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  • Is this food making you hungry?

  • It's no surprise

  • Hunger can be triggered not just by our need for food, but by the sight and smell of it

  • Even just thinking about food can stimulate food-seeking behavior

  • When we're hungry

  • our body responds in a number of ways

  • When you're hungry you often feel your stomach rumbling

  • After a couple of hours without food

  • the organ begins contracting to push whatever food remains into the intestines

  • This rumbling is called 'boborygmus

  • When food is lacking

  • cells in the stomach and intestine will also produce ghrelin

  • a hormone that produces feelings of hunger

  • At the same time levels of leptin

  • an appetite-suppressing hormone produced by fat cells, will go down

  • Ghrelin communicates with the hypothalamus in the brain

  • which regulates our basic body functions

  • The vagus nerve sends signals to the brain about how full or empty our stomach is

  • as well as relaying the amount of nutrients in our intestines

  • Neurotransmitters, such as Neuropeptide Y are released

  • sending messages to various parts of the brain in order to stimulate our appetite

  • Key nutrients in your blood, such as glucose, amino acids and fatty acids

  • will be at their lowest when you are hungry

  • This can have a big effect on the brain

  • An empty stomach increases your impulsiveness and makes it harder for you to make long-term decisions

  • You might also get 'hangry'

  • where a lack of food leads to you feeling irritable

  • Carbs break down into glucose, which is required to make your brain function properly

  • When blood glucose levels are low

  • our bodies perceive we are in a life-threatening situation

  • The brain starts sending messages to our organs and glands to increase blood sugar levels

  • One of these, the adrenal gland, releases the stress hormones cortisol and adrenaline

  • triggering our 'fight or flight' response

  • All these body responses are triggered by an actual need for food

  • So why do we desire food like this even when we're not hungry

  • It's because when we see food

  • greater amounts of Ghrelin will be released even if we recently ate

  • Our ancestors might have gone days without food while hunting and gathering

  • Having his hormone stimulate our appetite whenever we spotted a food source kept our species alive

  • That of course doesn't apply today

  • and the hormone has been linked to obesity problems

  • where someone feels hungry even if they don't actually need to eat

  • When we do crave foods, it's usually the fatty, sugary kind

  • This is because this type of food releases opioids into our bloodstream

  • which generate feelings of pleasure and mild euphoria

  • The pleasure and reward we receive from satisfying our food cravings

  • are simply milder versions of what drug addicts experience when they get high

Is this food making you hungry?

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B2 US hungry hormone glucose brain stomach stimulate

What Happens To Your Body When You're Hungry

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