Oxygen, dandruff, texting, etc.
Where does oxygen come from?
Oxygen, which makes up about 20 percent of the air we breathe in, is an odorless, colorless, tasteless gas, that is essential for the production of energy and, therefore, to life. Its main source is from living green plants. The ambient air we inhale is absorbed by the lungs which “extracts” and filters oxygen, which then combines with hemoglobin (red pigment in blood cells). The resultant oxyhemoglobin is circulated throughout the body by the pumping action of the heart to supply oxygen to the entire body. Some tissues in our body are more sensitive than others to oxygen deprivation. The brain is super-sensitive to lack of oxygen. It “dies” in about 3-4 minutes after oxygen delivery ceases (as in suffocation, drowning, or cardiac arrest).
What causes dandruff?
The cause of dandruff is not known in majority of cases. Excessive greasiness of the skin and hair among adolescents has been found to initiate dandruff. The contributory factors implicated include heredity, diet, hormonal imbalance. The existing dandruff can be aggravated by stress and emotional turmoil. A vacation or rest may totally eliminate dandruff. Anti-dandruff shampoos (coal-tar based or those containing selenium suplphide or zinc pyrithione) have been prescribed by physicians to arrest dandruff. Overzealous use of this shampoos is not recommended.
Why do breasts enlarge during pregnancy?
This is nature’s way of preparing the mother for breastfeeding. The placenta makes a lot of estrogen, which, in combination with the other hormones from the pituitary (Prolactin) and other glands, cause the ducts in the breasts to grow larger and form more branches. At the same, progesterone, also secreted by the placenta, stimulates the breasts glandular tissues to enlarge. The alveoli (sacs) are lined with milk-producing cells, and the colostrum (first milk), and the subsequent milk, flows into the collecting ducts and out through the nipples. The estrogen and progesterone (secreted by the placenta) actually inhibit milk production. Immediately after delivery and expulsion of the placenta, the suppression-effect of these two hormones are gone, and milk is secreted, as the
Prolactin from the Pituitary Gland stimulates milk
production. Indeed, the complex (and yet simple) physiology of the human body is mind-boggling. With all the artificial organs being invented, nothing, even todate, can beat Mother Nature.
What is dyslexia?
“Word blindness” is a term commonly used to
describe this condition where the person, starting from childhood, ad extreme difficulty with reading and writing. About 10% of children are dyslexic, and more common among boys. Dyslexia, which may be inherited, is caused by a localized brain lesion, where there is a certain number of brain cells being “faulty,” or there is delayed or incomplete development of the brain. These children are NOT brain damaged. Usually these youngsters are not recognized as dyslexic and may be thought of as lazy, disobedient, bored,
problem kids and be relegated to the background as dumb. Early detection is important for those affected to be able to benefit from special schooling and catch up in their learning skills. With early and proper training, many of them can grow up to be very successful individuals.
What causes lead poisoning among children?
Ingestion of lead is the obvious cause, and the sources could be inhaling lead form the leaded paint used inside, say, a classroom, where children stay for hours. In the United States, it is a legal
requirement to use only unleaded paint, especially in schools, etc. Toddlers can also get poisoned by the paint chips from cribs, toys, pencils and other objects with lead. Parents can prevent poisoning in general by being aware and being cautious of the environment and items their children as exposed to. They can never be too careful when it comes to their children’s health.
Is text messaging bad for our health?
Anything in excess, even water, oxygen, talking, food, rest, etc, is bad for us. Wise and appropriate use of cell phones and their nice features, like text
messaging, (in moderation) does not pose any health hazard to the user. Cell phones and text-messaging are technological wonders of our times, which, when utilized properly, provide great convenience, advantage, and security for the users and their family and friends. Exceptions to this is the use of cell phone while driving or doing activities that require full
attention. Accidental deaths have been reported form improper use of cell phones. While on a night out, 100 percent attention on your date is a must. In this
situation, the repeated use of a cell phone for calls, or frequent text-messaging, could hazardous not only to user’s physical health but to the relationship. Besides, this unwelcome practice is rude and anti-social, vehemently frowned upon in polite society.
Are female tampons safe?
If used properly, yes, the new tampons are fairly safe. In 1978, a worldwide phenomenon called Toxic Shock Syndrome (TSS) was first described, with symptoms ranging from high fever, skin rash, fall in blood pressure, severe eye infection, headaches, disorientation, joint and muscle pains, diarrhea and kidney failure. The victims were females (average age 23) having their normal menstrual period. A number of deaths from TSS has been reported. Implicated was the use of super-absorbency tampons, which acted as a culture medium for the staphylococcal infection in the vagina. The longer the tampon was left in the vagina, the greater the risk. The toxin or poison produced by the staphylococci caused the serious illness described above. Most patients recovered after appropriate treatment of intravenous fluids and antibiotics, but at a later stage lost the skin of their palms and soles, the face and even the tongue. Mortality rate for TSS is about 2 or 3 percent. Tampons should be changed 3 to 4 times a day, even if not fully stained to prevent TSS. This makes it a bit too expensive. A time-proven safer alternative is the use of sanitary pads.
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