THREE common nutrition myths – busted!
- Post by: Dr Lauren Ball
- August 19, 2019
- Comments off
There is a constant influx of incorrect nutrition advice being thrown around the internet, so I thought it would be great to bust three of the top myths that pop up in my news feed.
MYTH #1: The MSG in Chinese food is toxic
MSG is short for monosodium glutamate. It is a common food additive used to enhance food flavour. It is derived from the amino acid ‘glutamate’ which is a neurotransmitter. There is a myth that eating Chinese food that contains MSG leads to excessive glutamate in the brain and excessive stimulation of nerve cells.
However, research has shown that dietary glutamate should have little to no effect on your brain, as it cannot cross the blood-brain barrier in large amounts.1Overall, there is no compelling evidence that MSG is dangerous when consumed in normal amounts.
MYTH #2: Tea/Juice detoxes remove harmful toxins from your body
You don’t need to go on a tea cleanse or a juice detox to remove toxins from your body. This is because our body is its own detoxification machine! It works day and night to help filter toxins and chemicals out of our blood.
– Your skin excretes waste products
– Your lungs remove toxins in the form of carbonic gas
– Your kidneys purify your blood
– You liver removes toxic substances
Toxic chemicals from things like cigarettes and excessive amounts of alcohol can’t be ‘detoxed’ out of your system. But generally speaking, you don’t need help removing everyday chemicals and toxins from your body. You are much better off heading to the shops and fueling up on fruit and veg for the week – cheaper and more effective!
MYTH #3:Egg yolks are high in cholesterol (you should only eat the egg white!)
Dietary cholesterol actually has remarkably little effect on blood cholesterol levels (in majority of people).2 Studies have shown that eggs
raise the “good” cholesterol and don’t raise risk of heart disease.3 Eggs are one of the most nutritious foods
you can eat! Plus, almost all the important nutrients are in the egg yolk. If you throw this away you are throwing away all the good stuff.
1.Hawkins, R. A. (2009). The blood-brain barrier and glutamate. American Journal of Clinical Nutrition, 90(3), 867S-874S. doi:10.3945/ajcn.2009.27462BB
2.Fernandez, M. L. (2012). Rethinking dietary cholesterol. Current Opinion in Clinical Nutrition and Metabolic Care, 15(2), 117-121. doi:10.1097/MCO.0b013e32834d2259
3. Fernandez, M. L. (2006). Dietary cholesterol provided by eggs and plasma lipoproteins in healthy populations.Current Opinion in Clinical Nutrition and Metabolic Care, 9(1), 8-12. doi:10.1097/01.mco.0000171152.51034.bf