Saturday, February 25, 2012

Women in Science: Rita Levi-Montalcini

Women in science do not get the recognition they deserve - they are often overlooked, forgotten or brushed to the side to do menial repetitive work. One of the best examples is Rosalind Franklin: without her, Watson & Crick would never have elucidated the structure of DNA. But did she share the Nobel Prize with them? No (sure, she had passed away before the Prize was awarded, but she still doesn't get the credit she deserves).

In honour of all these amazing women, I'm starting a "Women in Science" series, wherein I will explain some of the invaluable work these female scientists have accomplished.

Today we're going to start with Rita Levi-Montalcini, a remarkable woman I first learned about in my undergrad program (Biology & Pharmacology Co-op at McMaster University).
  • Rita Levi-Montalcini won the 1986 Nobel Prize in Physiology or Medicine for her discovery of nerve growth factor (NGF). Her experiments looked at the growth of chick embryos & found that a transplanted tumour caused an excessive outgrowth of nerves. She thought the tumour cells must be producing a compound (NGF) that was exclusively inducing the growth of neurons. At the time (1952), it was a fairly radical idea & no one believed her - but she went on to prove her theory. Further research also showed that cells can produce NGF when looking for a new nerve connection.
  • Rita shared the Nobel Prize with her colleague Stanley Cohen. He found that NGF was abundant in snake venom & mammalian saliva & was able to isolate the protein to determine its structure. At the same time, he discovered epidermal growth factor, a compound that promotes the growth of a number of different cell types.
  • Rita is a twin. She & her twin sister Paola were born in 1909 - which makes her 101, the oldest living Nobel laureate. She's also the first Nobel Prize winner to reach her 100th birthday.
  • As with many female scientists, Rita was discouraged along the way. Her father ran a strict household & thought that a professional career would interfere with a woman's role as a wife & mother. Eventually, triumphantly, she was able to overcome his objections & enrolled in medical school.
  • As a Jewish family in Italy during WWII, Rita's medical career was over almost as soon as it began. She set up a lab in her own bedroom though - more than once since she had to relocate - and conducted her own experiments! She even hired an old teacher of hers as an assistant for a time. At the end of the war, another one of her professors asked her to join him in America. She planned on staying a few months, but the experiments went so well she stayed for 30 years!
  • Rita is a Senator for Life in Italy, where she gets a lot of bad press from people who disagree with her political opinions. She's fierce though & won't back down, despite her age & gradual loss of hearing & sight.
I think Rita Levi-Montalcini is someone from whom everyone can learn a little something. Her persistence & integrity are certainly laudable; she's definitely someone to look up to.

Friday, February 24, 2012

Nutritionist vs Dietitian

To get this blog rolling, I thought I'd start with a topic I'm passionate about: nutrition. Specifically, I'm going to talk about a caveat to watch for before making any changes to your diet.

Lately, "holistic healing" has been in the news a lot, with many different ideas on what a healthy lifestyle entails (juicing! alkaline water! raw vegan!). Notably, many of these are put forth & supported by impressive sounding certified professional nutritionists - so they must know what they're talking about, right?

Actually, maybe not. Here's what you should know:

Nutritionist vs. Dietitian

or

Certified Nutritional Practioner (CNP) vs. Registered Dietitian (RD)

Let's say you're trying to lose weight, or need to change your diet for a specific reason (allergies, intolerances, high blood pressure, migraines, etc), and want professional advice. Who do you turn to? A nutritionist or a dietitian?

I think the best way to compare the two is by looking at the schooling & experience you need in order to obtain these qualifications:

To become a Registered Dietitian (RD), you must:
  1. Earn your bachelor's degree from a University that is accredited by the Dietitians of Canada (DC) or the American Dietetic Association (ADA)
  2. Apply for a post-degree internship or Masters practicum, completing a minimum number of hours (1200 in the US) under the supervision of a RD
  3. Write & pass an examination offered by the DC or ADA
Only then can you call yourself a dietitian. However, similar to other health practitioner (like doctors, nurses, dentists, etc), you cannot practice unless you register with the ADA or the provincial regulatory body for the Canadian province in which you want to practice. This registration must then be renewed yearly in order to continue your practice.

All in all, pretty rigorous, as any health profession should be.

So what about becoming a nutritionist?

Nutritionists are NOT regulated by any agency. Anyone can take a nutrition program at some obscure college & declare themselves "certified" - indeed, "institutes" or "councils" are often affiliated with the program or school directly in order to confer certificates on their students upon graduation. Naturally, these programs are organized & taught by certified nutritionists, resulting in a curriculum that may not necessarily meet the proper standards.

This means that despite all those letters after a nutritionists name (CNP, RNCP, ANP), they may not be as qualified as they seem. Certainly they are not as well trained as a RD. Before you spend any money on an assessment, ensure that the professional you're seeing is indeed a registered professional. Always be skeptical of professionals propounding the next miracle-cure-vitamin-antioxidant-you-really-need-to-know-about-but-your-doctor-isn't-telling-you!!! If it sounds too good to be true, it probably isn't true. In fact, take all "preventatives" with a grain of salt; remember the placebo effect: a tablespoon of sugar water is a great cure for many ailments.

(NB: I'm not saying all nutritionists are quacks - I'm sure there are some good ones out there. Just do your research before spending your money!)

Welcome!

Welcome to my new blog, Science Byte!

I met with a friend & colleague for coffee yesterday & she gave me a great idea: start a blog devoted to science. I've recently graduated with my MSc & am currently in the middle of a job search, hoping primarily for a medical writing position. A blog is a perfect venue to showcase & exercise my scientific writing skills.

I haven't settled on specific topics to cover here yet, but I'm aiming for a wide range that will cover my varying interests. I'm sure pharmacology, ethics and healthcare will surface frequently. I'll also start transferring some of my "Science Byte" posts over from my Ulixis Crafts blog in order to have some content here.

If you have any suggestions for future posts, please leave me a comment!