27/05/2021
Too much of something can be just as harmful as too little, & often extra is simply a waste.
We often see in research that low intakes or deficiency of a nutrient are linked with different poor health outcomes. But, like with the last “Food for Thought” post, these findings can often get exaggerated & misinterpreted to mean that if too little is bad then more must be better🤨
We often see this with micronutrients & protein, and in some cases now with fibre. If low iron intakes lead to anaemia, and anaemia rates are high, then surely we should all take an iron supplement? If b-vitamins are needed for energy release, and I have low energy, then surely extra b-vitamins will help? If protein supports muscle growth, then eating lots of protein and taking a protein supplement will make me leaner and more muscular, right? 🧐
The majority of research used for the basis of these claims shows that people who are deficient in X nutrient have higher rates of Y health condition. For those people, taking more of X nutrient will reduce the risk or impact of Y health condition👍🏽
But for people with adequate amounts of X nutrient, there will be no added benefit of having more. Your body usually gets rid of it through your p*e. In fact, sometimes too much can cause harm, also known as excess or toxicity👎🏽
Research & public health guidance are based on what is most important for most people. The only time blanket nutrient recommendations are made is when the vast majority of people have low levels of a nutrient, high rates of the related health condition, and when there is very little risk of excess or toxicity. Currently, blanket recommendations stand for vitamin D for everyone☀️, folic acid for women💊, & more fibre-rich foods for everyone, up to 30g per day🥔. Everything else should be based on your own individual needs and circumstances. With fibre, the broad term “more” is used, but for people who already eat plenty of fibre, they don’t need to go much over 30g, as that itself may cause digestive discomfort.
More isn’t always better.