How Does HIV Affect Your Bones?
HIV (human immunodeficiency virus) can make people more likely to get osteoporosis, a condition where bones become fragile and break more easily. Several things can increase this risk.
These include some HIV medicines, getting older, smoking, not being active, having low testosterone (a hormone that helps build bone), or having hepatitis C (a virus that affects the liver). Some HIV medications, especially older ones like the first version of Tenofovir, may slightly reduce bone strength.
Early bone loss is called osteopenia. If it is not treated, it can turn into osteoporosis. Treating it involves living a healthy life, taking vitamin D and calcium supplements, and sometimes taking medicine to stop bones from getting weaker.
Why Do People with HIV Have Weaker Bones?
Bones are not just hard structures in the body. They are living tissues that have a honeycomb-like shape and contain fluids. As people age, the body cannot replace old bone fast enough, so bones become weaker.
Losing too much bone leads to osteoporosis, where bones are fragile. A smaller amount of bone loss is called osteopenia. Research shows that people with HIV often have weaker bones. They are about twice as likely to have osteoporosis or break a bone compared to people without HIV.
Many factors can increase this risk:
People with HIV may have habits that harm bones, such as smoking, drinking alcohol, using opioids (strong pain medicines), low testosterone, or not getting enough calcium or vitamin D.
HIV itself may cause bones to weaken. Studies show that as HIV gets worse, bone problems become more common.
Some HIV medicines, like tenofovir disoproxil fumarate, can cause bone loss. Other medicines, such as protease inhibitors, are still being studied for their effects on bones.
Because HIV treatments have improved, many people with HIV are living longer. Almost half of Americans with HIV are now over 50. Bone loss usually begins in the 40s or 50s and, for women, speeds up after menopause.
How to Keep Your Bones Strong with HIV?
There are steps people with HIV can take to keep their bones strong:
Eat a healthy diet: Include foods high in calcium and vitamin D. Examples are milk, cheese, broccoli, sardines, tofu, almonds, egg yolks, fish, and liver. If needed, take supplements of calcium and vitamin D.
Exercise: Do weight-bearing activities, like walking or lifting weights. These help bones stay strong.
Do not smoke and limit alcohol: Smoking makes bones weaker. Drinking too much alcohol also hurts bones and can make falling more likely.
Get regular bone checks: A bone density test, like a DEXA (dual-energy X-ray absorptiometry) scan, can show how strong the bones are.
Learn about bone health: Understand how bones work and how factors like early menopause can affect them.
Bone Screening and Treatment in HIV
Doctors often recommend a bone mineral density test for people with HIV when women reach menopause or men reach 50. This test shows how strong the bones are compared to those of young, healthy adults. It helps determine if someone has osteoporosis or osteopenia.
Treating osteoporosis in people with HIV is very similar to treating it in other people. Doctors may suggest lifestyle changes and fixing vitamin D deficiencies. They usually recommend calcium and vitamin D supplements for osteopenia.
For managing severe osteoporosis, doctors may prescribe bisphosphonates, which help slow down further bone loss and strengthen the bones. These medicines slow down bone loss. However, women who want to have children should not take them. Most people only take these medicines for about five years because of possible long-term side effects.
How Does HIV Change Bones?
People with HIV often have bones that are less dense and more fragile. Bone destruction can cause serious pain for many people.
The main reason for bone destruction is that certain cells called osteoclasts become more active. Osteoclasts are cells that break down old bone.
HIV can make osteoclasts more active in several ways:
The virus can enter osteoclasts directly or through infected T cells (a type of immune cell). After infection, a chemical called TRAP (tartrate-resistant acidic phosphatase) increases, which makes more osteoclasts. HIV proteins may also play a role in this process.
HIV affects T cells in the bone environment, disturbing the normal balance. This can lower bone density and cause bone pain.
HIV weakens the immune system, changing the levels of cytokines (chemical messengers in the body). This affects RANKL, a protein that controls osteoclast activity, causing more bone breakdown.
Chronic inflammation and changes in the immune system reduce vitamin D levels, which interfere with calcium and phosphorus in the body, making bones weaker.
Other reasons for bone loss include hormone imbalances, poor nutrition, and less activity of preosteoblasts (cells that help build new bone).
What Are the Effects of HIV Treatment on Bone?
Highly active antiretroviral therapy (HAART) is used to treat HIV. Anti-retroviral therapy is also used to prevent infection in some cases. People taking Tenofovir Disoproxil Fumarate (TDF) may have lower bone turnover (slower bone rebuilding). This happens because the OPG/RANKL/RANK system (a system that controls bone building and breakdown) is affected.
Other effects of HIV medicines include:
More lactic acid in the body can cause loss of calcium from bones.
Drugs like Ritonavir (RTV) and Saquinavir (SQV) change the TRAF6 protein, which increases osteoclast activity and bone breakdown.
What Are the Effects of HIV on the Bones and Joints?
HIV can cause minerals like calcium and vitamin D to drop. This can lead to osteomalacia (soft bones) or osteoporosis (weak bones).
These conditions may lead to:
Bones are breaking easily.
Pain and tenderness in joints.
Changes in posture.
Trouble moving joints.
Muscle pain.
Conclusion
HIV is a very serious viral infection. It weakens the immune system and changes how the body uses minerals. HIV proteins and changes in immune cells can make bones lose minerals. HIV also lowers vitamin D in the body. Some HIV medicines can also cause loss of bone minerals.
Taking care of bones with healthy habits, regular exercise, proper diet, supplements, and medical guidance can help prevent serious bone problems in people living with HIV.
Key Takeaway:
HIV can make bones weaker and increase the risk of osteoporosis or fractures, especially as people get older or take certain HIV medications.
Maintaining a healthy diet, exercising regularly, avoiding smoking and excessive alcohol, and getting routine bone density checks can help protect your bones.
If you are living with HIV and want to learn the best ways to keep your bones strong, consult our HIV and bone health specialist doctors at icliniq.com for personalized guidance and support.
