Double X Science - It's In Your Genes

Search Results for: label/gestational age

  • Xplainer: How do you date a pregnancy?

    …lopment = embryological age (e.g., developmental biologist) 2 But why are there two types of dates? We might need a bit of a primer on the menstrual cycle and how it relates to pregnancy. Implantation happens between days 20 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…

    Authored by on October 3, 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 on April 5, 2013

  • Colon Cancer Awareness Month: Get your ass screened. We mean it.

    Don’t want this growing in your colon?Get screened. Via Wikimedia Commons. It started a few months after I had my second son. A pain. Sharp, unrelenting, abdominal. Occasional blood from a place where blood isn’t supposed to appear: the rectum. There. Got the R-word out of the way. After I had laparoscopy for presumed endometrial scarring as the cause of the pain, the pain nevertheless persisted. So, I was referred to a gast…

    Authored by on March 7, 2012

  • Miscarriage: When a beginning is not a beginning

    …ntaneous abortion. Except that some didn’t like the term spontaneous abortion and used intrauterine mortality (Wood, 1994). Or fetal loss. Fetal loss is probably the most common. There is also pregnancy loss (Holman and Wood, 2001). You can use that term, too. Oh, or a-conceptions (a for abortion), compared to l-conceptions (l for live birth) (Wood, 1994). A large number of these fetal losses are before or close to the time of implantation. For m…

    Authored by on September 5, 2012

  • Early puberty among adoptees

    …es is much smaller? A 3-year-old is unlikely to pass for a 1-year-old or vice versa, but many a 6-year-old could pass for a 4-year-old. A child who cannot yet walk on his own would almost never be estimated to be any age over 2, but a 10-year-old might pass for as young as 6 if undernourished and immature. It’s worth noting that this issue affects a shrinking number of children in the U.S., if only because international adoption rates have…

    Authored by on May 28, 2013

  • As Seen on TV! Age Your Wine in 10 Seconds!!!!

    …ould be aged! All wines actually go bad over time, including many of the usual types you may see in the store. That time may be pretty long, but you don’t want to just buy any bottle, stick it in your basement, and wait 20 years to drink it – most of them won’t taste good. According to my source, the days are gone where you might buy bottles of wine and put them in a cellar for your children. (Who has a wine cellar now anyway? I live…

    Authored by on May 14, 2012

  • Breast cancer screening and treatment, especially in younger women

    …ncer http://www.sccablog.org/2012/10/tweeting-for-breast-cancer-awareness-month/ Twitter handles @SeattleCCA, @UWMedicineNews, and @HutchinsonCtr; also @jrgralow and @SeattleMamaDoc Storified by Emily Willingham · Mon, Oct 15 2012 13:00:07 “@stales: MT @SeattleMamaDoc: Exercise lowers hormone levels, consequently lowers risk of breast cancer.#SCCAbc #SCCAbc”MESFER AL SHAHRANI #SCCAbc Topic 3: If your mother or sister had breast cancer, especially…

    Authored by on October 17, 2012

  • About that 1 in 50 autism number

    Not all numbers are created equal. by Emily Willingham         The US Centers for Disease Control and Prevention (CDC) has released new figures for autism prevalence in the United States. They now give a prevalence of 1 in 50, but this story, like most autism-related stories, goes deeper than the numbers. First, this prevalence estimate doesn’t focus only on 8-year-olds, the population used for deriving the 1 in 88 number reported in 2012….

    Authored by on April 29, 2013

  • Biology Explainer: The big 4 building blocks of life–carbohydrates, fats, proteins, and nucleic acids

    …molecules themselves break down into a surprisingly small number of building blocks. The proteins that make up all of the living things on this planet and ensure their appropriate structure and smooth function consist of only 20 different kinds of building blocks. Nucleic acids, specifically DNA, are even more basic: only four different kinds of molecules provide the materials to build the countless different genetic codes that translate into all…

    Authored by on June 8, 2012

  • 100 Years

    venting aging.  If we look at the cellular level, scientists discovered that complete copying of DNA is dictated by telomeres and the enzyme telomerase, which earned 3 scientists the Nobel Prize in Physiology and Medicine in 2009. The unique DNA sequence in the telomeres protects chromosomes from degradation. When telomeres are shortened, cells age. Eventually, the telomeres will shorten, and cells will age and die. Unfortunately, extending telo…

    Authored by on October 19, 2012

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