British media reports indicate this panic has spread globally. Before Belle's shutdown, over 300,000 women worldwide had used these substandard products.
French government investigations revealed Belle used unapproved silicone to manufacture breast implants. This industrial-grade silicone is suitable for computers, cookware, and mattresses, but not for medical applications.Regarding the scandal of Bellis selling substandard breast implants, British and French authorities took differing stances. On December 23, 2011, the French government announced that although no evidence currently links these silicone implants to increased cancer risk, it urged 30,000 French women to have the implants removed as soon as possible, with the government providing financial support.Meanwhile, UK government officials stated that there was no evidence proving the silicone implants were carcinogenic or chemically toxic, thus no reason to require women with such implants to undergo surgical removal.
Domestic media reported that the controversial silicone implants had entered the Chinese market as early as 2009, with the number of users unknown. However, sales department personnel indicated that to date, no issues had been reported among domestic users of Bellis breast augmentation products.Silicone is a highly active adsorbent material classified as an amorphous substance. It is insoluble in water and any solvent, non-toxic, odorless, and chemically stable, reacting only with strong alkalis and hydrofluoric acid.Since its synthetic method was invented in 1919 by Walter A. Patrick, a chemistry professor at Johns Hopkins University in the United States, humans have mastered production techniques such as reacting sodium silicate with sulfuric acid to create silicone products suitable for various applications.Silica gel is commonly used as a desiccant. Many electronic products, leather goods, clothing, food items, and pharmaceuticals include a separate packet labeled "Do Not Eat," as it can irritate the respiratory system, digestive system, skin, and eyes.Color-changing silica gel is produced by soaking silica gel in a cobalt chloride solution, followed by drying and activation. When used as a desiccant, it appears blue before absorbing moisture and turns red afterward. This color change indicates the degree of moisture absorption and whether regeneration is required.
Beer silica gel adsorbs proteins causing beer cloudiness within minutes, extending beer shelf life. Medical-grade silica gel serves as a widely used biomaterial in cosmetic surgery, with solid silicone rubber currently predominant in applications such as nasal implants, artificial jaws, cranial bone patches, and breast implants.
First introduced in cosmetic surgery in 1963, silicone breast implants have become the most widely used biomaterial for breast augmentation and post-mastectomy reconstruction. Over the past half-century, approximately 2 million Americans have received silicone breast implants, with three-quarters used for augmentation and one-quarter for reconstruction.Since silicone implants entered clinical use, concerns about their safety have remained a sensitive topic of discussion. Key points of debate include postoperative infection, implant rupture, capsular contracture, immune disorders, and potential carcinogenicity—though causation for the latter two remains inconclusive.
Researchers conducted silicone testing on local tissues of silicone breast implant recipients and non-recipients. They found significantly higher silicone levels in the local tissues of implant recipients compared to the control group. However, there were no significant differences in silicone levels in blood, surrounding tissues, or breast milk between the two groups, indicating no systemic effects.Domestic scholars observed 21 early-stage breast cancer patients who underwent immediate breast reconstruction via autologous tissue transfer or silicone implant placement after skin-sparing mastectomy. They found that both reconstruction methods had similar effects on cellular immune function, with neither significantly impacting patients' immune responses.
Although concerns about silicone implants causing cancer persist, no conclusive evidence has yet been established to prove that silicone is carcinogenic.The U.S. Food and Drug Administration (FDA) issued a warning on January 26, 2011, stating that silicone breast implants may be associated with an increased risk of anaplastic large cell lymphoma (ALCL). This warning was based on an evaluation of published literature from January 1997 to May 2010.However, the report also noted that the incidence of anaplastic large cell lymphoma is extremely rare, with a very low prevalence among women who have undergone silicone implant surgery. Women considering such procedures are advised to consult with relevant specialists regarding the risks involved.
Long-term observational data from Europe, the Americas, Australia, and other regions demonstrate that silicone implant placement does not cause breast cancer or other tumors. In fact, breast cancer incidence and mortality rates among implant recipients are lower than among those without implants. This is attributed to implant recipients typically having smaller breast tissue, placing them in a group with inherently lower breast cancer risk.
The French company Belle's production and sale of silicone breast implants using unapproved silicone constitutes illegal activity. The issue is that, to date, relevant authorities have not disclosed whether these industrial-grade silicone products contain harmful substances or the quantities involved.Epidemiological studies analyze disease incidence rates within specific populations. Determining whether substandard silicone implants cause cancer ultimately requires confirming the presence of carcinogens. For instance, cobalt chloride added to silicone desiccants as a moisture indicator has been linked to potential carcinogenicity in studies. However, due to its pronounced color effect, cobalt chloride is unlikely to be used in silicone breast implant manufacturing.