Category: Motivational

Opinion: I teach calculus at Berkeley. Some of my students can’t do middle school math

Aug 16, 2026

“I teach mathematics at UC Berkeley. Three days a week, I stand in front of lecture halls with 500 to 1,400 students. By the second week of the semester, I already know who is in trouble. Some students are five to eight years behind in mathematics. Office hours that should be spent discussing integrals instead become lessons on fractions and basic algebra you would expect students to learn in middle school.”

https://sfstandard.com/opinion/2026/08/15/uc-berkeley-sat-test-blind-admissions-math-scores/

From Stage 4 Cancer to an Ironman at 86: The TRUE Story of Dr. Ruth Heidrich

Ruth Heidrich was 47 years old, a marathon runner, an Air Force logistician, and a systems engineer when she was told she had stage 4 breast cancer.

Her first reaction was disbelief: “How could I get cancer? I run marathons.”

This is the remarkable story of Dr. Ruth Heidrich — a woman who went from a stage 4 cancer diagnosis in 1982 to becoming an Ironman athlete, marathon runner, author, PhD in nutrition and exercise science, and one of the most inspiring examples of a second chapter in health history.

Ruth Heidrich did not simply accept the first version of her future. She sought another medical perspective, worked with Dr. John McDougall, radically changed her diet, continued training, and rebuilt her life around whole plant foods, movement, discipline, and purpose.

This video explores the Ruth Heidrich story with care, honesty, and medical perspective.

WHAT YOU’LL LEARN:

👉 Who Ruth Heidrich was before cancer
👉 How Ruth Heidrich received her stage 4 breast cancer diagnosis
👉 Why the diagnosis shocked her as a marathon runner
👉 How Ruth Heidrich connected with Dr. John McDougall
👉 Why she adopted a whole-food plant-based diet
👉 How she became an Ironman finisher after cancer
👉 Why Ruth Heidrich’s story is inspiring but not a medical guarantee
👉 What we can learn from her second chapter

RUTH HEIDRICH’S INCREDIBLE ACHIEVEMENTS:

👉 Stage 4 breast cancer survivor
👉 First known vegan to complete the Kona Ironman Triathlon
👉 6-time Ironman finisher
👉 67-time marathon finisher
👉 Boston, New York, and Moscow Marathon runner
👉 8 gold medals at the U.S. Senior Olympics
👉 More than 900 trophies
👉 PhD in nutrition and exercise science
👉 Author of A Race for Life
👉 Featured in Forks Over Knives

IMPORTANT MEDICAL CONTEXT:

Ruth Heidrich’s story is powerful, but it is one person’s experience. It does not prove that diet alone cures stage 4 cancer, and no one should refuse chemotherapy, radiation, surgery, hormone therapy, or oncology care based on one story.

The real lesson from Ruth Heidrich is not to reject medicine. The lesson is to ask better questions, seek informed medical guidance, support the body with evidence-based lifestyle changes, and never let a diagnosis become the end of the story.