The Science of Fasting

By Published Medically reviewed by Dr. Tro Kalayjian, DOReviewed

Fasting raises practical questions as well as scientific ones: how schedules differ, what medical considerations matter, and how fasting relates to protein, muscle and exercise. In this full-length presentation, Dr. Laura Buchanan brings those topics together.

This lecture is useful if you want a fuller explanation than a short fasting overview. The outline below can help you identify the parts most relevant to your questions.

The Science of Fasting · Dr. Laura Buchanan · 52:08

In this lecture

  • The science behind fasting
  • Timing, duration and common fasting schedules
  • Medical considerations and electrolytes
  • Muscle, protein timing and exercise
  • Questions and discussion

Use the lecture to frame your questions

As you watch, consider which part needs more discussion with your care team: timing and duration, electrolyte guidance, or how a fasting approach would fit around exercise and protein intake. The presentation provides a starting point for those conversations, while the linked guides below let you revisit common questions in writing.

Continue learning

Facebook
Twitter
LinkedIn
Email

Have questions about what you’ve learned? Join health coaches daily and metabolic providers weekly for live meetings in the Toward Health app.

Choose your next step.

Explore personalized care or continue learning with a self-guided course related to this topic.

Read more articles from our team

Infographic titled '10-Year Risk Reduction Across Interventions' with a blue table of percent reductions across interventions and outcomes.

Can Real-Food Ketogenic Diets Cut

TOWARD HEALTH Announces 120-Patient Study Showing Sustained Weight Loss and Major Improvements in AHA PREVENT-Estimated Cardiovascular Risk One year of...

Landscape 16:9. Dr. Tro Kalayjian beside a liver illustration. Text: IS FRUCTOSE HARMFUL? — WHAT HUMAN STUDIES FOUND.

Fructose Is More Than a

Controlled human studies examine how fructose affects liver fat and insulin sensitivity, including when calories and body weight are held...

Find more resources for your health.

Explore articles and videos by condition.

Browse all conditions

Apply Now