We all love a refreshing soft drink now and then, but are you aware of the hidden risks to your bone health? While sodas are often linked to weight gain and diabetes, their impact on bones is frequently overlooked. Here’s what science reveals about the connection between soft drinks and bone density loss.
How Soft Drinks Impact Bone Health
A growing body of research links high soft drink consumption to reduced bone health. For instance, a seven-year study by the National Library of Medicine found a correlation between frequent soft drink intake and increased risk of fractures. The American Journal of Clinical Nutrition similarly reported that cola consumption can lower bone mineral density, especially in women, making bones more fragile over time.
Caffeine and Phosphoric Acid: A Harmful Combo
Soft drinks typically contain caffeine and phosphoric acid, which together can be harmful to bones. Caffeine hinders calcium absorption, while phosphoric acid accelerates calcium loss through urine. Losing calcium without replenishing it can lead to thinning bones or even osteoporosis.
Dr. Ramkinkar Jha, Chief and Unit Head of Orthopaedics at Artemis Hospitals, Delhi, explains, “Caffeine and phosphoric acid can harm bone density. Caffeine reduces calcium absorption, especially in those with low intake, and phosphoric acid further lowers calcium levels.”
Women Are at Higher Risk for Bone Damage
Women, particularly postmenopausal women, are more susceptible to osteoporosis due to natural drops in estrogen that protect bone density. Regular soda consumption can accelerate bone thinning, putting women at higher risk for fractures as they age.
According to Dr. Kiran Kharat, Senior Consultant Orthopaedic Surgeon at Ruby Hall Clinic, Pune, “Women and teenagers are especially vulnerable. During adolescence, calcium is critical for building strong bones, and sodas interfere with that. Postmenopausal women face declining bone density, and sodas make it worse.”
The Role of Sugar in Calcium Deficiency
Sugary sodas do more than just add calories—they can also impact calcium levels. High sugar intake raises insulin, causing the body to excrete more calcium through the kidneys. Consequently, regular soda drinkers may experience calcium deficits.
“People addicted to sugary sodas tend to consume fewer calcium-rich drinks like milk, further lowering their calcium intake,” says Dr. Jha. This shift can weaken bones over time.
Are Diet Sodas Safer? Not Necessarily
If you think diet or zero-sugar sodas are a healthier choice for your bones, think again. Though they lack sugar, these drinks still contain caffeine and phosphoric acid, which can be equally damaging to bone density.
“Even diet sodas have caffeine and phosphoric acid, which lower calcium levels, making bones weaker,” Dr. Kharat points out.
The Bottom Line: Limit Your Soda Intake for Stronger Bones
Both regular and diet soft drinks may contribute to bone density loss, leading to increased risks of fractures and osteoporosis. Health experts suggest limiting soda intake and opting for calcium-rich beverages to protect your bone health in the long run.