Diet: Can we be healthy and sustainable?

The Naked Scientists Podcast

Dr Chris Smith

Natural Sciences, Science, Science Radio, Naked Scientists, Health & Fitness, Engineering, Medicine, Technology, Life Sciences

4.6 • 958 Ratings

🗓️ 21 August 2017

⏱️ 58 minutes

🔗️ Recording | iTunes | RSS

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Summary

This week, food is on the menu! Do any of the diets that you hear about actually work? What's best to eat for the health of the planet? And will the steak of the future grow in a test tube? Plus, scientists fix cells with the wrong numbers of chromosomes and how birds use magnetic fields to navigate. Like this podcast? Please help us by supporting the Naked Scientists

Transcript

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0:00.0	I have you loud and clear.
0:04.3	Hello.
0:05.3	Hello.
0:06.3	Welcome.
0:07.3	Science and that is the same physics, medicine, nature, space, time, the brain, life, the universe.
0:17.0	Hello this week, food is on the menu. Do any of the diets that we hear about actually work?
0:23.0	And what's the best thing to eat for the health of our planet?
0:26.0	Also, will the steak of the future grow in a test tube?
0:30.0	And in the news, a new way to fix cells with the wrong number of chromosomes,
0:34.0	plus how birds use magnetic fields to navigate. I'm Georgia Mills. I'm Chris Smith and
0:40.0	this is the Naked Scientist. The Naked Scientist podcast is powered by UKfast.co.uk.
0:46.7	And we kick off with a look at the news and our top story this week is how
0:56.8	scientists have discovered a way to put right cells that have got the wrong
1:00.4	numbers of chromosomes. Chromosomes are the chunks of DNA that contain
1:03.9	our genes. Now normally human cells contain 23 pairs of chromosomes with one of
1:09.7	each of those pairs coming from each of our two parents. But occasionally something
1:14.1	goes wrong and one or more extra copies of a chromosome can crop up in some or all of
1:19.2	our cells. This happens quite often in the sex chromosomes.
1:23.2	These are the X and Y chromosomes you have if you're a man,
1:25.9	and the two X chromosomes that you normally carry if you're a woman.
1:29.3	About one in 500 men has an extra X chromosome inosome in their cells and this can affect their
1:34.3	fertility and it does so by preventing healthy sperm production. But now James
	...

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