![salad-cucumbers-health-food-diet-fitness-betterment-motto-stock](https://api.time.com/wp-content/uploads/2016/01/salad-cucumbers-health-food-diet-fitness-betterment.jpg?quality=85&w=2400)
Little is harder than losing weight and keeping it off for good, yet many find a way. Exactly how goes deeper than diet and exercise, according to new science. Here’s what else caught our attention in health news this week. (Sign up for the TIME Health newsletter for more.)
The weight loss trap: why your diet isn’t working
![healthiest foods, health food, diet, nutrition, time.com stock, cauliflower, vegetables](https://api.time.com/wp-content/uploads/2015/02/time-50-healthiest-foods-cauliflower.jpg?quality=75&w=2400)
Here’s the best-kept secret about weight loss: No single diet—from low carb and paleo to low fat and vegan—will work for everyone. Scientists have found that individual responses to different diets vary enormously.
Zika was spreading long before experts realized it
New studies shed light on Zika’s undetected spread through Central and South America and into the United States.
Why Instagram is the worst social media for mental health
![Woman using phone in bed](https://api.time.com/wp-content/uploads/2017/03/time-health-stock-sleep-bed-night-phone.jpg?quality=75&w=2400)
Do you ever “compare and despair” when scrolling through your Instagram feed? You’re not alone. A new survey links the service to high levels of anxiety, depression, bullying and FOMO, or the “fear of missing out.”
5 weight loss tips from people who have actually done it
For anyone searching for the best way to lose weight, the most useful tips come from people who have successfully shed pounds.
What the World Health Organization’s new leader must tackle
The newly elected leader of the WHO will have to fight fight a range of public-health problems.
You Asked: What’s the best way to stare at screens all day?
![TIME.com stock photos Computer keyboard](https://api.time.com/wp-content/uploads/2015/01/computer-keyboard-typing-4.jpg?quality=75&w=2400)
If you’re not sleeping, you’re probably in front of one. Here are the healthiest, safest ways to deal with a screen-saturated day. (Hint: Adjusting your monitors will help.)
6 best mineral sunscreens to bring to the beach
![top view woman summer stuff beach-sunscreen](https://api.time.com/wp-content/uploads/2017/05/beach-sunscreen.jpg?quality=75&w=2400)
These sunblocks, all of which use natural ingredients instead of chemical ones, scored high on the Environmental Working Group’s new annual report.
Here’s what skipping breakfast does to your body
It may help you burn more calories, but giving up the morning meal might also have a downside.
More Must-Reads from TIME
- Welcome to the Noah Lyles Olympics
- Melinda French Gates Is Going It Alone
- What to Do if You Can’t Afford Your Medications
- How to Buy Groceries Without Breaking the Bank
- Sienna Miller Is the Reason to Watch Horizon
- Why So Many Bitcoin Mining Companies Are Pivoting to AI
- The 15 Best Movies to Watch on a Plane
- Want Weekly Recs on What to Watch, Read, and More? Sign Up for Worth Your Time
Write to Mandy Oaklander at mandy.oaklander@time.com