Experts Warn Teens Have 10% Lower Bone Density as Sedentary Lifestyles Weaken Bones
Updated
Updated · The Independent · Jul 4
Experts Warn Teens Have 10% Lower Bone Density as Sedentary Lifestyles Weaken Bones
1 articles · Updated · The Independent · Jul 4
Summary
Teenagers today have about 10% lower bone density than teens in the 1970s and 1980s, experts say, warning that weaker bones could raise later-life risks of osteoporosis and fragility fractures.
Sedentary habits and deficiencies in vitamin D, calcium and weight-bearing exercise are driving the decline, while bone formation also naturally slows from the mid-30s.
More forceful loading appears key: a University of Bristol study found impacts above 4.2 times body weight were linked to higher hip bone mineral density, while lower-impact activity offered little benefit.
Experts recommend calcium, vitamin D and adequate protein alongside heavy strength training, sprinting or hard jumping, with one or two sessions a week enough for beginners.
The stakes extend beyond fractures: regular physical activity can cut falls by 77% and hip fractures by 24%, while bone health also affects movement, metabolism, brain health and immunity.