A coffee percolator is a type of pot used to brew coffee by continually cycling the boiling or nearly-boiling brew through the grounds using gravity until the required strength is reached. There are stove-top percolators and standalone units which contain a built-in heating element. Percolators were popular until the 1970s, when they were widely replaced by drip coffee makers. By the mid-1970s, many companies ceased production of percolators.[citation needed]


Women who drank more than 4 cups of coffee per day, had a 20 per cent lower risk of becoming depressed. The reason being the caffeine, a natural stimulant which stimulates the central nervous system and increases dopamine levels [18] . An increase in dopamine levels removes the symptoms of depression and anxiety [19] . And due to this people are less likely to commit suicide[20] .

Drinking more coffee is linked to a lower risk of depression, according to a review of 26 studies published in Australian & New Zealand Journal of Psychiatry in 2016. For each cup of coffee consumed per day, the risk of depression decreased by 8 percent, the researchers found. However, it's worth noting that too much caffeine can cause problems in people who also suffer from anxiety, negating any beneficial effects the coffee can have on depression risk.
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