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How do scientists know how many calories people actually eat?

It sounds like a simple question, but measuring food intake is actually extremely difficult. If someone says they are eating 2000 calories per day, how accurate is that number likely to be?

In this episode, we explore the evidence behind calorie underreporting, why self-reported food intake is often inaccurate, and how researchers verify whether people are truly eating what they say they are.

We discuss:
- Why food diaries and dietary recalls are often unreliable
- The science of calorie underreporting
- How researchers try to verify what people eat
- Why people often underreport intake without realising it
- The implications for nutrition and obesity research
- What this means for anyone trying to lose weight

Rather than blaming individuals, we examine why accurately measuring food intake is so difficult (even under research conditions) and how scientists have developed better methods to study energy balance.

Whether you're interested in nutrition, weight loss, or how research is conducted, this episode offers an evidence-based look at one of the most important (and misunderstood) topics in nutrition science.

P.S., If you want to support us and would like monthly lifting workouts, you can join the Momentum by Sohee fitness app. http://momentumbysohee.com

If you are interested in fat loss science, you can purchase Ben's best-selling comprehensive fat loss book, Everything Fat Loss. http://geni.us/EverythingFatLoss

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GLP-1 medications such as Ozempic, Wegovy, Zepbound and Mounjaro have become one of the most controversial topics in health and fitness.

Are they “cheating”? Are people with obesity simply lacking willpower? Are these medications safe? And what does the research actually show about weight loss, appetite, muscle retention, metabolic health, and long-term outcomes?

In this episode, we sit down with Dr. Spencer Nadolsky for a comprehensive, evidence-based deep dive into GLP-1s. Rather than relying on social media opinions, we examine what the scientific literature says about:

• How GLP-1 medications work
• Expected weight loss outcomes
• Effects on hunger and appetite
• Muscle loss and body composition
• Safety and side effects
• Long-term use
• Common misconceptions and myths

As always, our goal was not necessarily to promote and sensationalize nor condemn and dismiss GLP-1s, but to provide an objective discussion of the current evidence so you can make more informed decisions.

If you’ve seen strong opinions online and wanted a balanced explanation grounded in research, this episode is for you.

P.S., If you want to support us and would like monthly lifting workouts, you can join the Momentum by Sohee fitness app. http://momentumbysohee.com

If you are interested in fat loss science, you can purchase Ben's best-selling comprehensive fat loss book, Everything Fat Loss. http://geni.us/EverythingFatLoss

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Most people don't struggle because they don't know what to do. They struggle because turning knowledge into consistent action is much harder than it sounds.

Why is it so difficult to stick to healthy habits? Why do we keep falling back into old routines, even when we genuinely want to change? And is motivation really the answer?

In this episode of the All or Something Podcast, we're joined by Rachel Pendakur to explore the science of turning good intentions into lasting habits. We discuss why knowledge alone rarely changes behaviour, what psychology tells us about consistency and how to make healthy choices easier rather than relying on willpower alone.

Whether your goal is to exercise more regularly, improve your nutrition, lose weight, or simply stop feeling like you're constantly starting over, this conversation is packed with practical, evidence-based strategies that can help.

In this episode we discuss:
- Why knowing what to do isn't enough
- The psychology of behaviour change
- Why motivation comes and goes
- Building habits that actually last
- Common barriers to consistency
- The role of your environment in shaping behaviour
- Practical strategies to make healthy choices easier
- Why willpower isn't the whole story

If you enjoy evidence-based conversations about fitness, nutrition, health, and behaviour change, subscribe for new episodes every week.

P.S., If you want to support us and would like monthly lifting workouts, you can join the Momentum by Sohee fitness app. http://momentumbysohee.com

If you are interested in fat loss science, you can purchase Ben's best-selling comprehensive fat loss book, Everything Fat Loss. http://geni.us/EverythingFatLoss