I am 27 years old and unmarried, one and half year back white/Grey appeared on my beard and chest, now it has grown a lot around 20%. I stopped shaving and only trimming these days.I have no physical problems, some times I get stress up with my work. I am 5.6' and my weight various between 67 to 70 kgs. My eating habits are normal, I mostly eat rice, corn, vegetables and fruits. Is there a way for me to stop this increase? Thanks in advance.