Collagen, seaweed and the nutrients that reverse skin ageing – with Dr Craig Rose

Age Better with Liz Earle

March 18, 2026 ∙ 15 mins
Episode 25

About

We spend a fortune on what goes on our skin, but Liz has long believed that what goes in matters just as much, if not more.


In this episode, she talks to Dr Craig Rose, marine biologist and founder of Doctor Seaweed, about the nutrients that midlife women are chronically short on, and what that deficiency is quietly doing to our skin, metabolism, and brains.


This episode is sponsored by Doctor Seaweed who are offering listeners of the show 20% off purchases at doctorseaweed.com when you use the code LIZLOVES at checkout.


In this episode:

-What iodine is and why many women aren't getting enough

-Why iodine is so important for thyroid health - and what happens when levels are low

-The energy skin, hair, nails, and metabolism benefits of optimal iodine levels

-Why seaweed is one of the most natural and sustainable sources of iodine

-Why collagen declines with age and how supplementation can support skin, hair, nails, and more

-What to look for in a high quality collagen supplement


Links mentioned:

·     Doctor Seaweed Collagen+

·     Take the 20-second iodine quiz


More from Craig

·     Follow Doctor Seaweed on Instagram

·     Listen to the Diving Deep podcast


Get in touch with a question for Liz:

 

More from Liz:

 

Some links may be affiliate links, which help support the show at no extra cost to you. Read our Affiliate Policy for more information.

 

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Information

Podcast

Age Better with Liz Earle

Episode

25

Date

March 18, 2026

Length

15 mins
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