Do a quick internet search for ‘food intolerance tests’ and you’ll be surprised how many companies are offering this service. They all have different prices; they all offer different benefits, but they all have one thing in common: to sell you a test to try to make you feel better. It makes you wonder how do you find that hidden gem? It’s like trying to find a needle in a haystack.
So what type of food intolerance tests are out there and what do they mean?
Tests that claim to provide information about which foods to avoid and which are suitable to eat can be grouped into these categories:
- Bioresonance food intolerance testing, including hair analysis and VEGA testing
- Pulse tests
- “Live” blood testing
- IgG blood tests
Are the answers in your hair and skin?
Bio-resonance is a fancy word for using electromagnetic frequencies to detect food intolerances. The reality is far from fancy, though.
Hair analysis – a lock of hair is sent to a laboratory and the energy fields in the hair are scanned to ‘determine’ food intolerances. The companies claim to fix everything under the sun and propose that the energy signals can pinpoint what is putting stress on your immune system.
Hair analysis is complete pseudoscience. Therefore, it’s safe to say this method is, quite simply, quackery!
VEGA tests – Also known as an electrodermal test, this claims to measure the body’s energy levels. The patient holds an electrode in one hand and the practitioner then uses a probe on the foot or other hand. If a trigger food is detected, there will be a dip in the electromagnetic conductivity.
This method is no better than chance, sorry to say!
Are the answers in your heart?
Pulse tests – You may have also heard of pulse tests as a method for detecting a food intolerance. The pulse is taken before eating a suspect food and measured 15 minutes after consumption. An increase in heartrate claims to indicate food intolerance. Again, this holds no basis in science and there is no correlation between heart rate and food intolerance.
Are the answers in your blood?
“Live” blood testing – This is where blood is mixed with the suspected food. It is then monitored to see if the white blood cells ‘change’ under the microscope. If they do change, this ‘indicates’ a problem food. This is an unproven method and holds no scientific basis.
IgG blood tests – This blood test looks at the IgG antibodies in blood. An increase in the levels of IgG can indicate an intolerance to a specific ingredient. There’s a large, and growing, body of scientific evidence that supports giving people choices about what they eat based on the results of a food specific IgG blood test.
The main tests you’ll find online are hair tests and IgG blood tests. Even then it’s a maze to work out which hair and IgG providers could give you the answers you’re hoping for, or whether some will leave you at a dead end. This buyers’ guide will give you all the answers.