In a promising development for aging populations worldwide, Chinese researchers have found that a simple post-workout habit — drinking milk — may help protect bones in later life.
The study suggests that combining exercise with milk intake could reduce the risk of life-threatening fractures among older adults.
As the global population continues to age, maintaining muscle strength and bone density has become a major health concern. Millions of people worldwide are living with osteoporosis, a condition that weakens bones and increases fracture risk.
Even more people may be affected by osteopenia — the early stage of bone fragility. Estimates suggest that around 40% of individuals over the age of 50 may suffer from osteopenia, making them vulnerable to future bone-related complications.
Health experts have long emphasized the role of regular exercise, particularly resistance and balance training, in combating musculoskeletal diseases. However, researchers now say nutrition — specifically milk consumption — may further enhance these protective benefits.
The findings were published in the Journal of Nutrition, Health & Aging, where researchers examined whether protein intake after exercise could support bone health in older adults.
Scientists noted that protein plays a crucial role in bone strength. It enhances calcium absorption — a mineral essential for maintaining strong bones — and may reduce fracture risk in the event of falls during old age.
Both cow’s milk and soy milk were identified as convenient and effective sources of protein.
How the study was conducted
The study involved 82 healthy adults aged 60 years and older. All participants were free from medical conditions that could influence protein intake or bone metabolism.
They completed an eight-week exercise program consisting of three weekly sessions of resistance and balance training.
Four study groups
After enrollment, participants were divided into four groups:
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Exercise only
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Exercise plus nutrition education
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Exercise, nutrition education, and additional cow’s milk intake
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Exercise, nutrition education, and additional soy milk intake
The first two groups did not receive any additional dietary intervention and continued their regular diets.
Milk intake and nutrition details
Participants in the cow’s milk group consumed 240 ml of low-fat milk one hour after finishing their workout. Those in the soy milk group received a slightly smaller amount to ensure both groups consumed approximately 7 to 8 grams of protein per session.
To maintain a balance between protein and carbohydrates, both milk groups also ate 60 grams of boiled sweet potatoes after each training session.
This structured nutritional approach was maintained throughout the eight-week program.
Key findings: Milk made the difference
After eight weeks, all four groups showed a significant improvement in walking speed, highlighting the clear benefits of regular resistance and balance training.
However, the most notable difference was observed in participants who consumed cow’s milk after exercise. In addition to improved physical performance, they also demonstrated enhanced bone strength.
Researchers concluded that combining vigorous exercise with milk intake may be an effective strategy to prevent bone weakness and reduce fracture risk among older adults.
What this means for older adults
The findings highlight the growing importance of pairing nutrition with physical activity to protect aging bones.
While exercise alone improved mobility and physical performance, adding milk — particularly cow’s milk — appeared to provide additional bone-strengthening benefits.
As osteoporosis and osteopenia remain major public health challenges, such simple, accessible dietary habits may offer meaningful support in maintaining musculoskeletal health in later life.
