It has also been used as a term for a hangover, with the sufferer's groans of discomfort being humorously likened to a wailing cat. It may refer to: 1  Worbey & Farrell, previously known as Katzenjammer, a British piano musical comedy duo.  Katzenjammer (band), a Norwegian pop/folk band.
Zinc (Zn) is one of the eight essential micronutrients. It is needed by plants in small amounts, but yet crucial to plant development. In plants, zinc is a key constituent of many enzymes and proteins. It plays an important role in a wide range of processes, such as growth hormone production and internode elongation.
Zinc is an essential dietary mineral. You need zinc for your immune system to function properly and for cell division. Zinc helps enzymes break down food and other nutrients. It also plays an important role in enzymes that build proteins. It can be found in certain foods, but itâs also available in supplements and even certain cold medications. Having a zinc deficiency can lead to low testosterone. Exactly why a lack of zinc impacts testosterone levels isnât fully understood.