Can Reducing Weight Will Get Rid Of Dark Spots On Neck And Breast?

hi Doctor, i'm 21 years old girl. my height is 178cm and my weight is 95kg. my neck area, armpit, inner thighs and area below my breast are very dark. when i googled about it i came to know that it is "acanthosis nigricans". now i have started to take steps for reducing my weight by going for aerobics, walking, dieting. i want to know if i reduce my weight i will be able to get rid off this dark spots and my skin will become normal like before or should i consult a skin doctor?