Nutrition Myths That Won't Seem to Go Away

The idea that carbs are inherently fattening took hold during the low-carb diet boom of the 1990s and 2000s and has never fully faded. In reality, carbohydrates encompass a wide range of foods — from white bread to lentils to oats — and lumping them together misses crucial differences in fiber content, glycemic impact, and nutritional value. Research published by major nutrition bodies consistently shows that whole-food carbohydrate sources support gut health, sustained energy, and satiety. What drives weight change is overall calorie balance and dietary pattern, not any single macronutrient. Our article on dietary fibre explains why carb-rich whole foods are often among the most beneficial you can eat.

The word 'detox' is applied loosely to teas, juice programs, and multi-day fasts, but the scientific basis for these products is weak. Your liver, kidneys, lungs, and skin already perform continuous detoxification as part of their normal function. While short-term cleanses may lead to temporary weight loss — primarily water and glycogen — there is no credible clinical evidence that they remove named 'toxins' or improve organ function beyond what a balanced diet supports. Some aggressive cleanses can deprive the body of essential protein and micronutrients. If you want to genuinely support your body's natural processes, consistent whole-food eating, adequate hydration, and regular physical activity are the approaches with the strongest evidence base.

The fat-phobia of the late 20th century drove decades of low-fat food products, many of which replaced fat with added sugars. Decades of subsequent research have clarified that unsaturated fats — found in foods like avocados, nuts, seeds, and olive oil — are associated with cardiovascular benefits, not harm. Saturated and trans fats warrant more attention, particularly trans fats from partially hydrogenated oils, which have largely been removed from the US food supply due to regulation. Eating fat at appropriate levels does not automatically lead to weight gain; total caloric intake and food quality remain the dominant factors. Eliminating fat entirely can impair absorption of fat-soluble vitamins A, D, E, and K.

Breakfast's status as the 'most important meal of the day' has been questioned — and so has the idea that skipping it reliably aids weight loss. Research results are genuinely mixed. Some studies suggest skipping breakfast increases hunger later in the day, leading to higher-calorie choices; others show no significant difference in weight outcomes between breakfast eaters and skippers when total calories are controlled. Individual variation matters: some people function well without an early meal, while others find it essential for concentration and appetite regulation. Rather than following a rule about meal timing, paying attention to your own hunger cues and the quality of what you eat across the day is more likely to serve you well.

Protein marketing has dramatically raised concern about deficiency, but national dietary surveys consistently show that most American adults — including those who don't eat meat — meet or exceed recommended protein intakes. Protein requirements do increase with age, particularly in older adults, and with high levels of physical activity. However, for the general population, a varied diet that includes legumes, dairy or dairy alternatives, eggs, fish, poultry, meat, or plant proteins like tofu and tempeh typically provides sufficient amounts. Whole food sources of protein also deliver fiber, vitamins, and minerals that isolated protein supplements do not. If you have specific concerns about protein intake, a registered dietitian can provide personalised guidance.