Are Growth Factors Safe for Long Term Use?
Growth factors are proteins in the body that help cells grow, divide, and repair tissues. Doctors use them to treat conditions like growth hormone deficiency in children, eye diseases, and even some brain disorders. But people wonder if using them for many years is safe.
In children with growth hormone deficiency, a growth factor called somapacitan was tested for seven years. Kids who took it grew taller over time. Most finished the study without big problems. Side effects matched what doctors saw in shorter studies. Some kids switched from daily shots to this once-a-week version and still grew well. Serious issues were rare and only sometimes linked to the drug.
Mouse studies show mixed results. One type of growth factor, IGF-1, helped mice with early aging live longer when given as treatment. These mice had less severe aging signs. But too much or too little growth hormone balance can affect lifespan in complex ways.
In people with Alzheimer’s disease, doctors tried stem cells plus growth factors like BDNF, VEGF, and IGF-1. They gave three doses over two months. Patients felt tired or had mild fever right after, but nothing serious happened. No tumors or rejection showed up in checks up to six months. Still, experts say longer tracking is needed to spot hidden risks like abnormal cell growth.
For eye treatments, anti-VEGF drugs, which block a growth factor, work well and safely as cheaper copies of name-brand ones. They help with vision problems without major safety flags.
A new drug blocking nerve growth factor was tested in healthy adults. It was safe in early trials with no big issues.
Overall, short-term use looks safe in these studies. Long-term data is limited, mostly from kids’ growth treatments over seven years. Risks like tumors or overgrowth are possible but not seen yet. More years of watching are needed, especially for adults or other uses.
Sources
https://academic.oup.com/jes/article/10/1/bvaf189/8339959
https://www.pnas.org/doi/10.1073/pnas.1002696107
https://pmc.ncbi.nlm.nih.gov/articles/PMC12689718/
https://onlinelibrary.wiley.com/doi/10.1111/apa.70400?af=R
https://bpspubs.onlinelibrary.wiley.com/doi/10.1111/bph.70317
