Saturday, January 27, 2018

Second-Hand Plastic Toys Contain Toxic Elements That May Harm Your Child

Findings of a new study have revealed that plastic used in some second-hand toys may pose health hazards to children and does not meet safety guidelines.

Toxic Elements In Second-Hand Toys

In a new study published,  researchers tested 200 used plastic toys in thrift shops, nurseries, and homes for hazardous elements.

Using X-ray fluorescence technology to analyze these toys, which include trains, cars, figures, and puzzles, the researcher found that 20 of about 200 second-hand plastic toys tested had traces of nine elements, which include barium, bromine, cadmium, chromium, antimony, lead, and selenium. Some had concentrations that are too high to meet safety standards.

Potential Health Effects On Children

The elements can be chronically toxic if children are exposed to them at low levels over an extended period of time.

Arsenic is a toxin linked to developmental defects, neurotoxicity, skin lesions, cardiovascular conditions, and even cancer. Cadmium is a hormone disruptor associated with breast cancer. 

Exposure to lead can jeopardize the brain and the nervous system.

Children who put these toys in their mouth could be exposed to greater amount of toxins. All the toys tested for the study were small enough to be chewed by children.

"Previously used toys has the potential to create a legacy of chemical contamination for younger children," the researcher said.

The worst offenders were found to be yellow, red, and black plastics. The researcher noted the Lego bricks from the '70s and '80 are among those found to have high levels of toxic chemicals. The researcher said that toys were not tested in those days, but they are handed down.

Consumers Need To Be Aware Of Risks

Second-hand toys make an attractive option for families because they can be handed down by friends or relatives. They are also priced cheaply at charity stores, flea markets, and the internet.

The researcher said that with lack of regulation to cover the resale and recycling of older toys, consumers should at least be aware of the potential harms these toys pose to children.

"While there is no retroactive regulation on second-hand toys, consumers should be aware that old, mouthable, plastic items may present a source of hazardous element exposure to infants," the researcher wrote in his report.

Another potential danger of buying second-hand toy is the possibility of buying items that have been recalled in the past.

"Avoid buying used toys that have no packaging or that are missing some type of label or brand identification, without which it might be difficult or impossible to tell if the toy has been recalled," researcher advised.


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Monday, August 13, 2012

Colorectal Cancer

Exploded view of the human colon


What Is Colorectal Cancer ?
 when found early, it is highly curable. This type of cancer occurs when abnormal cells grow in the lining of the large intestine (colon) or rectum.
Colonoscopy image of a polyp on the colon lining
Symptoms
Colorectal cancers often begin as polyps -- benign growths on the interior surface of the colon. The two most common types of intestinal polyps are adenomas and hyperplastic polyps. They develop when there are errors in the way cells grow and repair the lining of the colon. Most polyps remain benign, but some have the potential to turn cancerous. Removing them early prevents colorectal cancer.


Factors  Beyond Your Control
Your risk of colorectal cancer depends on genetics and lifestyle. Factors you can't control include:
Age -- most patients are older than 50
Polyps or inflammatory bowel disease
Family history of colorectal cancer
History of ovarian or breast cancer


Factors You Can Control
 By Avoiding-
Diet high in red or processed meats, or meats cooked at high temperatures
Being overweight (excess fat around the waist)
Exercising too little
Smoking or drinking alcohol



Warning Signs
There are usually no early warning signs . For this reason it's important to get screened. Detecting cancer early means it's more curable. As the disease progresses, patients may notice blood in the stool, abdominal pain, a change in bowel habits (such as constipation or diarrhea), unexplained weight loss, or fatigue. By the time these symptoms appear, tumors tend to be larger and more difficult to treat.

Close-up of colon polyp removal procedure



Screening
Because colorectal cancer is stealthy, screenings are the key to early detection. Beginning at age 50, most people should have a colonoscopy every 10 years. This procedure uses a tiny camera to examine the entire colon and rectum. These tests not only find tumors early, but can actually prevent colorectal cancer by removing polyps (shown here).


 Virtual Colonoscopy
There is now an alternative to colonoscopy that uses CT scan images to construct a 3-D model of your colon. Called virtual colonoscopy, the procedure can reveal polyps or other abnormalities without actually inserting a camera inside your body. The main disadvantage is that if polyps are found, a real colonoscopy will still be needed to remove and evaluate them.


X-Rays of the Colon (Lower GI)
Barium X-Rays of the colon  allows your doctor a glimpse at the interior of the colon and rectum, offering another way to detect polyps, tumors, and changes in the intestinal tissue. Like the virtual colonoscopy, any abnormalities that appear on the X-rays will need to be followed up with a conventional colonoscopy.

SEM micrograph of colon cancer cells

Diagnosing Colorectal Cancer
If testing reveals a possible tumor, the next step is a biopsy. During a colonoscopy, your doctor will remove polyps and take tissue samples from any parts of the colon that look unusual. This tissue is examined under a microscope to determine whether or not it is cancerous. Shown here is a color-enhanced, magnified view of colon cancer cells.


 Staging Colorectal Cancer
If cancer is detected, it will be "staged," a process of finding out how far the cancer has spread. Tumor size may not correlate with the stage of cancer. Staging also enables your doctor to determine what type of treatment you will receive.
Stage 0 -- Cancer is only in the innermost lining of the colon or rectum.
Stage I -- Cancer has not spread beyond the inner wall of the colon or rectum.
Stage II -- Cancer has spread into the muscle layer of the colon or rectum.
Stage III -- Cancer has spread to one or more lymph nodes in the area.
Stage IV -- Cancer has spread to other parts of the body, such as the liver, lung, or bones. This stage does NOT depend on how deep the tumor has penetrated or if the disease has spread to the lymph nodes near the tumor.



Surgery
In all but the last stage of colorectal cancer, the usual treatment is surgery to remove the tumor and surrounding tissue. In the case of larger tumors, it may be necessary to take out an entire section of the colon and/or rectum. The good news is that surgery has a very high cure rate in the early stages. If the cancer has spread to the liver, lungs, or other organs, surgery is not likely to offer a cure -- but removing the additional tumors, when possible, may reduce symptoms.



Treating Advanced Colorectal Cancer
When colorectal cancer has spread to one or more lymph nodes , it can still sometimes be cured. Treatment typically involves a combination of surgery, radiation  and chemotherapy. If the cancer comes back after initial treatment or spreads to other organs, it becomes much more difficult to cure. But radiation and chemotherapy may still relieve symptoms and help patients live longer.



Coping With Chemotherapy
Chemotherapy has come a long way from the days of turning people's stomachs. Newer drugs are less likely to cause this problem, and there are also medications to control nausea if it does occur.


Radiofrequency Ablation
Radiofrequency ablation (RFA) uses intense heat to burn away tumors. Guided by a CT scan, a doctor inserts a needle-like device that delivers heat directly to a tumor and the surrounding area. This offers an alternative for destroying tumors that cannot be surgically removed. In patients with a limited number of liver metastases that cannot be removed by surgery, chemotherapy is sometimes combined with RFA for tumor destruction.






How To Prevent Colorectal Cancer:
1) Diet
There are steps you can take to dramatically reduce your odds of developing colorectal cancer. Researchers estimate that eating a nutritious diet, getting enough exercise, and controlling body fat could prevent 45% of colorectal cancers. It is recommended to have a low-fat diet that includes plenty of fiber and at least five servings of fruits and vegetables per day.


2) Exercise
Physical activity appears to be a powerful weapon in the defense against colorectal cancer. In one study, the most active participants were 24% less likely to have the cancer than the least active people. It didn't matter whether the activity was linked to work or play. It is recommended exercising five or more days a week for at least 30 minutes a day.







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