The speaker describes animal groups eating normally and groups receiving about 30% less energy, then discusses lifespan effects in some species. This article reports what the program says; it does not recommend that readers reduce their calorie intake by that amount.
What the video discusses
The video refers to animal experiments on calorie restriction and lifespan. Findings in animals cannot be applied directly as dietary advice for people.
Scope and what to check next
Research on dietary restriction depends on the species, duration and health conditions studied. Advice for people should be checked against systematic reviews and public-health guidance, and discussed with a qualified professional.