# Good morning, Arizona Vitality Clinics

> Arizona Vitality Clinics follows DSIP from a small insomnia experiment into the following day, sleep recordings and hormone findings.

**Sleep and the following day**

Vitality, to me, has room for an unhurried morning. The DSIP papers bring the night into that picture, along with some inconvenient results.

## A small insomnia experiment

In a study of six middle-aged people with chronic insomnia, intravenous synthetic DSIP was associated with [longer sleep, fewer interruptions and no daytime sedation](https://pubmed.ncbi.nlm.nih.gov/7028502/). Those waking hours persuaded me to read on. A sleep experiment had followed its subjects back into daylight.

DSIP stands for delta sleep-inducing peptide. Even its full name directs attention toward the night; the person who has to get up afterward interests me more. An account of vitality ought to have something to say about that ordinary transition.

Six people give the question a foothold. They leave plenty of room for doubt. The reported absence of sedation deserves attention at that modest size: an observation in these participants, after this experiment.

## What would a better morning contain?

Feeling clear, sustaining attention and enjoying the day are ambitions I can understand. The [findings in this small insomnia study](https://pubmed.ncbi.nlm.nih.gov/7028502/) establish no such complete bundle. Turning the absence of sedation into a claim about sharper thinking would add a result the paper has not supplied here.

A persuasive experiment would, in my estimation, follow through: ask how people felt, examine what they could do, and give the waking hours as much attention as the night. A small study reporting no daytime sedation also leaves the safety of repeated exposure unresolved.

Arizona suggests bright walls and deep shade to me. I like the shade as an image for vitality: somewhere to recover enough attention for the day. The papers, however, have to earn every connection between that image and a biological result.

## The sleep claim accumulated problems

The later [review of DSIP's unresolved biology](https://pubmed.ncbi.nlm.nih.gov/16539679/) is considerably less encouraging. Its authors judged the sleep-promoting evidence weak and described the continuing absence of an identified DSIP gene or receptor. Altered versions of the molecule had produced clearer sleep effects than native DSIP.

DSIP's full name had lulled me into expecting a fairly direct account of sleep. Instead, the record contains a promising little human observation alongside a basic biological argument that remained unsettled. I hesitate to promote DSIP into an answer to tiredness on that basis. It also makes the papers much more interesting.

## Further into the research

[Sleep recordings](/sleep-recordings) return to the original rabbit finding and a later rabbit experiment that gives native DSIP a less comfortable reception.

[The sleep–wake boundary](/body-clock) contains the strangest result here: [DSIP-like material in human plasma fell as sleep began](https://pubmed.ncbi.nlm.nih.gov/8745061/).

[Stress signals](/stress-signals) follow ACTH, cortisol and a set of animal experiments. Their separate results resist being folded into a general feeling of calm.

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At Arizona Vitality Clinics I pore over published research on sleep and waking; the site is an essay collection, not a business, and offers no medical advice.