Excellent article from the Dietitians of Canada: 5 food myths busted!
My fav is the gluten-free fad that’s going around. People think that eating gluten-free is healthier, when really, it’s not. Only people with celiac disease or are gluten intolerant/sensitive benefit from eating gluten-free (since they physically can’t tolerate gluten… lots of unwanted activity on the other end, if you know what I mean…).
Everyone else just thinks they benefit because often, when you cut out gluten, you’re cutting out many refined foods such as pastries, bread and pasta (high calorie, refined stuff) that many people eat too much of, leading to weight gain, etc. What they lose when cutting out gluten are beneficial vitamins and minerals found in grain products that are not as easily available through the other food groups. So really, save yourself the trouble of finding (and paying exorbitant amounts for) gluten-free food, and just stick to whole grains and high fibre foods. And don’t forget exercise! It’s all one package ;)