Humans evolved a robust inflammatory response to fight constant threats like infections. In today's relatively sterile world, this powerful system lacks its historical targets and can overreact to modern triggers, leading to the chronic low-level inflammation that is at the heart of many modern diseases.

Wild wolves rarely get cancer, while it's the leading killer of domestic dogs. This stark difference highlights the impact of modern lifestyles—processed foods, inactivity, and chronic stress—on mitochondrial health, making dogs a compelling parallel for the metabolic theory of cancer in humans.

The physical difference between wild and captive animals of the same species is stark. A wild anaconda is like a 'steel cable' while a captive one is soft; a free-range chicken is lean and 'cord-like'. This demonstrates that an organism's physical composition is a direct, literal reflection of its daily actions and environment.

Many of today's health and behavioral problems are caused by the "mismatch hypothesis." Our brains evolved for a world of scarcity and danger, which is maladaptive in our current environment of abundance and relative safety, leading to issues like obesity and anxiety.

Our ancestors were healthy by default because their environment promoted it. Today, the default environment—filled with processed foods, sedentary lifestyles, and novel chemicals—systematically produces unhealthy people, making good health an uphill battle of individual effort against the system.

The rise of diseases like ADHD, fatty liver, and depression since the 1980s is not just due to toxins but coincides with a major lifestyle shift indoors, driven by computers, air conditioning, and sunscreen. This deprived humans of essential biological inputs from the sun, leading to systemic health issues.

A physician was forced to add "environment" as a third pillar of health after a patient, who perfectly managed her diet and exercise, remained ill due to significant environmental exposures. This challenges the conventional two-pillar model of health.

The push for energy-efficient LEDs came at a biological cost. These bulbs save energy by omitting parts of the light spectrum, like infrared, present in natural sunlight. This results in an unnatural, blue-heavy light that fails to provide the full-spectrum signals our bodies need to regulate circadian rhythms.

Mice living under standard LED lighting develop significant health problems, including fatty livers, smaller kidneys and hearts, unbalanced blood glucose, and anxiety-like behaviors. This suggests the unbalanced light spectrum in modern indoor environments may have profound, detrimental systemic effects on mammalian health.