Dr. Hatem El-Nagar
@hatemelnagar.bsky.social
Certified Food Safety Consultant | Writer on Medium.
I make food safer and science simpler—for your health, your plate, and the planet
I make food safer and science simpler—for your health, your plate, and the planet
Reposted by Dr. Hatem El-Nagar
Holiday meals bring together loved ones and wonderful dishes and… lots of leftovers. After #cooking our #Thanksgiving dinners, it's common to leave the #food out for hours so everyone can come back for more through the evening. Big mistake.
How Long Can Cooked Food Sit Out?
Whether you cook for a large gathering or just yourself, you’ll want to know what happens after just two hours, and especially after four…
medium.com
November 25, 2025 at 5:05 PM
Holiday meals bring together loved ones and wonderful dishes and… lots of leftovers. After #cooking our #Thanksgiving dinners, it's common to leave the #food out for hours so everyone can come back for more through the evening. Big mistake.
The most dangerous ingredient in your kitchen isn’t raw chicken.
It’s time.
I broke down the 2–4 hour rule in a story that might save a dinner or a life.
medium.com/wise-well/ho...
#foodsafety #food #science #health #publichealth #sustainability #kitchen #cooking #environment
It’s time.
I broke down the 2–4 hour rule in a story that might save a dinner or a life.
medium.com/wise-well/ho...
#foodsafety #food #science #health #publichealth #sustainability #kitchen #cooking #environment
How Long Can Cooked Food Sit Out?
Whether you cook for a large gathering or just yourself, you’ll want to know what happens after just two hours, and especially after four…
medium.com
November 25, 2025 at 8:28 AM
The most dangerous ingredient in your kitchen isn’t raw chicken.
It’s time.
I broke down the 2–4 hour rule in a story that might save a dinner or a life.
medium.com/wise-well/ho...
#foodsafety #food #science #health #publichealth #sustainability #kitchen #cooking #environment
It’s time.
I broke down the 2–4 hour rule in a story that might save a dinner or a life.
medium.com/wise-well/ho...
#foodsafety #food #science #health #publichealth #sustainability #kitchen #cooking #environment
What Science Tells Us About How Your Pet’s Dinner Affects Your Family’s Health
medium.com/the-quantast...
#food #science #pets #foodsafety #health #publichealth #culture
medium.com/the-quantast...
#food #science #pets #foodsafety #health #publichealth #culture
November 18, 2025 at 5:23 PM
What Science Tells Us About How Your Pet’s Dinner Affects Your Family’s Health
medium.com/the-quantast...
#food #science #pets #foodsafety #health #publichealth #culture
medium.com/the-quantast...
#food #science #pets #foodsafety #health #publichealth #culture
🐶🔬 Your pet’s food can carry the same bacteria behind hospital outbreaks.
New research shows how microbes move from the bowl to your hands, floors, and kids — and what actually keeps families safe.
👉 Read the full story:
medium.com/the-quantast...
#food #foodsafety #science #health #pets
New research shows how microbes move from the bowl to your hands, floors, and kids — and what actually keeps families safe.
👉 Read the full story:
medium.com/the-quantast...
#food #foodsafety #science #health #pets
What Science Tells Us About How Your Pet’s Dinner Affects Your Family’s Health
Recent outbreaks, recalls, and fresh research show just how easily microbes move from the pet bowl into the human home—and what science…
medium.com
November 16, 2025 at 3:17 PM
🐶🔬 Your pet’s food can carry the same bacteria behind hospital outbreaks.
New research shows how microbes move from the bowl to your hands, floors, and kids — and what actually keeps families safe.
👉 Read the full story:
medium.com/the-quantast...
#food #foodsafety #science #health #pets
New research shows how microbes move from the bowl to your hands, floors, and kids — and what actually keeps families safe.
👉 Read the full story:
medium.com/the-quantast...
#food #foodsafety #science #health #pets
Stop throwing good food in the trash.
Expiration dates are mostly made up — and they’re costing us billions.
Here’s the truth food companies don’t want you to know:
medium.com/the-environm...
#foodsafety #food #sustainability #health #science #environment #publichealth #culture
Expiration dates are mostly made up — and they’re costing us billions.
Here’s the truth food companies don’t want you to know:
medium.com/the-environm...
#foodsafety #food #sustainability #health #science #environment #publichealth #culture
Stop Wasting Good Food: What Expiration Dates Don’t Tell You
Uncovering the truth behind food labels to save money and reduce waste
medium.com
November 15, 2025 at 6:41 PM
Stop throwing good food in the trash.
Expiration dates are mostly made up — and they’re costing us billions.
Here’s the truth food companies don’t want you to know:
medium.com/the-environm...
#foodsafety #food #sustainability #health #science #environment #publichealth #culture
Expiration dates are mostly made up — and they’re costing us billions.
Here’s the truth food companies don’t want you to know:
medium.com/the-environm...
#foodsafety #food #sustainability #health #science #environment #publichealth #culture
@cfstruefood.bsky.social
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:25 PM
@cfstruefood.bsky.social
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
@efsa.europa.eu
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:24 PM
@efsa.europa.eu
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
@primpker.bsky.social
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:24 PM
@primpker.bsky.social
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
@fda.gov
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:23 PM
@fda.gov
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
@fao.org
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:23 PM
@fao.org
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 3:19 PM
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
#foodsafety #food #science
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
#foodsafety #food #science
The Astonishing Truth About the Salmonella Outbreak Hiding in Your Tomatoes
And how to prevent Salmonella infection and stay safe when eating fresh produce
medium.com
November 8, 2025 at 8:11 AM
You’ve probably worried about raw chicken — but have you ever thought about your tomatoes? 🍅
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
#foodsafety #food #science
Scientists just traced a 14-year Salmonella outbreak to small tomatoes from Sicily. I unpack how it happened and what you can do to stay safe at home.
medium.com/illumination...
#foodsafety #food #science
Reposted by Dr. Hatem El-Nagar
Raw cookie dough, raw shellfish, raw milk, undercooked beef or eggs. Those are just a few of items on a long list of foods that food safety experts and health professionals would not eat, period, based on this writer's interview with several of them.
medium.com/wise-well/fo... #food #health
medium.com/wise-well/fo... #food #health
Foods That Food Safety Experts Refuse to Eat
I spoke with scientists and public health professionals from around the world to reveal the hidden risks in everyday foods
medium.com
October 27, 2025 at 9:52 PM
Raw cookie dough, raw shellfish, raw milk, undercooked beef or eggs. Those are just a few of items on a long list of foods that food safety experts and health professionals would not eat, period, based on this writer's interview with several of them.
medium.com/wise-well/fo... #food #health
medium.com/wise-well/fo... #food #health
Ever wonder what foods food safety experts never touch?
I spoke with scientists, consultants, and public health pros from around the world, and their answers might surprise you.
medium.com/wise-well/fo...
I spoke with scientists, consultants, and public health pros from around the world, and their answers might surprise you.
medium.com/wise-well/fo...
Foods That Food Safety Experts Refuse to Eat
I spoke with scientists and public health professionals from around the world to reveal the hidden risks in everyday foods
medium.com
October 27, 2025 at 2:20 PM
Ever wonder what foods food safety experts never touch?
I spoke with scientists, consultants, and public health pros from around the world, and their answers might surprise you.
medium.com/wise-well/fo...
I spoke with scientists, consultants, and public health pros from around the world, and their answers might surprise you.
medium.com/wise-well/fo...
My grandmother’s infection wasn’t random. It started with dinner.
A new study shows nearly 1 in 5 urinary infections may begin with contaminated meat.
medium.com/illumination...
#foodsafety #food #science #health #medicine
A new study shows nearly 1 in 5 urinary infections may begin with contaminated meat.
medium.com/illumination...
#foodsafety #food #science #health #medicine
The Hidden Foodborne Crisis That Made My Grandmother Sick
A new study reveals that nearly one in five urinary infections may begin with contaminated meat, exposing a silent threat hiding on our…
medium.com
October 25, 2025 at 8:22 AM
My grandmother’s infection wasn’t random. It started with dinner.
A new study shows nearly 1 in 5 urinary infections may begin with contaminated meat.
medium.com/illumination...
#foodsafety #food #science #health #medicine
A new study shows nearly 1 in 5 urinary infections may begin with contaminated meat.
medium.com/illumination...
#foodsafety #food #science #health #medicine
Honored to be featured in Insightful Conversations (Health and Science Publication) by Dr Mehmet Yildiz on Medium. We discussed my journey from veterinarian to food safety consultant and storyteller, and why safe food is the foundation of well-being.
medium.com/health-scien...
#foodsafety #science
medium.com/health-scien...
#foodsafety #science
Insightful Conversations with Dr. Hatem El-Nagar
A veterinarian, a certified Food Safety and Quality Consultant, and an experienced scholarly writer
medium.com
October 6, 2025 at 2:47 PM
Honored to be featured in Insightful Conversations (Health and Science Publication) by Dr Mehmet Yildiz on Medium. We discussed my journey from veterinarian to food safety consultant and storyteller, and why safe food is the foundation of well-being.
medium.com/health-scien...
#foodsafety #science
medium.com/health-scien...
#foodsafety #science
How long can you safely keep cooked chicken at room temperature before it should be refrigerated or discarded?
A) 4 hours
B) 3 hours
C) 2 hours
D) 5 hours
#foodsafety #food #science
A) 4 hours
B) 3 hours
C) 2 hours
D) 5 hours
#foodsafety #food #science
October 5, 2025 at 4:55 PM
How long can you safely keep cooked chicken at room temperature before it should be refrigerated or discarded?
A) 4 hours
B) 3 hours
C) 2 hours
D) 5 hours
#foodsafety #food #science
A) 4 hours
B) 3 hours
C) 2 hours
D) 5 hours
#foodsafety #food #science
Supply chains remain a black box. Blockchain turns that haystack into a glass box.
🍣 Diners could soon trace every meal from farm to fork. Safer food. Trusted systems. Less waste.
👉 Read more:
medium.com/rooted-publi...
#FoodSafety #Blockchain #Sustainability #food #restaurant #science #health
🍣 Diners could soon trace every meal from farm to fork. Safer food. Trusted systems. Less waste.
👉 Read more:
medium.com/rooted-publi...
#FoodSafety #Blockchain #Sustainability #food #restaurant #science #health
The Secret Tech That Could Finally Make Dining Out Safer
A new study shows blockchain menus don’t just build trust. They cut waste, boost sustainability, and even change how much we’re willing to…
medium.com
October 1, 2025 at 5:10 PM
Supply chains remain a black box. Blockchain turns that haystack into a glass box.
🍣 Diners could soon trace every meal from farm to fork. Safer food. Trusted systems. Less waste.
👉 Read more:
medium.com/rooted-publi...
#FoodSafety #Blockchain #Sustainability #food #restaurant #science #health
🍣 Diners could soon trace every meal from farm to fork. Safer food. Trusted systems. Less waste.
👉 Read more:
medium.com/rooted-publi...
#FoodSafety #Blockchain #Sustainability #food #restaurant #science #health
Would you eat hammerhead shark without knowing it?
A new study shows most shark meat sold in the U.S. is mislabeled. Sometimes hiding endangered species & toxic mercury levels. I unpack what that means for your plate and the oceans.
medium.com/wise-well/sh...
A new study shows most shark meat sold in the U.S. is mislabeled. Sometimes hiding endangered species & toxic mercury levels. I unpack what that means for your plate and the oceans.
medium.com/wise-well/sh...
Shark Meat Scandal Threatens Health of Humans and Oceans
Endangered hammerheads sold under vague labels in US stores put families at risk of toxic mercury and oceans at risk of species collapse
medium.com
September 30, 2025 at 11:21 AM
Would you eat hammerhead shark without knowing it?
A new study shows most shark meat sold in the U.S. is mislabeled. Sometimes hiding endangered species & toxic mercury levels. I unpack what that means for your plate and the oceans.
medium.com/wise-well/sh...
A new study shows most shark meat sold in the U.S. is mislabeled. Sometimes hiding endangered species & toxic mercury levels. I unpack what that means for your plate and the oceans.
medium.com/wise-well/sh...
Hotel buffets look like luxury. Behind the scenes?
Mountains of wasted food.
In Sharm El Sheikh, we used AI to track every tray—and cut waste by 12% in a year.
Here’s what hotels taught me about waste—and 6 easy fixes you can use at home:
medium.com/the-environm...
#foodwaste #sustainability
Mountains of wasted food.
In Sharm El Sheikh, we used AI to track every tray—and cut waste by 12% in a year.
Here’s what hotels taught me about waste—and 6 easy fixes you can use at home:
medium.com/the-environm...
#foodwaste #sustainability
What Really Happens Behind Hotel Buffets — And 6 Easy Ways to Stop Wasting Food at Home
Hotels waste mountains of food. Here’s what I saw, how we fixed it, and how you can slash waste and costs in your own kitchen
medium.com
September 21, 2025 at 7:51 PM
Hotel buffets look like luxury. Behind the scenes?
Mountains of wasted food.
In Sharm El Sheikh, we used AI to track every tray—and cut waste by 12% in a year.
Here’s what hotels taught me about waste—and 6 easy fixes you can use at home:
medium.com/the-environm...
#foodwaste #sustainability
Mountains of wasted food.
In Sharm El Sheikh, we used AI to track every tray—and cut waste by 12% in a year.
Here’s what hotels taught me about waste—and 6 easy fixes you can use at home:
medium.com/the-environm...
#foodwaste #sustainability
Food delivery feels effortless. But is it always safe?
My latest story uncovers the hidden risks behind ready-to-eat meals and how you can protect yourself.
medium.com/wise-well/th...
My latest story uncovers the hidden risks behind ready-to-eat meals and how you can protect yourself.
medium.com/wise-well/th...
The Hidden Dangers of Food Delivery
A recent Salmonella outbreak is one example of many food-delivery risks. Here’s how to protect yourself with your next DoorDash or Grubhub…
medium.com
September 18, 2025 at 3:18 AM
Food delivery feels effortless. But is it always safe?
My latest story uncovers the hidden risks behind ready-to-eat meals and how you can protect yourself.
medium.com/wise-well/th...
My latest story uncovers the hidden risks behind ready-to-eat meals and how you can protect yourself.
medium.com/wise-well/th...
What really happens when kids blow out birthday candles?
A Clemson study found cake frosting gets 1,400% more bacteria after the big wish.
Most germs are harmless — but not all.
Here’s how parents can keep the tradition fun and safe.
medium.com/stem-parenti...
A Clemson study found cake frosting gets 1,400% more bacteria after the big wish.
Most germs are harmless — but not all.
Here’s how parents can keep the tradition fun and safe.
medium.com/stem-parenti...
The Disgusting Truth About Blowing Out Birthday Candles
A study found birthday cake bacteria jump 1,400% after blowing out candles. Here’s how to keep the magic without the microbes
medium.com
September 17, 2025 at 1:10 PM
What really happens when kids blow out birthday candles?
A Clemson study found cake frosting gets 1,400% more bacteria after the big wish.
Most germs are harmless — but not all.
Here’s how parents can keep the tradition fun and safe.
medium.com/stem-parenti...
A Clemson study found cake frosting gets 1,400% more bacteria after the big wish.
Most germs are harmless — but not all.
Here’s how parents can keep the tradition fun and safe.
medium.com/stem-parenti...
September 11, 2025 at 1:33 PM
We all do it — sniff the milk, check the color, taste a bite. But none of these can tell you if food is truly safe.
My latest piece explains why the “sniff test” fails, and what really works.
Read here:
medium.com/wise-well/ca...
medium.com/wise-well/ca...
Can We Really Smell Unsafe Food?
Trusting your nose is a myth. Here’s how to know if food is truly safe.
medium.com
September 11, 2025 at 11:07 AM
We all do it — sniff the milk, check the color, taste a bite. But none of these can tell you if food is truly safe.
My latest piece explains why the “sniff test” fails, and what really works.
Read here:
medium.com/wise-well/ca...
medium.com/wise-well/ca...
🥚 Organic? Cage-Free? Still Not Safe.
Egg cartons promise purity. But behind the labels, outbreaks are rising.
In my latest story, I break down the science behind egg safety and why your morning scramble might come with more than just protein.
medium.com/wise-well/ar...
Egg cartons promise purity. But behind the labels, outbreaks are rising.
In my latest story, I break down the science behind egg safety and why your morning scramble might come with more than just protein.
medium.com/wise-well/ar...
Are Organic or Cage-Free Eggs Safer? Everything You Need To Know
Misleading labels sound good but don’t guarantee safety. Here’s what to know before you buy another dozen.
medium.com
September 2, 2025 at 6:14 PM
🥚 Organic? Cage-Free? Still Not Safe.
Egg cartons promise purity. But behind the labels, outbreaks are rising.
In my latest story, I break down the science behind egg safety and why your morning scramble might come with more than just protein.
medium.com/wise-well/ar...
Egg cartons promise purity. But behind the labels, outbreaks are rising.
In my latest story, I break down the science behind egg safety and why your morning scramble might come with more than just protein.
medium.com/wise-well/ar...