In the last two years, many significant advancements have occurred and witnessed, as far as cancer treatment is concerned, and one change that has come in the oncology sector is proton therapy. Proton therapy is a highly advanced form of radiation treatment that gives targeted treatment with important reductions in long-term side effects. As we try to grasp the complexities of the treatment as well as its implications for patients, we spoke with Dr Sapna Nangia, Director and Head of the Neck and Breast Department of Radiation Oncology at Apollo Proton Cancer Centre.In this article, Dr Nangia speaks on how proton therapy works, its benefits over conventional radiation therapies, its suitability for children and adults, and the promising results that have been produced for patients globally.What is Proton Therapy?Proton therapy is one form of radiation treatment that uses protons, or positively charged particles, to treat cancer. Unlike other types of radiation, such as X-rays, that traditionally were used for irradiation, proton therapy uses targeted irradiation delivered right onto the cancer cells to minimize damage to surrounding healthy tissues. "Proton therapy lets us deposit radiation more precisely, sparing normal tissues to a much greater degree," Dr Nangia emphasized. That is, this precision enables the treatment of cancers located near critical organs without risking collateral damage most likely to cause severe side effects.Is Proton Therapy Treatment less side effectively?One of the major disadvantages of the traditional forms of radiation therapy is that it often damages the normal tissues around the cancerous area, and thus, a lot of side effects are observed-the inability to swallow, skin irritation, and extended complications later on. By proton therapy, the beam stops precisely at the location of the cancer. "Thus, by sparing normal tissues, we're not only improving the comfort of a patient during treatment but also enhancing their quality of life post-treatment," says Dr Nangia.Patients who are treated with proton therapy are expected to lead normal lives and work again. This is one of the biggest benefits for cancer survivors. According to Dr Nangia, "Much later in life, patients who have undergone proton therapy are more likely to return to their routine occupation and regimen without further complications following radiation treatment." This makes the proton therapy a yet more significant advantage for cancers in sensitive parts such as the brain, neck, and liver, as noted.Role of Proton Therapy Treatment for KidsProton therapy becomes all the more important in the case of pediatric patients with cancer. In treating children, oncologists have to take care of the immediate effects of cancer treatment; they also have to focus on the future impact on the child's developing body. As Dr Nangia puts it, "When we treat pediatric cancers, we are not only addressing the present; we are planning for the patient's next 40-50 years of life."Proton therapy means such growing tissues and organs receive minimized unnecessary radiation. The risk of secondary cancers years later because of radiation treatment is reduced. "Children who undergo proton therapy benefit hugely because the reduced radiation exposure lowers their risk of developing radiation-induced secondary cancers later in life," says Dr Nangia.Since pediatric cancers make up the largest number of patients receiving treatment at Apollo Proton Cancer Centre, the hospital has become a prominent facility in providing proton therapy to young patients. This also means not only a better survival prognosis but an healthier future for children and their families.Proton Therapy for 'Targeted' CancerThe treatment of more people with prostate, brain, head, and neck cancers is more commonly associated with proton therapy. However, it has also emerged as a promising treatment modality for breast and liver cancers. Dr Nangia is optimistic about the treatment of patients with breast cancer, especially at risk from cardiac disease. "In patients at risk of cardiac disease due to the treatment of left-sided breast cancer, proton therapy can reduce the potential risk to the heart," she says.Even in the case of patients who have liver cancer, proton treatment targets the tumors precisely and causes less damage to the healthy parts of the liver. This would reduce the chances of liver failure, a condition with which the patients usually suffer due to conventional radiation treatment for liver cancer. "The liver is a very sensitive organ, and proton therapy enables us to treat the tumor without compromising the remaining healthy tissue," adds Dr Nangia.The most misleading thing about cancer treatment is that all radiation therapies can cause hair loss and other systemic side effects. However, explained by Dr Nangia, proton therapy is more localized, hence affective only in an area that is being targeted. "For example, if we are treating a tumor in the tonsil or neck, then the radiation is confined to the area; hair loss isn't a concern, unless the head or scalp is being treated."She further elaborates that the localized aspect of proton therapy does not contribute to most of the systemic side effects chemotherapy and traditional radiation provides. So that patients could tolerate the treatment much better.Positive Outcomes of Proton Therapy and Successful Patient StoriesSince its inception five years ago, at Apollo Proton Cancer Center we have provided proton therapy to 1,600 patients. Results are seen to be generally excellent, with patients returning to normal, cancer-free lives. Dr Nangia recalls that there was a very inspired case of a lady whose skull base tumor was inoperable. "Her tumor was compressing all the nerves of her eye, causing her complete loss of vision. After proton therapy, she gained partial vision and resumed her work as a software professional and leads a cancer-free life," said Dr Nangia.Those success stories do not end there. Patients from more than 32 countries come to seek treatment to Apollo Proton Cancer Centre. They are Indian, Sri Lankan, Bangladeshi, Nepali citizens, among many more. It is thus witnessed that this cutting-edge treatment modality has acquired world recognition. For a majority of these patients, protons mean not only defeating cancer but also regaining quality of life after treatment.It is a recently introduced technology in India with immense scope. According to Dr Nangia, "This technology is a boon to patients in India who had to go all the way to Europe or the U.S. for proton therapy." With specific programmes and substantive academic support, Dr Nangia and her team has been continuously pioneering the entry of proton therapy into more lives.Increasingly, greater awareness on the benefits of proton therapy in cancer treatment will make this cutting-edge treatment approach accessible to more patients in India and neighboring countries with a good possibility of survival and opening up even better prospects in life.Proton therapy is changing the landscape in the delivery of cancer treatments, offering an effective, highly targeted option that spares healthy tissues and minimizes long term side effects. It's a promising pathway to recovery for the majority of adult patients, not to forget pediatric cancer patients. Thousands of patients in India are now given access to this advanced treatment, thanks to the pioneers like Dr Sapna Nangia. Ultimately, we must dream of a future where this cancer treatment shall be more precise, less invasive, and above all, more hopeful.