Melatonin has been labeled ‘The darkness hormone’

“Do you think melatonin is of any value?” a doctor recently asked me. So if a doctor is wondering about this natural remedy, there must be many patients who are asking the same question. So what do we know about it?

Melatonin has been labeled ‘the darkness hormone’ because it’s produced at night in contrast to Vitamin D, ‘the sunshine hormone’, that’s manufactured during sunlight hours.

Melatonin is found in some plants such as bananas, cherries and grapes. A report in the Journal of Medicinal Food showed that tart cherry juice, compared to a placebo drink, helped some older people sleep better.

But it required 16 ounces a day, (the equivalent of 100 cherries) to have this modest effect. It also added 250 calories to daily intake.

Melatonin is linked to our biological time-clock which decides what hormones are released at what times during the day. Studies show that levels of melatonin decrease with age, about 10% percent each decade. So by age 50 the production of melatonin has declined by one half and at 80 it’s one third of what it was at age 20. Some authorities believe this is why the elderly suffer from insomnia and why it’s prudent to use a melatonin supplement.

In recent years melatonin has been touted as a way to treat or prevent everything from headaches, depression, fatigue, irritable bowel syndrome and anxiety. In fact, some have suggested it can even cure menopausal symptoms and be of help to those with heart problems and cancer.

But according to a report from the University of California, there’s no evidence that melatonin should be used for these problems.

Dr. John Alevizos, a California physician, with an interest in insomnia, reports this interesting observation about the deep sleep produced by melatonin. He says deep sleep can trigger vivid dreams. But if it’s causing nightmares he says it’s best to stop melatonin.

Sleeping pills can provide a good night’s sleep and make you feel great the next day, but also give you an old-fashioned hangover. Melatonin can also have this two-edged effect and no one knows whether prolonged use of melatonin suppresses the body’s normal ability to manufacture it.

Research studies have also linked the use of melatonin to high blood sugar, breast swelling in men, decreased sperm count, gastrointestinal inflammation, sleep walking and vertigo.

So how safe is melatonin? A review by the Cochrane Collaboration which evaluates medical treatments concluded that melatonin is effective for preventing or reducing jet lag and recommended it for adult travelers flying across five or more time zones, particularly for those travelling in an eastward direction.

The National Standard which also reviews complimentary and alternative treatments found some good for its use in treating insomnia in the elderly and for helping sleep in healthy people. But for all the other supposed benefits the evidence was inconclusive or conflicting.

Another report from the University of California and the Mayo Clinic agrees that melatonin is safe for short periods of time and may be useful for treating insomnia in the elderly.

But it’s not just people who fly across time zones who cannot sleep. Studies show that 45% of the population suffers from this problem which has been linked to increased risk of heart attack, stroke, increased blood sugar, a craving for food and a less effective immune system. So it’s medically important to get your sleep.

For flights, the dose varies from 0.5 to 10 milligrams (mgs). But since we all have different reactions to medication it is always prudent to ask your doctor about the best dose for you. You can also get sound advice by discussing this problem with your local Health Food Store.

To me, one thing is certain. There are several prescription drugs for insomnia.

But it makes more sense to try a natural remedy first. They have been tested

by tincture of time and safer than prescription drugs.

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