CT Scans (Computed Tomography)
CT scans are an important diagnostic tool used to identify and monitor many medical conditions. They rely on ionizing radiation, which is higher than that of a standard X-ray. Exposure to ionizing radiation can cause cellular damage, and repeated or unnecessary CT scans may slightly increase long-term cancer risk, particularly in children and young adults.
For this reason, CT scans should be used only when medically justified, and alternative imaging methods should be considered when appropriate. In most cases, however, the diagnostic benefit outweighs the potential risk.
MRI (Magnetic Resonance Imaging)
MRI is a widely used and highly effective imaging technique that does not use ionizing radiation. Instead, it relies on strong magnetic fields and radio waves to produce detailed images of internal structures.
MRI procedures are generally considered safe, but they pose serious risks for individuals with certain implanted metal objects or electronic medical devices, such as pacemakers, cochlear implants, or some bone-growth stimulators. All patients should be carefully screened before undergoing an MRI.
In some cases, a contrast agent called gadolinium is used to improve image clarity. While gadolinium-based contrast agents are usually well tolerated, allergic reactions can occur, and people with impaired kidney function may face additional risks. For most patients, the agent is safely eliminated from the body.
PET Scans (Positron Emission Tomography)
PET scans are commonly used in oncology and other medical fields to assess metabolic activity in tissues. The procedure involves the injection of a radiotracer, often a glucose-based compound, which emits positrons that can be detected by the scanner.
PET scans do involve ionizing radiation, both from the radiotracer and, in many cases, from a combined CT scan. The radioactive material used has a short half-life, meaning most of the radiation exposure is temporary and diminishes within hours to a day. As with CT scans, PET imaging should be performed only when clinically indicated, especially if repeated scans are anticipated.
Liver Flushes (Personal Experience and Perspective)
So-called “liver flushes” — often involving apple juice, Epsom salt, olive oil, and citrus juice — are promoted in some alternative health circles as a way to cleanse the liver or gallbladder. These practices are not supported by scientific evidence, and there is no proof that they remove gallstones or improve liver function.
Based on my personal experience, I performed two liver flushes years ago and subsequently experienced gallbladder discomfort and sleep disturbances that took several years to resolve. While this experience is anecdotal, it has led me to believe that such practices may place unnecessary stress on the digestive system.
The liver naturally produces and recycles bile efficiently without the need for flushing. Anyone experiencing liver or gallbladder symptoms should seek evaluation from a qualified healthcare professional rather than attempting unsupervised cleansing protocols.
Conclusion
Medical imaging procedures such as CT, MRI, and PET scans play a crucial role in modern healthcare. While each carries specific risks, these are generally well understood, carefully managed, and outweighed by their diagnostic value when appropriately used. At the same time, unproven alternative practices can carry their own risks and should be approached with caution.
Informed decision-making, medical guidance, and individualized risk assessment remain essential to protecting long-term health.