Search Results for: label/hormones
Hormonal birth control explainer: a matter of health
…levels of these four hormones drive what we think of as the menstrual cycle, which exists to prepare an egg for fertilization and to make the uterine lining ready to receive a fertilized egg, should it arrive. Fig. 1. Female reproductive anatomy. Credit: Jeanne Garbarino. In the theoretical 28-day cycle, fertilization (fusion of sperm and egg), if it occurs, will happen about 14 days in, timed with ovulation , or release of the egg…
Authored by Emily Willingham on March 5, 2012
Biology Explainer: The big 4 building blocks of life–carbohydrates, fats, proteins, and nucleic acids
…e X Extra: A triglyceride can have up to three different fatty acids attached to it. Canola oil, for example, consists primarily of oleic acid, linoleic acid, and linolenic acid, all of which are unsaturated fatty acids with 18 carbons in their chains. Why do we take in fat anyway? Fat is a necessary nutrient for everything from our nervous systems to our circulatory health. It also, under appropriate conditions, is an excellent way to store up…
Authored by Emily Willingham on June 8, 2012
Plan B now available to younger teens
The age group that needs it most. by Emily Willingham In December of 2011, Kathleen Sebelius, the Obama Administration’s Health and Human Services secretary, shocked the reproductive health community by blocking a bid to make Plan B, or “morning after” contraception, available over the counter (OTC) to teens under age 17. The much-anticipated OTC availability of this intervention to this age group had already received FDA…
Authored by Emily Willingham on April 5, 2013
After Newtown missteps, journalists get guidelines
Protip: Don’t diagnose based on speculation. by Jessica Wright Attention journalists: If you’ve been calling people “nuts” or “deranged” in your stories, the Associated Press is recommending that it’s time you stopped. This guideline — along with the common-sense assertion that writers shouldn’t diagnose individuals with a mental illness based entirely on speculation — is part of a new recommendation added to the AP styleboo…
Authored by DXS Contributor on March 27, 2013
As Seen on TV! Restoring Hair with LASERS!!!!!!
The author’s rapidly-expanding forehead. Anyone who watches TV, reads magazines, or flips through catalogs has seen some interesting products. Maybe they seem plausible to you, maybe they don’t. However, a little investigation shows they are based less on science and well…actually working, and more on wishful thinking. At worst they’re actual con-jobs, designed to separate you from your money as efficiently as p…
Authored by Matthew R Francis on September 28, 2012
Pregnancy 101: My placenta looked like meatloaf, but I wasn’t about to eat it.
…of us are involved in policing the neighborhoods, some of us build structures, some of us communicate information, some of us deal with food, some of us get rid of waste, etc. Every cell gets a job (it’s the only example of 100% employment rates!). Now back to the cells in the fertilized egg. As they start to learn what their specific job will be, the cells within the sphere will start to organize themselves. After about 5 days after fertil…
Authored by Jeanne Garbarino on July 27, 2012
Women suffer from brain injuries, too
…d say, ‘You can tell Mom anything in the morning, because she won’t remember it later,’” says Corry with a chuckle. She is quiet for a moment, then sighs. “Which, of course, is very sad.” Each year in the United States, about 1.7 million experience some version of Corry’s injury, according to the US Centers for Disease Control and Prevention. Yet despite this staggering pervasiveness (see chart), many Americans may be unfamiliar with the term “br…
Authored by DXS Contributor on January 28, 2013
Xplainer: How do you date a pregnancy?
…and 22. Pregnancy is often detected after the first missed period. This graphic is intentionally simple, removing all the hormones and other fun stuff (Ed: which you can find here). You’ll note that it says approximately day 14 and day 28. In textbooks, we often see that women have 28-day cycles and everything has a nice schedule. However, women are not textbooks and sometimes have shorter or longer cycles and/or have ovulation at slightly diffe…
Authored by Emily Willingham on October 3, 2012
No gene is an island: What do scientists mean when they talk about environment and genes?
Nope. This island does not represent your genes. (Source) When you read news stories about what affects a developing human in the womb or how cancer or obesity arises, you probably also see references to genes and environment. Some articles may focus on genes versus environment, or mention that something is “mostly” genetic or that the “environment” contributes to a disorder or trait in some way. What some people…
Authored by Emily Willingham on May 7, 2012
Is the bar high enough for screening breast ultrasounds for breast cancer?
…nt movement and legislation to inform women that they have dense breasts. Merits and pitfalls of device approval The approval of breast ultrasound hinges on a study of 200 women with dense breast evaluated retrospectively at 13 sites across the United States with mammography and ultrasound. The study showed a statistically significant increase in breast cancer detection when ultrasound was used with mammography. Approval of a device of this nat…
Authored by Emily Willingham on September 21, 2012