I'm Darryl Edwards, a personal trainer and clinical nutritionist based in London, England.  This blog documents my experiences with a primal lifestyle that has made me fitter and healthier in my forties than ever before.  

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Reading List
  • The Paleo Solution
    The Paleo Solution
    by Robb Wolf

    Paleo for weight loss, performance and disease prevention. Read my full review here.

  • Why Zebras Don't Get Ulcers
    Why Zebras Don't Get Ulcers
    by Robert M. Sapolsky

    The impact of too much stress in our lives - impotence, obesity, heart disease and much more...

  • The Primal Blueprint: Reprogram Your Genes for Effortless Weight Loss, Vibrant Health, and Boundless Energy
    The Primal Blueprint: Reprogram Your Genes for Effortless Weight Loss, Vibrant Health, and Boundless Energy
    by Mark Sisson

    Usually we have to go back to basics to progress, this is a great place to start!

  • Slow Death by Rubber Duck: The Secret Danger of Everyday Things
    Slow Death by Rubber Duck: The Secret Danger of Everyday Things
    by Rick Smith, Bruce Lourie, Sarah Dopp

    "Think about the toxic chemicals you put onto your body, and are exposed to on a daily basis.  Frankly, quite worrying..."

  • Protein Power
    Protein Power
    by Michael R. Eades, Mary Dan Eades, Mary Deans

    First published in the mid 1990s.  Amongst other things, disputes the 'fat intake causes obesity' argument and reasons why the high carb/low-fat diet doesn't work.

  • Born to Run: The Hidden Tribe, the Ultra-Runners, and the Greatest Race the World Has Never Seen
    Born to Run: The Hidden Tribe, the Ultra-Runners, and the Greatest Race the World Has Never Seen
    by Christopher McDougall

    An inspirational read, whether you are a 'runner' or not.  This book also investigates why expensive 'cushioned' running shoes increases the likelihood of injury.

  • In Defence of Food: The Myth of Nutrition and the Pleasures of Eating: An Eater's Manifesto
    In Defence of Food: The Myth of Nutrition and the Pleasures of Eating: An Eater's Manifesto
    by Michael Pollan

    An insight into real, simple and nutritious food.  Insightful.

  • Food Rules: An Eater's Manual
    Food Rules: An Eater's Manual
    by Michael Pollan

    An excellent, non-scientific common sense quick reference to the often confusing question : "What should I eat?"

  • The Paleo Diet for Athletes
    The Paleo Diet for Athletes
    by L. Cordain

    An alternative to Cordain's first book "The Paleo Diet" if who want to consider the impact of Paleo on athletic performance.  It is geared towards endurance athletes but an interesting read nonetheless.

  • Vegetarian Myth, The
    Vegetarian Myth, The
    by Lierre Keith

    I'm an omnivore.  I believe it is healthy to eat naturally-reared meat, non-farmed fish as well as a wide variety of fresh vegetables.  This book is an interesting read and has a lot to say about why becoming a vegetarian isn't necessarily the best option for humans.  However read this, do your own research and make up your own mind.

  • The Second Brain
    The Second Brain
    by Michael D. Gershon

    A discussion about the complex nervous system working in the gut, which produces neurotransmitters such as serotonin.  In fact much more serotonin is produced in the gut than the brain!

  • The Rise and Fall of Modern Medicine
    The Rise and Fall of Modern Medicine
    by James Le Fanu
  • Swindled: From Poison Sweets to Counterfeit Coffee - The Dark History of the Food Cheats
    Swindled: From Poison Sweets to Counterfeit Coffee - The Dark History of the Food Cheats
    by Bee Wilson
  • Cancer: The Evolutionary Legacy
    Cancer: The Evolutionary Legacy
    by M.F. Greaves
  • The Paleo Diet: Lose Weight and Get Healthy by Eating the Foods You Were Designed to Eat
    The Paleo Diet: Lose Weight and Get Healthy by Eating the Foods You Were Designed to Eat
    by Loren Cordain

    This provides extraordinary insight into the reasons behind adopting a paleolithic diet.  Some aspects are controversial and many may feel it is too dogmatic.  I have often gone back to this book and re-read it for clarification as Dr Loren Cordain is often mis-quoted.  There is now a revised edition (2010 edition) to counter some of its earlier criticisms, this is an excellent resource and a must-read for any one serious about paleo nutrition.

  • Lore of Running
    Lore of Running
    by Tim Noakes

    This book offers a comprehensive insight into the science, coaching and discipline of running.  Energy systems, coaching and training.  Often quoted as the bible of running.

Monday
Nov012010

Nutrition for Health: Sorrel Tea lowers blood pressure

Nutrition for Health: Sorrel Tea lowers blood pressure

  

I am currently in Egypt travelling in the Nubian region.  Without doubt some very interesting sights and wonderful people in this Southern region of Egypt called Aswan.

Today I was introduced to a very popular drink served here known locally as Hisbiscus tea. It is deep red in colour and is based on a dried flower - served either hot or cold.  The locals mention that this is 'good for the blood' as it allegedly lowers blood pressure.  When speaking to a local botanist about this he pointed out that this drink was in fact Sorrel, not hibiscus.  They are just similar looking flowers.  Sorrel as a drink is popular not only in Egypt (as evidenced by all the market stalls stocking it), but also in Sudan, Senegal and other parts of Africa.  It is also a drink popular in Jamaica and the Caribbean. 

Sorrel was a drink I often had as a youngster.  In a Jamaican household the explanation given was 'It's good for you!'  Like many of the foods I was given as a child, (before 'superfoods' became a buzz-word) these were seen as normal and healthy foods - nothing special.  But I suspect viewed as an antidote to some of the nutrient light food that we would often choose to consume given half the chance.

Back to the present - I enjoyed a few cups of Sorrel tea with my Nubian 'cousins' in a small village in Aswan.  Probably been a good 20 years or so since I last drank Sorrel.  It looks like a blackcurrant tea, slightly thicker and quite pleasant to taste.  But more importantly is there any significance to the potential health benefits?

Well there is some research on this:

"Sorrel contains a wide range of vitamins and minerals including vitamin C, calcium, niacin, riboflavin and a group of compounds called FLAVONOIDS which not only give its deep red colour but are now being recognized as a powerful antioxidant which scavenges the body of free radicals that can cause deadly diseases if they are not removed from the body."[1]

Antioxidants can protect against free-radical induced diseases such as cancer, neurodegenerative disorders (e.g. Parkinson's) and premature ageing - so a wide range of these are important in a balanced diet.

There are also numerous studies on Sorrel's LDL (bad) cholesterol and triglyceride lowering properties, which offer protection against heart disease.[2]

I will be taking some Sorrel back to the UK,and look forward to drinking it more often.

Sources:

SORREL AS A NUTRACEUTICAL - HEALTH BENEFITS, The Scientific Research Council (Jamaica)[1]
Mexican Scientific Institute of Social Security[2]

 

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