📰 News ⏱ 2 min

How Skipping Meals for a Long Time Affects Different Body Parts

Extended periods without food cause the body to shift from using glucose to using fat‑derived fuels.

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Key Points

4 points

The body switches from sugar to fat as the main energy source.

Ketone bodies are produced by the liver to feed the brain.

Heart, muscles, and hormones change their activity during long fasts.

Scientists observed these changes in carefully designed experiments.

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The liver creates ketone bodies that the brain can use for energy.

Heart rate, muscle metabolism, and hormone levels also adapt during fasting.

Controlled scientific studies have documented these systematic changes across multiple organs.

Understanding these effects helps doctors advise on safe fasting practices.

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8 words

prolonged

lasting a long time

systematic

organized and happening in a regular way

organ

a part inside the body like the heart or brain

controlled study

a test where scientists keep things the same except one thing

significant

important or big change

ketone bodies

special fuel made from fat that the brain can use

glucose

a type of sugar the body usually uses for energy

hormone

a chemical messenger that tells body parts what to do

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