I see bums.
On warm evenings in Los Angeles, when the breeze is still, a specific, sharp scent can be detected. It is the smell of acetone—a fruity, chemical odor that signals a body burning its own fat for fuel. Everybody knows it is a symptom of alcoholism, a grim indicator of a body in decline. Today, the physiological process has been packaged. It is the "success breath" of a booming medical industry, a scent worn by the affluent as a badge of metabolic control. The chemistry is identical. It is a body in ketosis.
The divergence is not biological; it is economic.
Walk through any major American city, and a pattern emerges that defies the stereotypes of poverty. Notice, the homeless fringe is almost never obese. If you see someone who is overweight on the streets, they are likely new to the situation, their body still holding onto the reserves of a life before the crash.
Why is this? Is it a moral failure? A lack of willpower?
The answer is a cold, hard calculation of survival economics. When a person is destitute, every dollar begged or scavenged is a choice between immediate intoxication and sustenance. Alcohol and drugs offer a temporary escape from the crushing reality of the streets, a chemical sedation that silences the nagging of hunger and terror of the future. But the street cure come at a cost: The total depletion of the body's resources.
When money is spent on a bottle of Thunderbird or a fix, it is not being spent on protein, vegetables, or calories that build muscle and maintain tissue. The result is a state of chronic, accelerated catabolism. The body, starved of nutrients but flooded with toxins, is forced to consume itself. It burns fat, then muscle, then organ tissue. The homeless individual doesn’t stay fat because they cannot afford the luxury of excess. They stay thin because the only appetite remaining is for the very thing that accelerates their own self-consumption.
Ketosis is a physical state, but its manifestation is dictated by the wallet. It is a choice between:
1. Voluntary Ketosis (The Cure)
For the affluent, ketosis is a carefully engineered metabolic state. It is achieved through a prescription, a specific diet, and the support of medical professionals. The body burns fat, but the process is monitored. The "acetone breath" is masked with mints. The muscle loss is mitigated by protein shakes and resistance training. The "cure" is a $900-a-month transaction that turns a biological crisis into a lifestyle choice. The body is not just burning fat; it is being sculpted.
2. Involuntary Ketosis (The Harm)
For the homeless, ketosis is a desperate survival mechanism. It is not a choice; it is a starvation response. The body burns fat because there is no food. It burns muscle because there is no protein. The "acetone breath" is not masked; it is the smell of a body eating itself alive. The "cure" is a sign on a building that leads to a cemetery. The process is unchecked, un-monitored, and fatal.
The difference is not in the chemistry. It is in the resources.
We must ask ourselves: Is it because any money begged is spent on alcohol and drugs, leaving nothing for nutrition? The answer is yes, but it leads to an inconvenient truth, that “throwing money at the problem” will not solve it. It is not just that the money is spent on alcohol and drugs; it is that these substances replace the need for food in the short term, creating a false sense of satiety while the body slowly wastes away. The alcohol suppresses the appetite, the drugs dull the pain, but the body is still starving. The result is a metabolic state that looks like a crash diet, but is actually a slow, but painless, wasting-away.
As the "cure" for the affluent is a medical intervention that preserves the body, so the "cure" for the destitute is a poison that destroys the body.
We often frame homelessness as a social problem, a failure of housing policy or mental health services. While these are critical issues, the physical reality of the body tells a different story. The emaciated figure on the street is not a victim of a "bad diet"; they are caught in a loop that forces them to choose between immediate relief and long-term survival. It is a reflex arc seen in the reality that for the wealthy, ketosis is a tool for control, while for the poor, it is loss of control.
The question is not why the homeless are not fat. The question is why we allow a system where the only way to achieve a "ketogenic" state is to starve yourself to death. The breath is the same. To one it means “It's working,” while to the other it is a death rattle.
We must stop viewing ketosis as a social trend or a medical miracle. It is a fundamental biological process that reveals the stark inequality of our world. The cure is not a shot of gin or a shot in the belly; it is the ability to choose to eat—to control what we eat—to breathe (or not), and to live without the constant fear of doing without.