Milk Does a Body Good: Why Adults Should Keep It on the Menu

Calcium remains important throughout adulthood, not just in childhood. Men require at least 1,200 mg of calcium daily, yet most fall substantially short — particularly active individuals whose calcium losses through sweat are higher. A single glass of milk contributes significantly toward this requirement. Vitamin D, which is absent from most adults' diets without supplementation, works synergistically with calcium to strengthen bone mineral density and reduce the risk of osteoporosis. This matters increasingly as Singapore's indoor, office-bound population has widespread vitamin D insufficiency.

High-intensity exercise depletes energy, fluids, and electrolytes significantly. An 8-ounce (240 ml) glass of milk contains approximately 9 grams of complete protein — providing all essential amino acids required to initiate muscle repair and synthesis after exercise. Milk also contains sodium and potassium in quantities that replenish the electrolytes lost through sweat. Multiple sports nutrition studies have found milk to be as effective as commercial sports drinks for post-workout recovery — and considerably less expensive.

The 2018 PURE study published in The Lancet analysed dairy intake across 136,000 individuals in 21 countries. The findings were striking: those consuming at least two servings of dairy daily had a 22% lower risk of heart disease, a 34% lower risk of stroke, and a 23% lower risk of cardiovascular death compared to those consuming little or no dairy. The cardiovascular benefit appeared to be driven by the combination of vitamin D, vitamin K2, calcium, and bioactive peptides that influence blood pressure regulation and arterial stiffness. For those with existing high cholesterol, choosing low-fat dairy variants preserves the benefit while reducing saturated fat intake.

Research from the University of Kansas found that older adults who consumed dairy regularly had significantly higher levels of glutathione in the brain — a powerful antioxidant that reduces oxidative stress, supports memory function, and is associated with slower cognitive ageing. Low glutathione is implicated in neurodegenerative conditions including Parkinson's and Alzheimer's disease. While research is ongoing, the finding adds another dimension to the case for maintaining dairy intake through adulthood.