why does chemotherapy cause hair loss and nausea

Many people on chemotherapy (chemo) may experience and. Many chemo medications cause the release of a substance called
and other chemicals. This release can be a signal that activates the "vomiting center" in your brain. The and Acute: Anticipatory: Occurs as a conditioned response, meaning it happens in response to stimulus that has caused or in the past, such as the sight or smells of the treatment room Certain chemo medicines are more likely than others to cause and. Chemo medications are classified as minimal, low, moderate, or high in terms of the chance they will cause. If the chemo prescribed for you is associated with a moderate to high probability of and, your doctor will likely recommend appropriate support medicines to control the. Discuss your chemo with your doctor and care team. Ask what the likelihood is that you will experience and as a result of your treatment. What Can Be Done to Manage Nausea and Vomiting? Medicines for controlling and are called. Some of these medications block the signal in the brain and gut that causes and. Your doctor may have you try more than one medication before finding the prescription that works best for you.


There are also several things you can do at home to prevent or control and Eat 5 to 6 smaller meals, rather than 3 large meals, throughout the day. Eat foods that are easy to digest. Foods that are not as likely to upset your stomach include plain crackers, rice, and toast. Avoid onions, garlic, coffee, and other strong-smelling foods. Avoid being around food as it is being cooked. Wait at least 1 hour after your chemo before eating or drinking anything. Consume foods and drinks at room temperature or cool. If you feel the urge to vomit, try slow, deep breathing. You may be able to distract yourself by reading, watching television, or doing a relaxing hobby. Ask your doctor about medicine for controlling and during and after chemo. and bring it to your next doctor's visit. Cancerous tumors are characterized by cell division, which is no longer controlled as it is in normal tissue. "Normal" cells stop dividing when they come into contact with like cells, a mechanism known as contact inhibition. Cancerous cells lose this ability. Pictures of cancer cells show that cancerous cells lose the ability to stop dividing when they contact similar cells.


Cancer cells no longer have the normal checks and balances in place that control and limit cell division. The process of cell division, whether normal or cancerous cells, is through the cell cycle. The cell cycle goes from the resting phase, through active growing phases, and then to mitosis (division). The ability of chemotherapy to kill cancer cells depends on its ability to halt cell division. Usually, cancer drugs work by damaging the RNA or DNA that tells the cell how to copy itself in division. If the cancer cells are unable to divide, they die. The faster that cancer cells divide, the more likely it is that chemotherapy will kill the cells, causing the tumor to shrink. They also induce cell suicide (self-death or apoptosis). Chemotherapy drugs that kill cancer cells only when they are dividing are called cell-cycle specific. Chemotherapy drugs that kill cancer cells when they are at rest are called cell-cycle non-specific. The scheduling of chemotherapy is set based on the type of cells, rate at which they divide, and the time at which a given drug is likely to be effective. This is why chemotherapy is typically given in cycles.


Chemotherapy is most effective at killing cells that are rapidly dividing. Unfortunately, chemotherapy does not know the difference between cancer cells and the normal cells. The "normal" cells will grow back and be healthy but in the meantime, side effects occur. The "normal" cells most commonly affected by chemotherapy are the blood cells, the cells in the mouth, stomach and bowel, and the hair follicles; resulting in low blood counts, mouth sores, nausea, diarrhea, and/or hair loss. Different drugs may affect different parts of the body. Chemotherapy (anti-neoplastic drugs) is divided into five classes based on how they work to kill cancer. Although these drugs are divided into groups, there is some overlap among some of the specific drugs. Further sections discuss several different types of chemotherapy in the effort to further explain these important procedures. More Chemotherapy Information: Chemocare. com is designed to provide the latest information about chemotherapy to patients and their families, caregivers and friends. For information about the 4th Angel Mentoring Program visit

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