RBI also exercises a system of capital controls in addition to through active trading in currency markets. What is important to note is How the Indian rupee devalued since till date and during which Prime-minister rule what was the highest rate of dollar to INR.
USD-INR Chart (September 2013-September 2018)
According to some studies in rats, it can inhibit a fat producing enzyme called Citrate Lyase, making it more difficult for the body to produce fat out of carbohydrates (1). Other rat studies show increased levels of the neurotransmitter serotonin. This could theoretically lead to reduced appetite and cravings (2).