
7 SIGNS YOU MIGHT BE VITAMIN C DEFICIENT
The crucial role that vitamin C – also known as ascorbic acid – has in a range of bodily functions should not be understated. This essential water-soluble vitamin helps to safeguard the health of y...

'NATURAL KILLER' CELLS: YOUR BODY'S STEALTH MODE
They’ve got a menacing enough name – but what are they, and what is their role in human health? Natural killer cells are also sometimes referred to as NK cells, killer cells, or just K cells. They’...

ASK A NUTRITIONIST: WHY CAN'T I GET ALL MY VITAMIN D FROM FOOD?
So why do I tend to advise patients to get out in the sunshine and supplement to optimise their vitamin D levels? Because we’re often low in it! The main reasons? We don’t go out in the sunshine en...

DOES COFFEE REALLY AFFECT VITAMIN ABSORPTION
It’s pretty understandable why so many of us feel the need to start the day – or indeed, finish it – with a satisfying cup of coffee. Amid the rushes, stresses and strains of daily life to...

THE IMMUNITY DIET: HOW TO EAT YOUR WAY TO BETTER IMMUNE HEALTH
Ask the Tonic Health Nutritionist Karen Newby: Can you eat your way to better immune health? There’s a lot of discussion about immune food at the moment. I whole heartedly disagree with the Britis...

A MATCH MADE IS HEAVEN 💤 DEEP SLEEP AND VITAMIN C
None of us want to find ourselves struggling to get to sleep, but of course, it can happen for all kinds of reasons, and often at times when we feel we can least afford it. Thankfully, however, as ...

TIME FOR A SUMMER HOLIDAY? DON'T FORGET THESE TRAVEL IMMUNE HEALTH HACKS FOR THE JOURNEY.
With the summer holiday season seemingly set to get underway after an enforced pause, how do we make sure we travel safely and healthily. Whether you are traveling via airports, trains, or cars, yo...

THE IMMUNE SYSTEM AND YOUR APPENDIX - WHY IT’S MORE VITAL THAN YOU THINK.
The appendix, the small, never thought of organ that most misconceive of as redundant. The appendix is a small, finger like projection which comes out of the large intestine on the right sight of t...

7 SIGNS YOU MIGHT NEED MORE VITAMIN D
Vitamin D’s billing as the “Sunshine Vitamin” tells you much about where you can expect to obtain it, as well as why so many health professionals are concerned that some of us may not currently be ...

THE TRUTH ABOUT VITAMIN C AND MILD STOMACH UPSET
Vitamin C is a water-soluble vitamin that isn’t stored very well in the body. The Reference Nutrient Intake for vitamin C is set in the UK at 40mg, which is the amount for 97.5% of the population t...

WHAT ARE POLYPHENOLS AND WHY ARE THEY IMPORTANT TO THE IMMUNE SYSTEM?
If you’ve been reading lately about some of the real plant extracts and powders in Tonic Health vitamin drinks, including ginger and blackcurrant, you may have noticed that these ingredients are ri...

7 IMMUNITY HEALTH HACKS EVERYONE SHOULD KNOW
Given the vital importance of the immune system, I’d like to share my own health hacks for immunity that can be easily incorporated into your daily life. These are the product of my own years of bi...

ASK A NUTRITIONIST: WHAT IS THE RECOMMENDED DAILY ALLOWANCE, AND WHY IS IT SO LOW?
First, a quick history lesson. The concept of standardised nutrient requirements was first established to help ward off starvation during the depression of 1862. Later, during World War 2, rationin...