Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

"Did they cut more calories from their diet ... or did they become more physically active?" asked study author Kevin Hall   a senior investigator with the National Institute of Diabetes and Digestive and Kidney Diseases.
 Hall  had been "puzzled by how quickly the contestants were losing weight." So he contacted the show's physician and began studying the season eight contestants.
Early on   Hall  observed that weight loss was better predicted by food intake  not physical activity alone. But in the long term  the opposite was true.
"You have to be very physically active in order to keep the weight off  " Hall  said.
 Hall 's findings echo previous studies that promote more exercise for long-term weight loss maintenance. However  experts caution that doesn't mean people can neglect their diets in the long run  either.
This method  however  was not able to tell how much of the physical activity was due to normal daily activities -- like cleaning the house or walking the dog -- versus following a workout plan   Hall  said.
Six years later  however  the contestants' resting metabolisms still hadn't sped back up   Hall  showed in a study last year.
For  Hall   metabolic changes are just one part of the puzzle. Genetics may also play a role  as well as social factors that can make it hard for some people to incorporate so much exercise in their daily lives.
 Hall  added that it's not necessarily those who were most physically active during the competition who kept it up six years later.
How some 'Biggest Losers' keep the weight off

Skip in Skip x Embed x Share CLOSE Nashville Predator  Kyle Turris  speaks during media availability at Centennial Sportsplex in Nashville  Tenn.  Wednesday  Nov. 8  2017. Andrew Nelles / The Tennessean
 Kyle Turris  had two points in the Predators' 5-4 shootout win against the Pittsburgh Penguins  which stretched Nashville's season-long winning streak to four games.
 Turris'  strong first impression
 Turris   acquired last Sunday as part of a three-team deal involving the Ottawa Senators and Colorado Avalanche  immediately demonstrated his value Saturday.
Matched up primarily against Penguins captain Sidney Crosby's line   Turris  centered forwards Kevin Fiala and Craig Smith.  He  generated multiple high-quality scoring chances for  himself  and others with  his  speed and playmaking ability  netting  his  first Predators goal in the second period from the slot.
More:  Kyle Turris  scores  his  first goal with the Predators barely two periods into  his  first game
"It felt great  " Turris  said. "It was real exciting. The crowd was awesome."
 Turris'  goal was one of several Nashville scoring chances from the preferred high-danger areas surrounding the Pittsburgh net. The Predators swarmed the slot Saturday  with both of their even-strength goals originating from that section of the ice.  Turris  and Smith each had three high-danger scoring chances  according to naturalstattrick.com.
Predators vs. Penguins: Kyle Turris scores in Nashville's shootout win

NEW YORK (AP) -- Pfizer Inc. said Friday it is pulling its blood pressure drug Thelin off the market and stopping all clinical trials because the drug can cause fatal liver damage.
 Thelin is sold in the European Union  Canada  and Australia as an oral treatment for severe pulmonary arterial hypertension  or high blood pressure in the pulmonary artery. Pfizer said a review of data from clinical trials and post-marketing reports showed a new link to liver injury. It also consulted with experts about the link between Thelin and the deaths of two patients.
 Liver damage was a known side effect of Thelin and similar drugs  the company said. Pfizer said the withdrawal was voluntary and added that it has withdrawn its filing for marketing approval in the U.S.
 Since there are other treatment options  Pfizer said the benefits of Thelin don't outweigh the risks. It is stopping all studies of the oral drug  which Pfizer acquired in 2008 when it bought Encysive Pharmaceuticals Inc. Encysive had been trying to win marketing approval for Thelin since 2005  but the Food and Drug Administration said it was not effective enough. Other agencies only approved the drug for hypertension that was so debilitating that patients' physical activity was severely limited.
 The chemical name of Thelin is sitaxsentan.

Citing liver damage Pfizer withdraws Thelin