Thursday, March 17, 2016

Infant feeding practices for allergy prevention

I can't remember the exact date, but around 2008, when I began specialising in paediatric nutrition, I also began talking about the big changes in advice we were giving parents. We began recommending parents introduce all allergenic foods within the first year of life, preferrably before nine months, and even better, while still breastfeeding. Before that, recommendations were all over the shop, ranging from first year to 3rd year introduction of certain foods, depending on the country and the professional body.

It's good to know that this advice is still relevant but the data behind it is even stronger. ASCIA (Australian Society of Clinical Immunology and Allergy) has just released new guidelines for the allergy prevention in infants. The last revision was in 2010.

To summarise some of the main points:
* Breastfeed for at least six months (the longer the better in my opinion - but certainly, breastfeeding whilst introducing first foods, may help prevent allergy)
* No regular cows milk, goats milk, soy milk, etc until the child is 12months old. Commercial infant formula to be used if not breastfeeding.
* There is no convincing evidence that HA or partially HA formulas prevent allergy in infants.
* Foods should NOT be introduced before 4months.
* There is good evidence that for infants with severe eczema and/or egg allergy, that regular peanut intake before 12 months of age can reduce the risk of developing peanut allergy.

So basically, introduce all potentially allergenic foods (egg, nuts, milk, soy, fish, shellfish) as early as possible once your baby has commenced solids, in texturally appropriate form of course. Continue to breastfeed as long as possible.

An additional good point to note from the ASCIA guidelines: Understand that the facial skin in babies is very sensitive and that many foods (including citrus, tomatoes, berries, other fruit and vegemite) can irritate the skin and cause redness on contact – this is not food allergy. Smearing food on the skin will not help to identify possible food allergies.

To see the full document, visit the ASCIA website.

Alkalising diet

Here's a fact. The pH of your blood is 7.4, which IS slightly alkaline. If it drops below 7 or rises above 7.7, you will DIE. That's right, so why on earth would you want to mess with that equilibrium in the first place, even if you could.

The body is actually quite amazing. It manages to maintain the blood pH at 7.4 through a series of mechanisms as it circulates through the body.

What you eat will not affect the pH of your blood. Firstly, the stomach pumps out a strong acid to digest food. Stomach acid has a pH of 3. If food wasn't acidic before it enters the stomach, it sure will be after. And even if you gulped a whole bunch of antacids, your amazing body and stomach will soon regulate the acid to return it to it's perfect food-digesting pH of 3. It's a pointless battle.

Then the food is pushed into the small intestine, whereby the acid is neutralised and further digestion and absorption occurs. Whatever you ate is now all a certain pH, which is of course, the same as everything else within the small intestine.

And as to the prevention of cancers and the idea that cancers will not growing in an alkaline body. There are cancers (leukemia and lymphoma to name a few) that thrive within the alkaline environment of our blood, which, if you remember, must remain slightly alkaline (or you will DIE).  

Monday, March 14, 2016


Let's start with the most basic of questions. What exactly is gluten? 
Gluten is a mix of proteins in wheat and related grains including spelt, barley and rye. Wheat gluten consists of two major componts, gliadin and glutenin. Glutenin is responsible for the elasticity and strength of dough. Essentially, it's a naturally occurring, and normal protein in many of the foods we eat.

Given the fact that it is "all natural" in this first world climate of cleansing and clean eating, it's mind boggling how a naturally occurring plant protein is being avoided to the extend that gluten has been and continues to be. 

Obviously those with CD need to avoid gluten, all gluten, and all the time, because it elicits an immune response in them which destroys their gut lining, leading to other long term complications. But this does not make gluten a bad substance for the majority of the population.

The prevalence of Celiac disease (CD) in the USA was 0.71% according to a 2012 study. (1)

There is some evidence to suggest certain non-celiacs do suffer a type of non-celiac gluten sensitivity. This is an area that needs a lot more study. Non-celiac gluten sensitivity has been reported at 6% of the population.

A 2016 study provided some evidence towards this. Of 140 subjects enrolled in the study, 101 experienced improvement on a GF diet and of those subjects, 14% were found to have a NCGS. Limitations of the trial include the low subject numbers and self-reporting. (2)

Many people who avoid gluten do so without any real professional advice, and in a lot of cases, any real understanding of why they are doing so. It may be that they legitimately do suffer side effects from the food they eat, but health professionals are best at isolating the true cause of the gastrointestinal disturbances.

What could be worth investigating further in many of these NCGS individuals is FODMAPs as a cause of their symptoms and discomfort. This does not rule out wheat as a cause (which would still support the use of a GF diet (for simplicity sake). But it could actually identify other or alternative factors too. 

FODMAPs is the accronym for Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols and I will discuss these as a future topic.

1. Am J Gastroenterol. 2012 Oct;107(10):1538-44; quiz 1537, 1545. doi: 10.1038/ajg.2012.219. Epub 2012 Jul 31.
The prevalence of celiac disease in the United States.
Rubio-Tapia A1, Ludvigsson JF, Brantner TL, Murray JA, Everhart JE.

2. PMID:
[PubMed - in process] 

Saturday, January 23, 2016

The resurection...

It's been a long time since I've written a post for this blog and I'm not sure I will continue along the path of family recipes as I was doing so in the past. 

It will still be a blog about nutrition, and it's quite possible that family nutrition will be a frequent topic. However, this blog is now more of a personal nutrition journal for me to document my unpaid dietetic work and keep up to date with current nutrition topics. 

I can't promise there will be many pictures. There will be lots of facts though. For pictures, pop across to my much more interesting blog at .