New research reveals a significant link between milk consumption and heart disease risk in women, though men appear unaffected

A recent study suggests that milk, a staple in many diets, may pose an unexpected health risk for women. Conducted by scientists at Uppsala University in Sweden, the study found that regular milk consumption is linked to an increased risk of heart disease in women, while men showed no such risk. Researchers believe the lactose in cow’s milk may trigger harmful inflammation and cellular damage, potentially accelerating heart ageing and elevating the risk of coronary heart disease.

Using data from over 101,000 participants, the study found that women who drank 400ml of milk daily—equivalent to around two-thirds of a pint—faced a 5% higher risk of heart disease. The risk rose with increased milk intake, with women consuming 600ml per day experiencing a 12% increase and those consuming 800ml daily seeing their risk rise by 21%.

This link between milk consumption and heart health has surprised many, as milk has long been valued for its nutritional benefits, especially in bone health due to its calcium content. However, the study suggests that lactose, the natural sugar found in milk, may be more difficult for women to digest, potentially causing inflammation that affects cardiovascular health. Men, by contrast, appear to digest lactose more efficiently, which may explain their lower risk.

In the UK, where approximately 2.3 million people suffer from coronary heart disease, such findings carry substantial implications. On average, British people consume around 1.2 litres of milk per week, making milk a common element in daily diets. While the exact mechanism behind milk’s impact on heart health is still under study, this research highlights the importance of dietary awareness, particularly for women at risk of cardiovascular disease.

The study’s findings suggest that those who consume large amounts of milk daily, especially women, should consider moderating their intake or exploring alternative milk options. For those concerned about their heart health, the researchers recommend consulting with a healthcare provider to discuss dietary choices.