Tuesday, 22 May 2018
According to a recent report published by the Centers for Disease Control and Prevention (CDC), insect-borne diseases in the US have tripled over a period from 2004 through 2016. Ticks, mosquitoes, and fleas are the most common carriers of diseases. These types of biting insects are referred to as vectors. Since 2004, nine additional insect-borne diseases were discovered in the USA. With worldwide weather patterns changing, the longer hotter summer seasons are thought to be one of the leading causes of the increase in vector-borne diseases. Warm weather influences the breeding habits as well as the expansion of the territories of mosquitoes, ticks, and fleas. Additionally, increased intercontinental travel and reforestation of suburban areas expose more people to insects and wildlife carrying these vectors.
Tuesday, 24 April 2018
Healthy skin is the first barrier to prevent any wounds and it is the crucial component in would repair. The skin is the largest organ in the body and it is a mirror of the health of the body’s internal organs. In addition to protection of inner tissue structures, the skin helps in regulation of body temperature and elimination of metabolic waste products. It is estimated that 6.5 million people in the US struggle with slow wound healing because of various reasons which include diabetes, obesity, and long-term disability such as stroke, spinal cord injury, and multiple sclerosis.
Tuesday, 03 April 2018
Everybody has experienced wounds either after an injury or surgery and most of the wounds heal naturally in an otherwise healthy person. A wound that does not heal or does not show signs of healing after two weeks is considered a slow-healing or a chronic wound and requires special care from a wound care facility to prevent infection and further complications and to accelerate the recovery process.
Tuesday, 20 March 2018
Bone fractures are one of the most painful injuries and require a lengthy recovery time. Everyone is at an equal risk of breaking a bone either from a fall, sports activities, or a car accident. However, bone fractures are more common and take longer to heal in people suffering from osteoporosis. The most common bone fracture, especially in active adults and children, is a broken leg and often involves a tibial (or shinbone) fracture. In the US, approximately 492,000 tibial fractures are reported every year resulting in close to 400,000 hospital days. The usual time for healing a tibial fracture could be as long as 12 to 16 weeks. This is due to a high incidence of complications requiring strong painkillers for the patient.
Tuesday, 06 March 2018
It is a popular perception that calcium and vitamin D are essential nutrients for healthy bones. However, few people are aware that bone health largely depends on its protein foundation – the collagen fibers. The alignment of collagen fibers within the bone (its “internal skeleton”) determine how calcium and other minerals are deposited, and therefore healthy collagen is the basis of the strength and stability of the entire bone.
Tuesday, 20 February 2018
The skeletal system is made up of bones and joints and provides support, mobility, and protection to various organs in the body. We are born with more than 300 bones. Many of them, such as the skull bones, fuse together and as an adult we have 206 bones. The largest bone in the human body is the femur (thigh bone) and the smallest bones in the human body are the three bones of the middle ear. Maximum bone growth occurs during childhood and puberty, and tapers off as the person approaches 16-18 years of age. While the bones do not grow in size after 18-20 years, they do not remain just as stagnant, hard and inert structures. Continuous metabolic processes called bone remodeling, during which bone is resorbed and formed again occur throughout our life. A major role in this process is played by specialized cells in the skeletal system called osteoblasts which are bone lining cells, and osteoclasts which are bone dissolving cells. Our entire skeleton is renewed every few years and it is estimated that at any time about 20% of an adult bone is undergoing remodeling.
Tuesday, 06 February 2018
We are exposed to a variety of infectious agents in the environment such as bacteria, viruses, and parasites. One of the recently published studies indicates that viruses can spread from one person to another through very fine air particles exchanged just by breathing.1 The tiny particles stay suspended in the air for a long time, even when the person may not be symptomatically ill. That means a sick person does not need to be coughing or sneezing to spread the virus. Any seasonal change challenges our immune system with new pathogens; therefore, our immune system needs to be functioning at its optimum to fight infectious agents.
Tuesday, 16 January 2018
Influenza (flu) season in the northern hemisphere starts in late fall and peaks in winter. Flu is a common viral disease and affects up to 20% of the world’s population every year. This year the flu season has become more severe and serious. In most cases the flu is benign but it can also have serious consequences, especially in people with compromised immune systems, the elderly, and children. Worldwide, the flu is estimated to cause 250,000 to 500,000 deaths each year.
Thursday, 07 December 2017
Approximately half the population in western countries takes supplements on a daily basis. Women, children, a growing aging population, and increasing consumer awareness about general health heavily contributes to the popularity of supplements. The global supplement market is $82 billion and the US contributes $37 billion to that number. Faced with countless options and a worldwide market, choosing supplements can be overwhelming. Rarely are consumers supplied with sufficient scientific information upon which to base their decisions and they usually rely on a company’s marketing materials.
Thursday, 02 November 2017
Bone cancer is the cancer originating primarily from the bone and its surrounding tissue. However, the most common form of cancer in the bones is from metastasis from another primary cancer at a different organ. Osteosarcoma is the most common primary bone cancer followed by chondrosarcoma, Ewing’s sarcoma, fibrosarcoma and others.
Tuesday, 17 October 2017
In the previous issue of our Health Science News Page, we learned about a normal lymphatic system. Here we will explore cancer of the lymphatic system - lymphoma. Every three minutes in the United States one person is diagnosed with some type of blood cancer such as that affecting the white blood cells (leukemia), the lymphatic system (lymphoma) and the bone marrow (myeloma).
Tuesday, 03 October 2017
The lymphatic system is an extremely important system in the body and working in conjunction with the circulatory system it helps with the elimination of toxins and other waste materials from the body. The lymphatic system consists of various organs, lymphatic ducts, and lymph nodes, and it transports a clear fluid called lymph. The lymph and the lymphatic system does not receive the same attention as that of the blood circulation, and remains a mysterious entity for many.
Wednesday, 20 September 2017
In our last issue of the Health Science News Page, we discussed the hazards of radiation exposure. Body imaging through X rays and CT scans are extremely essential and can be lifesavers in many cases of emergencies. However, due to non-invasive, fast and painless ways of diagnosing, X rays and CT scans have been used in excessive amounts. In the past few decades, everyone gets excessive and unmeasured radiation exposure through sources such as substances in the earth’s crust and space, microwave ovens, electric power lines, radio signals, cell phones, airport scanners and even transcontinental flights. A recent study highlighted that even the minimal dose of radiation received from these sources has a cumulative effect and is proven to lead to damage to cellular DNA, which could lead to cancers decades after the exposure.
Wednesday, 06 September 2017
Early detection of health problems is very important in diagnosing or sometimes eliminating disease at its onset. Over the last decades, various imaging techniques such as X-rays, ultrasounds, MRI (Magnetic Resonance Imaging) and CT or CAT scans (Computerized Assisted Tomography) have been developed and applied for diagnostic as well as therapeutic medical care. However, in recent years many doctors, and especially radiologists, became concerned with overuse of certain diagnostic techniques -, in particular those that expose patients to radiation.
Friday, 18 August 2017
Despite ever increasing prescriptions for the cholesterol-lowering drugs knows as statins, cardiovascular disease continues and is expected to increase 40% worldwide by 2030. Atherosclerosis, the underlying cause of heart attacks and strokes, causes a staggering 17 million deaths each year. This disease persists because conventional medicine has consistently failed to address its root causes; instead it focuses merely on its symptoms by mechanical lowering of blood cholesterol levels, blood pressure, and blood sugar with drugs. It is now becoming evident that targeting blood cholesterol has not been successful in controlling heart disease.
Thursday, 06 July 2017
In the last issue of our Health Science News Page we discussed aspects of skin cancer and the damage caused by excessive sun exposure. The most common risk factor of non-melanoma skin cancer is excessive exposure sunlight. However, it is important to note that the non-melanoma skin cancers, basal and squamous cell carcinomas are not as lethal as melanoma which can also occur on areas of the skin not exposed to the sun. Sun exposure can cause free radical damage in the skin cells leading to DNA damage and skin ageing, and may eventually cause skin cancer, however, that is not the only risk factor.