Martyn's new book

[Sleepybunny]

Hi,

I missed this recent post on Martyn Hooper's blog.

It's about his new book which includes recipes that contain B12.

He acknowledges that the recipes won't help people with PA get enough B12 but I guess the book might help people with dietary B12 deficiency.

martynhooper.com/2020/11/25...

Martyn Hooper is the chair of PAS (Pernicious Anaemia Society).

PAS (Pernicious Anaemia Society)

Based in Wales, UK.

pernicious-anaemia-society....

There is a helpline number that PAS members can ring.

[Hidden]

Thanks Sleepybunny I just bought a copy on kindle I’ll look forward to a good read at that x

[fbirder]

What a shame he still thinks that seaweeds like nori contain useful B12. Recent studies have shown that they contain B12 analogues that can inhibit the absorption of real B12 by competing with the IF transport mechanism.

Looking at the effect of nori on MMA levels. If active B12 were present MMA levels should decrease. Raw nori had no effect. Dried nori actually caused MMA levels to increase.

veganhealth.org/vitamin-b12...

[Slothlike in reply to fbirder]

I haven’t read the book and don’t know whether this is a big issue for the type of recipes suggested, but following on from this it’s also worth mentioning that recipe development for things like b12 has a few pitfalls.

In the food industry if you develop recipes you can initially use M&W references to calculate the theoretical nutritional at the start of recipe development but things like vitamins and minerals have to be validated by nutritional analysis of the final recipe as consumed (e.g. after preparation/cooking).

This is because of things like dilution, degradation due to heat, light, oxidation etc. which can mean that the theoretical content can be very different to what you end up with. Worth also noting that b12 is sensitive to oxidation I believe so mixing with other ingredients could reduce it. Hopefully this has been considered and there is a disclaimer in the book.

It’s also common practice to revalidate the vitamins and minerals every year to ensure that variation of ingredients is considered. This is because things like animal feed stocks, and farming practices can affect end results away from the mean values in M&W.

May or may not be an issue ..depends on the suggested recipes. I doubt that they have been validated by nutritional analysis though (very pricey to do this for every recipe in triplicate)