For decades, osteoporosis treatment focused on slowing bone loss, but a newer class of medications called anabolic agents takes a fundamentally different approach: they actively stimulate the growth of new bone tissue. This shift represents one of the most significant advances in bone health management, offering new hope for patients at high risk of fractures.

What's the Difference Between Old and New Osteoporosis Treatments?

Traditional osteoporosis medications, known as antiresorptive agents, work like a brake on bone loss. They slow down the rate at which your body breaks down bone tissue, helping to preserve what you already have. While effective for many people, they don't actually create new bone.

Anabolic agents work differently. "They go a step further by stimulating new bone formation, which can make bones stronger and reduce the risk of fractures," explained Rachel Fishman Oiknine, MD, a board-certified endocrinologist affiliated with MDVIP in St. Louis. These medications activate specialized cells called osteoblasts that are responsible for building new bone.

"It's much like when we were younger and still growing our skeletons. Some of this new bone actually reconnects parts of the bone that have separated from each other, sort of like filling in a pothole or connecting two parts of a walkway back together after a part has broken away," said Susan Bukata, MD, chair of the department of orthopedic surgery at the University of California in San Diego.

Susan Bukata, MD, Chair of Orthopedic Surgery at University of California San Diego

This repair mechanism is particularly important because it doesn't just add density to bones; it actually restores structural integrity that may have been compromised by osteoporosis .

Which Anabolic Medications Are Currently Available?

The U.S. Food and Drug Administration (FDA) has approved three anabolic therapies for osteoporosis treatment :

• Abaloparatide (Tymlos): Approved in 2017, this medication mimics the parathyroid hormone and stimulates bone-building cells. It's administered as a daily injection, typically in the stomach area.
• Teriparatide (Forteo): Approved in 2002, this was the first anabolic agent available. Like abaloparatide, it mimics parathyroid hormone and is given as a daily injection in the stomach.
• Romosozumab (Evenity): Approved in 2019, this monoclonal antibody works by a different mechanism, inhibiting a protein called sclerostin while also slowing bone loss. It's administered as a monthly injection at a healthcare provider's office.

Who Should Consider Anabolic Therapy?

Anabolic agents aren't prescribed as a first-line treatment for everyone with osteoporosis. Instead, they're reserved for patients at high or very high risk of fracture. According to Dr. Bukata, these include people who have already experienced at least one fracture, those with very low bone density (a T-score of negative 2.8 or lower on a bone mineral density test), and those who continue losing bone despite taking other bone-strengthening medications .

Dr. Bukata

This targeted approach makes sense because anabolic medications are more expensive and require more frequent monitoring than traditional treatments. Reserving them for high-risk patients ensures they're used where they can have the greatest impact.

What Are the Potential Side Effects and Contraindications?

While anabolic agents are generally considered safe, they do carry risks that patients should understand before starting treatment. Common side effects include nausea, headache, dizziness, and injection site reactions. Some patients experience elevated calcium levels in the blood or urine, joint and bone pain, muscle spasms, or swelling in the ankles, hands, or feet .

Certain groups of people should not take these medications. Dr. Fishman Oiknine noted that anabolic agents "may not be recommended for people with certain bone diseases, a history of radiation to the skeleton, or bone cancer." Additionally, romosozumab may increase the risk of heart problems in people with cardiovascular issues and should not be used by those who've had a heart attack or stroke within the previous year .

Dr. Fishman Oiknine

Dental work also requires special consideration. There is an increased chance of severe jaw problems when taking these medications, so patients should inform their dentist about their treatment.

How to Prepare for Anabolic Osteoporosis Treatment

Before starting an anabolic agent, have a thorough conversation with your doctor about your specific situation:

• Fracture Risk Assessment: Ask whether you're at high risk of fracture based on your bone density levels and other personal risk factors.
• Medication Selection: Discuss which specific anabolic medication your doctor recommends and why it's the best choice for your situation.
• Monitoring Requirements: Clarify what type of monitoring you'll need during treatment, including how often you'll need bone density tests and blood work.
• Insurance Coverage: Confirm whether your insurance will cover the medication, as these drugs can be expensive.
• Supplement Interactions: Ask whether you can continue taking calcium or vitamin D supplements while on the medication.
• Treatment Duration: Understand how long you'll need to take the medication and what you might take next if you stop.
• Non-Medication Options: Ask about any non-pharmaceutical treatments, such as exercise or dietary changes, that should accompany your medication.

How Do Arthritis and Osteoporosis Differ?

Many people confuse osteoporosis with arthritis, but they're distinct conditions affecting different parts of your skeletal system. Arthritis is inflammation of the joints, the places where two bones meet. It causes pain, stiffness, swelling, and reduced movement. Osteoporosis, by contrast, weakens the bones themselves, making them fragile and prone to fracture .

The key difference is that arthritis is often symptomatic early on, while osteoporosis is frequently called a "silent disease" because many people don't notice symptoms until a bone breaks. However, it's possible to have both conditions at the same time, which requires a combined treatment approach focusing on pain relief, bone strength, and mobility .

Understanding this distinction matters for treatment. While arthritis management focuses on reducing inflammation and pain, osteoporosis treatment aims to strengthen bones and prevent fractures. The emergence of anabolic agents represents a significant step forward in that goal, offering patients a way to not just maintain their bones but actively rebuild them.