All it takes for a diet to blow up is a few celebrities to start buzzing about it. That's exactly what happened with the F-Factor diet after Megyn Kelly, Katie Couric, and Olivia Culpo raved about it.

When we think about dieting, we immediately imagine restricting our calories, upping our gym visits and skipping happy hours. So when we heard about a buzzy program that supposedly lets you eat out, ...

The “F-Factor” diet made its first waves in 2006, when nutritionist Tanya Zuckerbrot debuted her eating plan and lifestyle manual, The F-Factor Diet: Discover the Secret to Permanent Weight Loss. But ...

Of the many different ways there are to eat for weight loss, some emphasize portion size, while others focus on eliminating specific foods or food groups. Others still zero in on macronutrients and ...

F-Factor Diet creator Tanya Zuckerbrot, who has coached everyone from Megyn Kelly to Olivia Culpo, is fending off accusations that her protein bars and powders cause severe side effects ranging from ...

If there’s such a thing as a celebrity dietitian, it’s Tanya Zuckerbrot, the elegant, ebullient creator of the F-Factor Diet — the conventional-wisdom-flouting plan that touts carbs, dining out, and ...

Say goodbye to fad diets, starving yourself and counting calories. Celebrity dietitian Tanya Zuckerbrot founded F-Factor after putting patients with high cholesterol on a high-fiber, low carb diet, ...

Katie Couric is doing it. So is supermodel Molly Sims as well as a slew of New York City’s elite. “We have CEOs and CFOs from all disciplines whether it’s finance or fashion. We’re really dealing with ...

The creator of the popular F-Factor Diet claims an online influencer tried to destroy her fitness company by harassing her with a months-long campaign of lies about her business on Instagram, ...

Katy Perry follows Harley Pasternak’s 5 Factor Diet. According to the diet, you eat five small meals or three meals and two snacks made up of ingredients from five categories and exercise five times a ...