New Scientist
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In this week’s issue: How to understand your risk of Alzheimer’s - and what you can really do about it.

Grab a copy in shops now or download our app for digital editions.⁠
www.newscientist.com/issue/3564/
newscientist.com
Just because a food is ultra-processed doesn’t mean it is unhealthy. Regulation and eating advice must reflect this, say Julia Belluz and Kevin Hall, co-authors of Food Intelligence: The science of how food both nourishes and harms us
Why not all ultra-processed foods are bad for you
Just because a food is ultra-processed doesn’t mean it is unhealthy. Regulation and eating advice must reflect this, say Julia Belluz and Kevin Hall, co-authors of Food Intelligence: The science of how food both nourishes and harms us
www.newscientist.com
newscientist.com
In this week’s issue: How to understand your risk of Alzheimer’s - and what you can really do about it.

Grab a copy in shops now or download our app for digital editions.⁠
www.newscientist.com/issue/3564/
newscientist.com
In swamps and marshes, people occasionally see mysterious blue-tinged flashes of light above water, which have commonly been associated with ghosts or spirits. Now physicists may have finally worked out what causes them.
We may finally know what causes will-o’-the-wisps
Mysterious flashes of light seen in swamps and bogs could be caused by burning methane or other gases, ignited by sparks that fly between bubbles in water
www.newscientist.com