Dispelling nutrition myths, ranting, and occasionally, raving


1 Comment

Aloe vera: healing or harmful?

8463896997_566a475485_z

Image by Andreas Issleib on flickr. Used under a Creative Commons Licence.

A little while ago when I was looking for blogspiration a friend told me to take a look at a certain “nutritionist” on twitter. Since then, I’ve had her on my back burner because she certainly looked like she would have some good blog fodder (cured her incurable illness through diet) but I couldn’t be bothered to look through all her posts. Well, today’s the day I move her to the front burner.

I was reading her post on the healing properties of aloe. I found myself hoping that she would provide a balanced picture because I didn’t really want to write about aloe. Sadly, she did not, so here we are. As I feel that simply extolling the virtues of a food, without providing cautions is irresponsible, even if you don’t have a regulatory body protecting the public from you. Sorry, sorry, I digress.

In her post she writes about the magical properties of aloe: anti-viral, anti-bacterial, anti-inflammatory. Unfortunately, there she didn’t link to any research so I can’t comment on the quality of the studies used to make these claims. As far as I can tell, to date there’s been very little (if any) research on human subjects. However, some in vitro studies and animal have shown some promise when it comes to the anti-viral (1, 2) and anti-microbial (3, 4) properties of aloe vera. Of course, based on the current research, there’s no way to know what dose or form of aloe would (if at all) be effective in humans. It’s entirely possible that oral ingestion of aloe would not have any positive benefits in relation to viruses and bacteria.

Some mouse studies and in vitro have shown promising wound healing and anti-inflammatory effects of aloe vera (when administered both topically and orally) (5, 6). Again, there has yet to be any conclusive research done in humans.

Okay, it sounds a bit promising but… Then come the concerns. Before you start adding a handful of aloe vera plant to your smoothie you should be aware that the exterior portion of the leaf has a laxative effect. There are other longer lasting concerns about aloe vera consumption than diarrhea. My friend Helen has written about many of them on her blog Food and Nonsense. These include a risk of cancer and impaired liver function. Over at Examine, the only conclusive research they’ve found so far for aloe supplementation is for increased intestinal motility (i.e. to combat constipation). The Mayo Clinic provides a long list of cautions against the ingestion of aloe vera products, including the risk of inducing uterine contractions in pregnant women. I’ve also blogged about the consumption of aloe vera juice in the past.

I believe that my final statement in that post stands the test of time: Just because it’s “natural” doesn’t mean it’s good for you.

 


2 Comments

Book Review: Health at Every Size

url

Thanks to Helen at Food & Nonsense starting the RD book club I finally got around to reading Linda Bacon’s Health at Every Size. Unfortunately, due to time differences, the tweet-up to discuss the book is taking place at 6 am on a Sunday morning for me. I’ve scheduled this post to go live at that time as my feeble attempt at participating in the discussion without waking up ;) If you’d like to check out the discussion just search for the #RDBookclub hashtag (was that redundant? Probably) on twitter.

Helen was also kind enough to post some discussion questions so here goes…

1. Do you agree with the HAES assertion that health not weight should be the focus of nutrition interventions?

Absolutely. The focus should be on health and well being, never on numbers on a scale. That being said, weight management is one of the main reasons that people seek out advice from dietitians. I don’t think that we can just ignore this fact. As health care professionals it’s our job to help people to understand that the numbers on a scale don’t necessarily matter all that much when it comes to health. That being said, weight is often inextricably intertwined with health and nutrition.

2. Is a health approach practical in todays aesthetic focused society?

This is an excellent question and one that I found myself thinking about quite a bit as I was reading the book. It’s all well and good that we know that people can be healthy at many different weights but how do you translate that into acceptance and understanding? As much as we tell someone that they are healthy at their current weight, if they’re unhappy with that weight should we help them to lose weight or help them to accept themselves as they are? Oftentimes, neither of these options is feasible.

3. Do you feel that the main concepts in the book were adequately backed up by the research presented?

For the mist part I did. Although I must confess that I didn’t take the time to seek out all of the research Bacon used to back-up her arguments. A couple of things did bother me: One, I didn’t like how much she mentioned that if you do this or that you’ll probably end-up losing weight. If your book is about being healthy no matter what your size, and you’re preaching fat acceptance, then I don’t think that weight loss should be a frequently touted benefit of your approach. Two, I’m not sure how credible her evidence to support that overweight and obese people generally live longer than their lower-weight counterparts is. Weight loss is an extremely common side effect of many serious diseases. Thus, thinner people may be more prone to dying than larger people as a result of an underlying illness causing weight loss, not as a result of being thin. If we’re talking health at every size we need to be careful not to tip the scale in the other direction. People who are overweight, obese, average, or underweight may all be healthy. Also, death is not the only thing to look at. Obese and overweight people may be living for longer but how many of them are healthy during these extended life spans? Health span may be a more important consideration than life span.

4. How should nutrition professionals use this information in their day to day practice?

I think that nutrition professionals should use this information to help themselves overcome their personal biases and to educate their clients that weight is not the be all and end all when it comes to health. We should also use it to help clients realise that our own weight is not an indication of our health nor of our ability to do our jobs well. I can’t tell you how many people I’ve had tell me that I’m a dietitian they might actually listen to because I’m slim, as though larger dietitians don’t have exactly the same knowledge and education as I do. As with any field, our weight is not an indication of our ability to perform our jobs well.

5. Were there any ideas in this book that you reject or find difficult to accept?  Why?

I think I covered this in question three. Oops! I was also bothered with a very small point in which Bacon was advising people on how to choose whole grains (p.79). She says, “Look for the word “whole” in the ingredients list.” Not entirely accurate. This is the point where I pondered whether or not it was okay to write in a library book. You need to see the words “whole grain”. Unfortunately, “whole” on its own is not sufficient. Anyway… This is a very small quibble in the scheme of things.

I did also find it difficult to accept that there is no relationship between obesity and disease states. While I absolutely believe it’s possible to be healthy (and conversely unhealthy) at any weight I do still believe that there is increased risk of developing certain conditions such as heart disease, some cancers, type 2 diabetes when you’re obese.

6. What is the main thing you took from this book? How has it been helpful to you?

The main thing I took from this book is the importance of self-worth and acceptance. We all need to stop aspiring to look like other people and learn to be happy being ourselves. Many of us also need to step away from the scale and stop letting the numbers on it define us. I also really enjoyed the chapters on food and fat politics.

For some more interesting perspectives on the HAES movement check out the following links:

http://www.weightymatters.ca/2013/12/guest-post-why-i-am-walking-away-from.html

http://www.weightymatters.ca/2012/03/why-haes-may-never-go-mainstream.html

http://www.drsharma.ca/obesity-the-science-behind-health-at-every-size-haes.html

http://www.sciencebasedmedicine.org/does-weight-matter/