Two of the most popular dietary supplements used for insomnia are: 1  Melatonin, a hormone produced by the brain. You can also buy it as a supplement. 2  Valerian, an herbal sleep remedy. Valerian appears to be safe, and it may improve sleep when taken for a week or two.
The average spell of clinical depression, if left entirely untreated, will last around 8 months. During a depression, the sufferer will normally be convinced that it will never go away, but this is a classic feature of the way depression makes us think.
A drought can last for months or years, or may be declared after as few as 15 days. It can have a substantial impact on the ecosystem and agriculture of the affected region.Although droughts can persist for several years, even a short, intense drought can cause significant damage and harm to the local economy. drought can last for months or years, or may be declared after as few as 15 days. It can have a substantial impact on the ecosystem and agriculture of the affected region.