Catherine Guthrie
LATEST STORIES
How Anthocyanins Support Eye Health
Anthocyanins are found in pigment-rich foods and target light-induced oxidative stress in ocular tissue. Learn how they work — as well as the best dietary sources.
How Lutein and Zeaxanthin Support Eye Health
These two carotenoids protect the retina from damaging blue light. Learn how they work as well as the best dietary sources.
How Astaxanthin Protects Your Eyes
This potent antioxidant helps protect against dry-eye disease. Learn how it works — as well as the best dietary sources.
Looking to Support Your Eye Health? Try Glutathione
Along with supporting eye health, this antioxidant fights toxicity, chronic disease, and premature aging. Learn how it works — as well as good food sources.
How Omega-3s Support Healthy Eyes
Omega-3s can help ease eyestrain. Learn how they work — as well as the best dietary sources.
The Role Vitamin C Plays to Support Healthy Eyes
This powerful antioxidant helps to protect the eyes from sun damage. Learn how it works — as well as the best dietary sources.
How Vitamin A Supports Eye Health
This powerful antioxidant fights night blindness and dry-eye disease. Learn how it works — as well as the best dietary sources.
Sunglasses: More Than Just a Cool Accessory
Wearing sunglasses isn’t just about style — they’re a crucial line of defense for protecting your vision. Here’s what to look for when choosing your next pair.
How to Eat for Eye Health
When it comes to eating for healthy eyes, carrots are just the beginning. Discover the best nutrients for eye health.
How Ultraprocessed Foods Wreak Havoc on Your Metabolism
Eating UPFs can undermine your digestion, gut health, and metabolism. Here’s why.
6 Ways to Cut Back on Ultraprocessed Foods (UPFs)
UPFs make up almost three-quarters of America’s food supply. Here are some tips to help reduce your consumption of ultraprocessed foods.
Anatomy of a Gluten-Free Hamburger Bun
Gluten-free hamburger buns may seem like a healthier choice, but they often contain many ultraprocessed ingredients. Here’s a look at what’s inside.
How Does Eating Sugar Affect Insulin?
Discover how excessive sugar disrupts natural blood-sugar levels and contributes to metabolic disorders.
Are Artificial Sweeteners Better Than Sugar?
Here’s what the research says.
Is It OK to Eat Real Honey and Maple Syrup If I’m Avoiding Sugar?
It depends. Learn more.
Does Food Combining Reduce Sugar’s Impact?
The short answer is yes. Here’s why.
Why Is Sugar So Hard to Identify in Processed Foods?
Processed foods are pumped full of sugars for a variety of reasons. Here’s what you need to know.
How Does Sugar Affect Mood?
Learn more about the effect that sugar and inflammation have on your mood.
How Does Sugar Impact the Liver?
The liver plays a key role in processing sugar, but eating too many sugary foods and drinks can strain this essential organ. Here’s why.
The Truth About Ultraprocessed Foods
These products are everywhere. Here’s a closer look at the many ways these food products can harm your health — and why it’s worth the effort to avoid them when you can.
Is It Possible to Have a Healthy Relationship With Sugar?
Yes. Here’s some expert advice.




















