Rule of three | Wikipedia
Ray was into linguistics, likely preventing him from overusing this triad pattern. Yet, you can still find it in many of his titles, making them appear well-rounded and memorable.
Adaptive substance, creative regeneration: Mainstream science, repression, and creativity
Aging Eyes, Infant Eyes, and Excitable Tissues
Aging, estrogen, and progesterone
Aspirin, brain and cancer
Bleeding, clotting, cancer
Diabetes, scleroderma, oils and hormones
Estrogen, memory and heredity: Imprinting and the stress response
Estrogen, progesterone, and cancer: Conflicts of interest in regulation and product promotion
Fatigue, aging, and recuperation
Gelatin, stress, longevity
Genes, Carbon Dioxide and Adaptation
Glycemia, starch, and sugar in context
Growth hormone: Hormone of Stress, Aging, and Death?
Hot flashes, energy, and aging
How do you know? Students, patients, and discovery
Lactate vs. CO2 in wounds, sickness, and aging; the other approach to cancer
Leakiness, aging, and cancer
Meat physiology, stress, and degenerative physiology
Membranes, plasma membranes, and surfaces
Milk in context: allergies, ecology, and some myths
Osteoporosis, harmful calcification, and nerve/muscle malfunctions
Phosphate, activation, and aging
Rosacea, inflammation, and aging: The inefficiency of stress
Serotonin, depression, and aggression: The problem of brain energy
Serotonin: Effects in disease, aging and inflammation
Stem cells, cell culture, and culture: Issues in regeneration
Thyroid, insomnia, and the insanities: Commonalities in disease
Thyroid: Therapies, Confusion, and Fraud
Tryptophan, serotonin, and aging
Vitamin E: Estrogen antagonist, energy promoter, and anti-inflammatory
It's one of the reasons why the "perceive, feel, think, and act" gained acceptance and popularized.