1000-lb Best Friends

In this unique experiment, nine 21st century volunteers subject themselves to the weight loss diets and fitness regimes of previous generations. But have they bitten off less than they can chew?

The Biggest Loser features obese people competing to win a cash prize by losing the highest percentage of weight relative to their initial weight.

Maigrir pour gagner : le défi du Québec

An adorable love story of Park Ji Yong, a good-looking home shopping host, and Sohn Ana, a secluded girl who never leaves home and whose only joy of life is home shopping. (Source: OnDemandKorea)

Five best friends start a challenge to lose 50 pounds each in 120 days to compete in a triathlon.

Dumped by her boyfriend of 15 years for gaining weight, a lawyer gets help from a hotshot personal trainer to get in shape and turn her life around.

I Used To Be Fat is an MTV reality series that follows overweight teens striving to achieve weight loss through means of diet and exercise. Each episode follows one teenager who is paired with a motivational personal trainer. A trainer teaches them new exercise and eating habits over the next few months while offering emotional support. Documented students share their personal trials and tribulations in the series. Several episodes of the show have covered a high school student's last summer before college. These students expressed a desire for a metamorphosis before they start their new lives away from home.

They are two of the most stressful things in life - planning a wedding and losing weight. Ten overweight engaged couples will live together and battle for the wedding of their dreams over a three-month period. Every episode, the couples will face off in a big physical challenge, competing to win one element of their wedding - from the invitations, to the cake, to the rings. Whatever they win will be theirs to keep. Together, they will plan their weddings with the help of the nation's top wedding planners, they will take a vow to eat right and exercise, and world-class trainers and nutritionists will completely overhaul their bodies. At the end of each episode, the couples will step on the scale and be weighed together - the couple who lost the least amount of combined weight that week will be eliminated. In the end, one couple will win their fantasy wedding - a once-in-a-lifetime event - that America will attend.

Celebrity Fit Club is a reality television series that follows eight overweight celebrities as they try to lose weight for charity. Split into two competing teams of four, each week teams are given different physical challenges, and weighed to see if they reached their target weights. They are monitored and supervised by a team that includes a nutritionist, a psychologist, and a physical trainer, the latter of which is former U.S. Marine Harvey Walden IV.

You Are What You Eat is a dieting programme aired in various forms between 2004 and 2007 on British broadcasting company Channel 4, and presented by Gillian McKeith. The fourth series was called You Are What You Eat: Gillian Moves In.

Seven teens from different backgrounds attend a weight loss camp as they embark on their individual journeys of self discovery.

Ran an den Speck – Familien nehmen ab

Telling powerful stories in hourlong episodes, TLC follows medical journeys of morbidly obese people as they attempt to save their own lives. The featured individuals - each weighing more than 600 pounds confront lifelong emotional and physical struggles as they make the courageous decision to undergo high-risk gastric bypass surgery. In addition to drastically changing their appearances, they hope to reclaim their independence, mend relationships with friends and family, and renew their feelings of self-worth.

3 Fat Brides, 1 Thin Dress is a British reality television series hosted by Gillian McKeith that aired on Channel 4. Three brides-to-be are challenged to lose weight for a chance to win the dress of their dream.

This companion series to TLC's popular "My 600-Lb. Life" presents profiles of people who go through extensive surgeries to remove up to 50 pounds of excess skin. Using modern technology and reconstructive surgical options, massive amounts of skin are removed, creating a full-body transformation.

June Shannon ('Mama June') gained fame as the mother of young beauty-pageant contestant 'Honey Boo Boo' (Alana Thompson) on various reality shows. With that notoriety came jokes from comedians and people on social media about her weight. Ending her marriage to Sugar Bear and facing health issues, Mama June wants to slim down so she can start a new life with a new body and, she hopes, a new love.

Weight loss expert Steve Miller moves into the homes of some of the UK’s fattest families, exposing them to the risks their bulging bellies and bad habits have on their health. And he’s not going to hold back until he has turned their ‘house of fatness’ into a ‘house of fitness’.

A bullied teenager turns to beauty pageants as a way to exact her revenge, with the help of a disgraced coach who soon realizes he's in over his head.

Check in on the men and women featured in "My 600lb Life." Since the show, have they maintained their weight loss and continued working toward their goals? We get an update on where they are now and what's changed since the show.

De Afvallers is a Dutch reality television series which first premiered on SBS 6. The series is a spin-off of the American reality television series The Biggest Loser and the SBS 6 weight-loss series Big Diet, which was canceled after two seasons due to low ratings.