Is Drinking Milk Essential for Adults? A Comprehensive Look at the Debate
“Drink milk if you want to grow strong,” is a phrase many of us heard repeatedly during our childhood. But as adults, we must ask ourselves: Is this advice still relevant? For some, a glass of milk before sleep invokes nostalgic comfort; for others, it serves as an expendable or even problematic item in their diet. The reality is that milk occupies a central role in a debate where nutritionists, doctors, and scientific studies often disagree.
Can You Continue Drinking Milk?
The short answer is yes, provided you don’t have an allergy or intolerance. Nutrition specialist Dr. María Ortega from the Complutense University of Madrid explains in an interview with Men’s Health: “Removing dairy products without justification is a mistake. It’s challenging to achieve adequate nutrient intake without dairy.” Similarly, dietitian Julia Farré points out that milk provides high-value proteins, calcium, and vitamins A and D.
However, as noted by researchers Giuseppe Russolillo and Leticia López in Cuidateplus, the answer also depends on cultural background and genetics. In Europe, dairy consumption has been prevalent for centuries, leading to a lower incidence of lactose intolerance.
Milk Defenders
Milk advocates stress its protein value: 80% casein, which absorbs slowly, and 20% whey, which absorbs quickly. This composition ensures a steady supply of amino acids. Additionally, the Healthline portal indicates that milk contains 18 of the 22 essential nutrients, including calcium, phosphorus, potassium, and vitamins A and B12. The portal further claims that milk consumption is linked to better appetite control, prevention of type 2 diabetes, and cardiovascular benefits.
Dietitian Vedika Premani indicates that a daily glass of milk is an effective remedy against osteoporosis and age-related bone mass loss. Furthermore, fellow dietitian Sara Langnas highlights milk’s utility as a recovery drink due to its rich protein and carbohydrate content after exercise.
Opposing Views Among Experts
Not all experts share the enthusiasm for milk. A study by CIBEROBN researchers found that high consumption of whole milk was associated with increased cognitive decline in adults at risk for cardiovascular disease. This correlation was not observed with low-fat milk, yogurt, or cheese.
From Harvard, professors David Ludwig and Walter Willett have challenged the recommendation for three daily servings of dairy. In an article published in the New England Journal of Medicine, they pointed out that countries with higher dairy consumption also report more hip fractures. They also warned of potential links to an increased risk of prostate and endometrial cancers.
Not All Dairy Comes from Cows
Recently, plant-based drinks—such as soy, oat, almond, and rice milks—have shifted from being lactose-free alternatives to widely accepted options. However, as noted by Xataka, most of these beverages contain less protein and essential amino acids compared to cow’s milk and often include higher levels of added sugars. This reduction in nutritional value can result from the Maillard reaction that occurs during processing.
Dietitian Julia Farré asserts that these alternatives, unless fortified, usually provide less calcium, vitamin D, and quality proteins than cow’s milk. Nevertheless, experts featured by Vogue have stated that when enriched versions are chosen, these beverages can be valid options—also considering the growing importance of environmental sustainability in consumer choices.
Lactose Intolerance: A Significant Factor
Beyond the benefits and risks, individual tolerance significantly influences milk consumption. Lactose, the natural sugar in milk, is digested with the help of the lactase enzyme. As detailed by Leticia López in Cuidateplus, “Phylogenetically, it would be natural to lose this enzyme with age, but a genetic polymorphism allows many people to continue producing it throughout their lives.” Consequently, lactose intolerance affects populations differently: only about 5% in Northern Europe versus 95% in parts of Asia. In Spain, the rates range between 20% to 30%.
Symptoms can range from gas and abdominal pain to diarrhea. However, as Julia Farré notes, “It is not usually a 100% intolerance: many individuals can tolerate yogurt or aged cheeses, which contain less lactose.”
If You Choose Not to Drink Milk
Experts agree: milk is not essential. According to Vogue, calcium can also be obtained from green leafy vegetables (like kale, broccoli, and spinach), legumes, canned fish (like sardines and salmon), calcium-fortified tofu, or fortified plant-based drinks. Yogurt and cheese, often better tolerated due to their lower lactose content, can also serve as alternatives.
Conclusion
Science does not present a unified response; it offers a consensus: milk is not essential but not dangerous when consumed in moderation and depending on individual tolerance. For those feeling fine after consumption, milk can remain a practical, nutritious, and culturally significant part of the diet. For those who don’t consume it, there are ample alternatives available to meet calcium, protein, and vitamin needs. Ultimately, the key is to listen to our own bodies—because the real question might not be whether milk is good or bad, but whether it suits you personally.