January 2025
We are governed by circadian rhythms, which are 24 hour cycles, part of our body’s internal clock. During sleep, the cells in our body undergo healing and replication and our mind works through the experiences and memories of our lives in dreams. Our psyche needs the stimulation of being awake, and being asleep. We need, integrally, a consistent routine for our good health. Our circadian rhythm causes us to sleep and, in the morning, as exposure to light increases, melatonin production stops and body temperature rises, promoting wakefulness. Rhythm is the key. Light and dark, wakefulness and sleep, in harmony and balance giving rise to good bodily and psychological health.
Sleep is most likely to be refreshing and restorative when circadian rhythms, the natural cycle of daylight and darkness, and sleep patterns align. Regularity of meal times, exercise, social interaction, and sleep times as well as exposure to sunlight and darkness help maintain our natural circadian rhythms. Sometimes, though, our circadian rhythms are thrown out of kilter: shift work, travel across time zones, social or study habits that lead to irregular bedtimes, illness, stress, bright lights, too much alcohol and other recreational drugs, all contribute to this.
Problems with sleep can give rise to insomnia, performance issues (memory problems, difficulty focusing and difficulty performing high precision tasks, emotional and social difficulties, accidents and errors, health problems (obesity, diabetes, heart attacks, high blood pressure, and cancer), and symptoms of low energy and grogginess.
A regular schedule for sleep, meals, exercise, exposure to a moderate amount of sunlight and not too much screen time, etc, helps good sleep. If you are having problems getting to sleep, clinical hypnotherapy (which I do) combined with light therapy (controlled exposure to light, eg going outside in the morning after dawn for an hour or so and then at least 10 to 30 minutes in the afternoon of sunlight is beneficial) and, maybe, melatonin supplements and, if your doctor recommends it, medication. The latter can pose risks and have undesirable side effects.
So, melatonin. I’ve been thinking a lot about why melatonin was given to me in ICU when I was seriously ill a few months ago when sleep wasn’t a problem. Melatonin, as we know, is a hormone produced by the pineal gland in the body in response to darkness and regulates day-night/waking-sleeping cycles by chemically causing drowsiness and lowering the body temperature. Melatonin is also implicated in the regulation of mood, learning and memory, immune activity, dreaming, fertility and reproduction. Light decreases melatonin production creating wakefulness, darkness increases melatonin inducing sleep. Sometimes some people do not produce enough melatonin and have insomnia. This is usually and usefully treated with melatonin tablets, drops, patches or gummies. So, why was it given to me in hospital – until I questioned its use and suggested that it really wasn’t necessary for me to take it?
I’ve since discovered that it is quite often given to patients during acute illness within a particular age group as it has been discovered that such illness sometimes interrupts the person’s normal circadian rhythm and creates delirium. Well, this might be true, but to give melatonin to everyone on the basis that sometimes the wakefulness/sleep cycle is interrupted seems a bit of an overkill. At no time was I suffering delirium. Blanket prescriptions cannot include all variables.
I often hear from clients that they have been prescribed melatonin and they’ve been using the stuff for years, without much useful result. This supplement is time-limited. The supplement is designed to reset the circadian cycle not to replace it. As a short-term solution to insomnia, it’s useful, but it loses its effectiveness and can contribute to the body not restoring its own circadian rhythm (which is the whole point of taking it in the first place).
Melatonin is not innocuous and shouldn’t be used if you operate heavy machinery, nor
taken with alcohol or other sleeping pills as the combined effects may cause breathing problems. Melatonin supplements interact with many medications, including birth control pills, blood pressure medicine, antiseizure medicine, medicine to weaken the immune system, and blood thinners. People who take any of these medicines should speak to their doctor before trying melatonin supplements.