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Fact check: What diet programs has Oprah Winfrey endorsed in the past?

Checked on September 12, 2025

1. Summary of the results

The analyses provided suggest that Oprah Winfrey has endorsed Weight Watchers as a diet program in the past [1] [2] [3] [4]. According to [1], Oprah used Weight Watchers in 2015, became its spokesperson and part-owner, and lost 42 pounds with the program. Additionally, [5] mentions that Oprah Winfrey has worked with 'The Best Life Diet' by Bob Greene, which could be another diet program she has endorsed [5]. However, it is essential to note that some sources discuss Oprah's use of weight loss medications, such as semaglutide, Ozempic, or Wegovy, as part of her weight loss approach [6] [7], but these are not diet programs. It is also worth mentioning that there have been fraudulent marketing schemes using Oprah's name to promote keto gummies without her consent [8].

2. Missing context/alternative viewpoints

Some analyses highlight the importance of considering Oprah's holistic approach to weight loss, which includes movement, mindset work, nutritional balance, sleep, and stress management [7]. This suggests that her weight loss journey is not solely dependent on diet programs, but rather a combination of factors. Furthermore, [6] and [9] discuss Oprah's investment in Weight Watchers and its integration of weight loss medications into its business model, which could be seen as a potential conflict of interest. It is also crucial to consider the lack of information on other diet programs Oprah may have endorsed, as the analyses primarily focus on Weight Watchers and her use of weight loss medications. Alternative viewpoints, such as the potential benefits and drawbacks of using weight loss medications, are also worth exploring [6] [7].

3. Potential misinformation/bias in the original statement

The original statement asks about diet programs Oprah Winfrey has endorsed in the past, but does not provide any context or clarification on what constitutes a "diet program." This lack of clarity could lead to misinformation or bias, as some sources may interpret the question as including weight loss medications or other approaches to weight loss. Additionally, the analyses reveal that Oprah's name has been used in fraudulent marketing schemes [8], which could contribute to misinformation and bias. It is essential to consider the potential benefits and drawbacks of each diet program or approach to weight loss, as well as the potential conflicts of interest, to provide an accurate and unbiased assessment [6] [9]. The sources that benefit from this framing are those that promote Weight Watchers or other diet programs endorsed by Oprah, as well as those that sell weight loss medications [1] [3] [4].

Want to dive deeper?
What is the difference between Weight Watchers and other diet programs endorsed by Oprah?
How much weight did Oprah lose with Weight Watchers in 2016?
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Has Oprah ever endorsed any plant-based diet programs?
What role did Oprah play in the success of Weight Watchers after her 2015 investment?