that may exceed what you imagine.
With so many varieties on the market—Greek, natural, low-fat, fat-free, and flavored—choosing the right one can be a real challenge. In this report, nutritionist Laura Perez helps us resolve this dilemma, offering an objective assessment of the most common types and practical tips for selecting the best option for your health.
Greek yogurt – a protein option but high in saturated fat
Greek yogurt is characterized by an intensive straining process that removes the whey, which increases its protein content and helps build muscle and curb hunger. However, this type contains more than a third of the recommended daily amount of saturated fat, and it may also be low in calcium because most of it is in the whey that has been removed.
Despite its lower sugar content of less than a teaspoon, Perez warns against "Greek-style" varieties (products made to resemble Greek yogurt in texture and taste, but which do not undergo the same intensive filtering process) which may be high in sugar and fat without high protein.
Natural full-fat yogurt – a good balance of elements
This type offers moderate calories of 72 calories, three times less saturated fat than Greek, with a protein content equivalent to half an egg and a much higher calcium content of up to 166 mg per serving.
Although it contains slightly more sugar than the Greek version, the amount is still around a teaspoon, which is an acceptable price for the nutritional benefit.
Perez advises against being fooled by labels that say "live" or "bio," because this does not necessarily guarantee a beneficial effect of probiotics (live microorganisms, such as beneficial bacteria and yeasts, that support gut and digestive health), as the body's response to fermented foods varies from person to person.
Low-fat yogurt – double the sugar for limited benefits
This type is a classic example of adding sugar to compensate for the loss of flavor caused by fat removal. It contains almost twice the sugar of Greek yogurt and more than a quarter of the daily limit for added sugars, while providing a negligible amount of saturated fat and calories compared to the full-fat version. Its only redeeming feature is its high calcium content of 183 mg, the second highest among the types evaluated.
0% Fat-Free Greek Yogurt – The perfect choice for protein and calories
This type stands out as an exceptional option for those looking for protein, as it contains 10.3 grams per 100 grams, more than double that of natural yogurt, with the fewest calories (54 calories), the lowest sugar content (3 grams), and is completely free of saturated fat.
Perez says it's the strongest option for those who prioritize protein and reducing saturated fat, but she notes that removing fat may reduce fat-soluble vitamins such as A and D.
Kefir (fermented milk) yogurt – potential gut benefits but high in sugar
Kefir differs from regular yogurt in that it contains a mixture of bacteria and yeasts, which may offer potential digestive benefits such as improved lactose digestion. However, it contains approximately two teaspoons of sugar per serving, negating any appetite-suppressing benefits.
Perez cautions against exaggerated claims about its ability to "reset" or "heal" the gut, noting that the benefits depend on the individual bacterial composition of each person's gut.
Flavored yogurt – more of a dessert than a healthy food
With its candy-like taste, fruit-flavored yogurt contains five times the sugar of nonfat yogurt and one teaspoon more than a small Kit Kat. It's also among the highest in calories (102 calories) and lowest in protein and calcium.
Perez points out that it's not a "bad" food in itself, but should be considered within the context of other nutrients in a daily diet. She suggests instead eating plain yogurt with added fresh fruit to control the sweetness and benefit from the fiber and vitamins.
In conclusion, the evaluation of different types reveals that fat-free Greek yogurt is the most balanced option, especially for those focused on protein and reducing saturated fat. Flavored and low-fat varieties lag behind due to their high sugar content and lower nutritional value. The expert's most important advice is to choose plain, unsweetened yogurt and add fresh fruit yourself. It's also important to remember that yogurt isn't a magic cure for gut health, its benefits vary from person to person, and overall dietary balance is key.
