Episode

15 Dec 2025 · 31 min

0:00

Podcast episode (JJ Virgin Lifestyle Show) featuring Dr. Sylvia Tara (author of The Secret Life of Fat). Dr. Tara—PhD biochemist (UC San Diego) with an MBA (Wharton)—describes five years of research into fat and argues fat is an active organ that secretes hormones (leptin, adiponectin) which regulate appetite, metabolism and fat distribution. Key topics: fat’s role in appetite and weight regain (leptin), differences between women and men (women store fat more efficiently and show higher ghrelin responses to exercise), visceral vs subcutaneous fat health risks, aging-related hormonal decline and increased fat, individualized approaches to diet (food journaling, timing of eating), practical fasting windows (12–14 hour overnight fasts) and realistic body-fat targets (~25–30% for women). Episode also includes sponsor reads, listener question on intermittent fasting, and host actionable tips (keep a food log, personalize diet, monitor feeding window).

Questions this episode answers

October 4, 2017.

About two to three times the rate men do.

Women have about 33% higher ghrelin levels after exercise and about 25% higher ghrelin levels than men after eating (lasting ~a day).

Approximately 25–30% body fat for women.

They may need to eat about 22% fewer calories than someone who was never heavy at that weight.

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