Most Indians offer something at holy places as a form of respect and getting some luck. So most of the times they offer coins and this lead to throwing coins in rivers, which are considered as sacred and holy.
But there is a scientific reason connected to this ritual. In the ancient times, coins were only made of copper. It is scientifically proven that copper traces in water are very healthy when consumed by humans. Even when water is stored in copper vessels, the benefits of that water increase a lot. This was used by our fore-fathers as they started the tradition of throwing the copper coins in rivers. As the rivers were the only source of drinking water in those times, the coins provided with adequate amounts of copper in the water. As this tradition symbolised the luck factor, making it a custom ensured that all of us followed the good practice.
It is also mentioned in Ayurveda that storing water in copper pots eliminates impurities and makes it healthier for drinking. It kills bacteria very effectively and prevents water borne diseases. Ayurveda also states that copper water has the positive charge in it that balances the three doshas in our body (vata, kapha and pitta). The copper slowly leeches into the water and lends it all its positive properties and this water can be stored this way for a very long time.
It also helps stimulate the brain. Copper helps in synthesising certain chemicals that are responsible for the transmission of impulses in the brain. This helps makes you smarter and also prevents seizures. Another health benefit is that it helps regulate the working of the thyroid gland. Copper deficiency is sighted as the cause for thyroid related problems such as hyperthyroidism and hypothyroidism. Copper is required for the thyroid gland to function optimally.
Another disease that copper can help fight is cancer. The strong antioxidant properties of copper fight against the free radicals and negate their ill effects. These anti cancer properties make copper water even more valuable and effective in the daily lives of people.
It also aids in the process of weight loss by fine tuning the digestive system to perform better and helping the body break down fat and eliminate it more effectively. It helps detox and cleanse the stomach by killing bacteria and reducing inflammation.
The scientific and health benefits far outweigh the “Luck” factor that this tradition has, and should be taken into consideration the next time you see someone throw a coin into a river or pond.