Nutrition Myths That Refuse to Die

This myth surged during the low-carb diet wave and has never fully retreated. In reality, carbohydrates are the body's preferred energy source. When people gain weight on high-carb diets, the culprit is typically total calorie intake — not carbs as a category. Whole food carbohydrates like legumes, oats, and vegetables also carry fiber and micronutrients that support overall health. The quality and quantity of what you eat matters far more than the macronutrient label on it.

The word 'detox' is used freely in marketing but has little clinical meaning when applied to commercial cleanses. The human body has a sophisticated, built-in filtration system. The liver metabolizes compounds and the kidneys excrete them. No credible clinical evidence supports the idea that short-term juice fasts or herbal regimens meaningfully improve that process in healthy people. Some cleanses are simply low-calorie diets that produce short-term weight loss from reduced food intake and water loss — not toxin removal.

The fat-is-bad era of the 1980s and 90s left a lasting impression, but it was based on incomplete science. Fat is calorie-dense (about 9 calories per gram versus 4 for carbs and protein), so portions matter, but the type of fat consumed also plays a significant role in health outcomes. Unsaturated fats found in olive oil, nuts, and fish are associated with cardiovascular benefits. Trans fats — largely removed from the food supply through regulation — carry real health risks. Lumping all fat together as harmful is simply not accurate.

Honey, agave, and fruit juice are often marketed as healthier alternatives to refined sugar, and while whole fruit carries fiber and nutrients that slow sugar absorption, concentrated natural sweeteners are not a free pass. The distinction that matters nutritionally is how much sugar you consume overall, not solely where it came from. Foods with naturally occurring sugar — like whole fruit — are nutritious partly because of what else they contain, not because their sugar is chemically different.

Meal timing and frequency is an area of active research, and structured approaches like intermittent fasting have been studied with mixed but generally modest results for weight management — our piece on intermittent fasting: what the research says covers this honestly. But casually skipping meals, particularly breakfast, often backfires by amplifying hunger and making it harder to make considered food choices later in the day. There is no universal rule here — individual patterns vary considerably.