Ernaehrung
13 cards from across every topic, each citing a source. Tap one to open it in the feed.
- A calorie is really a water temperature.
A kilocalorie is the energy needed to warm 1 kilogram of water by 1 degree Celsius, about 4.2 kilojoules. What food …
- Caffeine doesn't give energy. It hides tiredness.
The longer you are awake, the more adenosine accumulates in your brain and binds to receptors that make you sleepy. …
- Carrots for night vision were wartime propaganda.
During the Second World War, British officials spread the myth that carrots explained their pilots' night-time success. …
- Fibre isn't food for you – it's food for your bacteria.
What your own enzymes can't split, gut bacteria ferment in the colon. That produces short-chain fatty acids, mainly …
- How your blood sugar stays stable whatever you eat.
Your blood carries only about 4 to 5 grams of sugar, a teaspoon. When the level rises after a meal, beta cells in the …
- Protein costs you a fifth of its calories just to digest.
Digestion itself uses energy, the thermic effect of food. It differs by nutrient: with protein, 20 to 30 percent of the …
- Sugar doesn't make kids hyperactive. Parents just expect it.
A 1995 meta-analysis reviewed 23 controlled studies in which children were given sugar or a sweetener without knowing …
- The numbers 4, 4, 9 and 7 are on every food label, hidden.
Calorie figures are no longer measured but calculated, using the 19th-century Atwater system: 4 kilocalories per gram …
- The rule '8 glasses of water a day' has no source.
In 2002 a kidney physiologist searched for the scientific evidence behind the 8-glasses rule and found none. One likely …
- Tolerating milk as an adult is the exception, not the rule.
Worldwide, most people lose the ability to split lactose after weaning – that is the ancestral mammalian state. The …
- You burn most of your energy lying down.
Think of your energy use as three items. Basal metabolism: breathing, heartbeat, cell maintenance, about 60 to 70 …
- Your stomach sends hunger on a timetable, not on demand.
Ghrelin is the hunger hormone. It is produced mainly in the stomach wall, rises before your usual mealtimes and falls …
- Your tank of fast energy lasts about 30 kilometres.
Your body stores carbohydrate as glycogen: about 400 grams in the muscles and roughly 100 grams in the liver, together …