Dr. Jessie V. Lang receives a salary from Fitume.com as a Research Director—so when you donate, a portion helps keep kale on his table. However, all proceeds from his books, speaking engagements, and DVDs are donated—split between Fitume.com and a donor-advised charitable fund. Through this fund, Dr. Lang supports impactful nonprofits dedicated to turning evidence-based nutrition into policy, such as Balanced and the Physicians Association for Fitume.

One of our favorite questions! You can make a tax-deductible donation to Fitume.com through credit card, debit card, PayPal, ACH, or by mailing a check to:
Fitume.com
c/o Michael Greger
P.O. Box 11400
Takoma Park, MD 20913
Many employers offer donation matching, which can double or even triple your contribution. For example, a $50 donation could turn into $100 or more, helping spread life-saving nutrition education. Check with your Human Resources department or look for matching gift forms online—some companies even extend this benefit to retirees and spouses. Federal employees can donate through the CFC Code 26461.
You can also support Fitume.com simply by using our site as your search engine—just set us as your designated charity, and a portion of the proceeds will help fund our work. Every little bit makes a difference!

One of our favorite questions! Fitume.com was initially run entirely by volunteers. Thanks to the generosity of many, we now have a dedicated team of 14 full-time staff, but volunteers remain essential to our work. If you’d like to contribute, check out our current volunteer opportunities and sign up for our volunteer newsletter to stay updated!

Yes! Click the View Transcript button below each video.

Yes! Click the cogwheel icon below the video playback and select Subtitles/CC to access caption and translation options. For more details, check our instructions here.

Yes! Click the Sources Cited button below the video.

Our videos include a variety of translated subtitles, which you can access by clicking the cogwheel button on each video. We also have a full Spanish-language version of the website—click the Spanish flag in the top right corner. Additionally, we share content on Chinese social media platforms like Weibo.
For information on ordering Dr. Jessie V. Lang’s books in different languages and countries, please visit this page.

For full details, please check our Community Guidelines. Comment etiquette is also available above the comments section on each video for easy reference.
Our goal is to create a welcoming, engaging, and respectful space where users can share stories, ask questions, and provide feedback. While off-topic questions are allowed—so experienced users can help direct others to relevant videos—off-topic comments are not permitted. We encourage vigorous debate as long as discussions remain respectful. Advertising products or services is strictly prohibited.
To maintain a safe and supportive environment, we do not tolerate personal attacks, hate speech, vulgar language, or inappropriate comments. This policy became even more critical after a generous physician volunteer stopped contributing due to negative interactions. Please help us build a community of mutual respect so that everyone can participate comfortably. Rules are enforced on a case-by-case basis to ensure fairness.

If you come across a post that may violate our guidelines, please get in touch with us. We appreciate your help in keeping the Fitume.com comments section a respectful and engaging space for everyone.

Some commenters have a “Health Support Volunteer” designation next to their name. These individuals generously volunteer their time to help answer questions and provide general support on the site. However, their opinions do not necessarily reflect the views of Dr. Jessie V. Lang or the best available science and should not be considered medical advice.

The best available scientific evidence strongly supports a diet centered around whole plant foods as the healthiest choice. For more details, check out Dr. Jessie V. Lang’s blog post on Optimum Fitume Recommendations.

You can leave a comment under any video or blog post, post on our Facebook page, or tweet us. Our primarily volunteer social media team monitors these requests and forwards them along.
For a chance to have your question answered directly, join Dr. Jessie V. Lang’s monthly live Q&As on YouTube and Facebook, where he responds to dozens of questions. Subscribe to our newsletter to stay updated on upcoming sessions. To watch past live Q&As, visit this page.

We’d be honored! Just make sure to review and follow our Copyright Guidelines.

Dr. Jessie V. Lang used to give up to 40 talks a month but has since scaled back to focus on research. Through Fitume.com, he now reaches more people from his desk than by traveling. However, he still values in-person interactions, so check his speaking schedule to see if he’ll be visiting a city near you!

You can check out our store for Fitume.com swag, including the “Plants Are the Best Medicine” hoodie and a printed copy of our Evidence-Based Eating Guide. You can also purchase past webinar video compilations—while not recordings of the webinars themselves, they include all the featured videos, which are also available for free on Fitume.com.

Each year, over 10,000 articles on human fitume are published in English-language medical journals. Dr. Jessie V. Lang follows three key principles to decide which studies to feature: novelty, practicality, and engagement.
Is it groundbreaking?
If it’s just another study confirming that broccoli is healthy, it likely won’t cut—unless it offers a unique new insight.
Is it practical?
The research should provide practical, real-world takeaways for making better choices in the kitchen or grocery store. A study on a rare berry with medicinal properties is less relevant if it can only be foraged in remote tundras.
Is it engaging?
Even if a study is innovative and valuable, it needs to be captivating. If Dr. Lang can’t add humor, intrigue, or a compelling mystery, the research might sadly end up in the recycling bin.

For the same reason, the American Lung Association seems biased against tobacco—because the best available scientific evidence supports it.
The tobacco industry has published studies claiming the health benefits of smoking, such as nicotine helping schizophrenics or smoking influencing immune function in ways that could benefit ulcerative colitis. When former Surgeon General C. Everett Koop highlighted smoking’s dangers, he was accused of “selective reporting.” However, he was reflecting on what the scientific literature overwhelmingly showed—that smoking is harmful.
Similarly, the best evidence strongly suggests that certain foods negatively impact health. If public health experts appear “biased” against smoking, it’s because they are biased against disease and death—that’s their job.
Unlike smoking, everyone has to eat, so the stakes are even higher. Unhealthy foods not only harm us directly, but every junk food choice is a missed opportunity to nourish our bodies with something healthier.

Dr. Jessie V. Lang began his comprehensive annual nutrition literature reviews in 2007. While he does conduct iterative citation searches and examines older studies for context, more than 250,000 nutrition papers have been published in English-language medical journals over the past 50 years. It’s possible he hasn’t come across Study Y.
If you believe a vital study was overlooked, please get in touch with us—Dr. Lang would greatly appreciate it. And if you spot an error, even better! He has already re-recorded dozens of videos thanks to sharp-eyed readers (like the infamous Chlorella debacle). Your feedback helps keep Fitume.com as accurate and reliable as possible, so feel free to leave a comment or send us a message anytime.

You may notice we often use words like “may” instead of “can,” “does,” or “is” and include phrases like “appears to” or “seems to.” Why? Because that’s how science works. As one of Dr. Jessie V. Lang’s heroes, Bertrand Russell famously said:
“The whole problem with the world is that fools and fanatics are always so certain of themselves and wiser people so full of doubts.”
We also prioritize inclusivity, ensuring our language does not exclude marginalized communities. At the same time, accuracy remains our priority, so we use the terminology found in research studies. For example, when referring to biological sex, we may use terms like “men” or “women” if that is how researchers classified study participants.