A notable increase in osteopenia, a precursor to brittle bone disease, is being observed among adults under 50, with medical experts pointing to several common lifestyle factors as primary drivers. Osteopenia is characterized by lower-than-normal bone mineral density, which weakens the skeleton and increases the risk of fractures. While often asymptomatic, it can progress to osteoporosis if left untreated.
Understanding Osteopenia
Osteopenia is diagnosed through a DEXA scan, which compares a patient's bone mineral density to that of a healthy adult. Unlike osteoporosis, which may necessitate medication, osteopenia can often be improved with lifestyle adjustments, including weight-bearing exercises and adequate intake of calcium and vitamin D. The progression to osteoporosis is not inevitable and depends on various factors including age, genetics, hormone levels, and lifestyle choices. Heavy alcohol consumption, lack of exercise, and poor nutrition are identified as significant contributors.
Experts emphasize that osteopenia and osteoporosis should not be viewed as unavoidable consequences of aging. Dr. Richie Abel, associate professor of musculoskeletal sciences at Imperial College London, suggests that osteoporosis could be considered a disease of childhood, stemming from insufficient bone development in younger years. Peak bone mass is typically reached between ages 25 and 30, making early adulthood a critical period for building strong bones through healthy habits and avoiding detrimental factors like smoking.
Lifestyle Triggers for Younger Adults
Several factors are believed to be fueling the rise in osteopenia among younger individuals. A primary concern is low vitamin D and calcium levels. Vitamin D is crucial for the body to absorb calcium and other bone-strengthening minerals. Today's younger generations, who often spend more time indoors and are less physically active, may not be building the strongest possible skeletons. Reduced outdoor exposure, a primary source of vitamin D, and obesity, which can sequester the vitamin, exacerbate this risk.
Smoking and excessive alcohol consumption are also significant contributors to accelerated bone loss. Smoking reduces protective oestrogen levels and impairs the body's utilization of calcium and vitamin D. Heavy drinking disrupts bone formation and calcium absorption.
Low oestrogen levels, particularly in women, are another key factor. While oestrogen naturally declines after menopause, it can also drop earlier due to premature menopause (before age 45) or premature ovarian insufficiency (before age 40). Cancer treatments like chemotherapy and surgical removal of ovaries can also deplete oestrogen. Additionally, conditions affecting hormone production, such as eating disorders, being significantly underweight, or excessive exercise, can lead to reduced oestrogen.
Professor Alex Comninos, a consultant endocrinologist, notes that when oestrogen levels fall prematurely, bone breakdown can exceed bone rebuilding, leading to weaker bones susceptible to fractures. He frequently treats women in their 20s, 30s, and early 40s with low bone density attributed to anorexia, insufficient calorie intake for intense exercise, or POI, often recommending hormone replacement therapy (HRT).
Autoimmune conditions like coeliac disease also play a role. Coeliac disease damages the small intestine, hindering the absorption of essential bone nutrients like calcium and vitamin D. Studies indicate that a significant percentage of new coeliac patients exhibit low bone density.
Reversing and Preventing Bone Loss
Medical professionals stress that a diagnosis of osteopenia is a call to action rather than a cause for panic. Simple modifications in diet, vitamin D supplementation, exercise, and, when necessary, hormone therapy or medication can halt the progression of osteopenia and, in some instances, improve bone strength.
Kirsty Carne, senior specialist osteoporosis nurse at the Royal Osteoporosis Society, advises avoiding smoking and limiting alcohol intake due to their negative impact on bone health. Exercise is highlighted as one of the most effective interventions. Weight-bearing activities like walking, dancing, and jogging, as well as resistance training, stimulate bone formation by placing stress on the skeleton, prompting bone-building cells to create denser, more resilient bone. Activities that improve balance and muscle strength, such as tai chi, can also reduce the risk of falls.
Harriet Kelsall, diagnosed with osteopenia at 46 after a fall, implemented lifestyle changes including HRT, high-dose vitamin D, regular exercise (Peloton, running, weight training), reduced refined sugar, and increased protein intake. Her experience underscores the importance of proactive measures in managing bone health, even for those who previously believed such conditions only affected older individuals. Similarly, Phoebe Lieling was diagnosed with osteoporosis at 24 due to premature menopause and undiagnosed coeliac disease. Through HRT, dietary changes, supplements, and strength training, she managed to restore her bone density to normal levels by age 30, demonstrating the potential for recovery and improved bone health with appropriate interventions.