A good example is the rise of "carbs are bad" which may have now been replaced by "fats are bad" advice.
Ironic, because "carbs are bad" replaced the "fats are bad" that was parroted for much of the 70s, 80s, and 90s.
Part of the problem with accepting nutritional advice from anybody is the fact that the experts in the field seem to do a complete 180 every ten or so years, telling you that everything that you did for the last ten years based on their advice has been wrong and you need to do something else instead.
Like all the people who loaded up on margarine because "animal fats are bad". Now they found out that the trans-fats that margarine is laden with are worse for you than animal fats.
Then there were all the people who loaded up on pasta and rice in the 80s and 90s because "fats are bad but carbs are okay".
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Ironic, because "carbs are bad" replaced the "fats are bad" that was parroted for much of the 70s, 80s, and 90s.
Part of the problem with accepting nutritional advice from anybody is the fact that the experts in the field seem to do a complete 180 every ten or so years, telling you that everything that you did for the last ten years based on their advice has been wrong and you need to do something else instead.
Like all the people who loaded up on margarine because "animal fats are bad". Now they found out that the trans-fats that margarine is laden with are worse for you than animal fats.
Then there were all the people who loaded up on pasta and rice in the 80s and 90s because "fats are bad but carbs are okay".