I am overweight and have dark marks in my stomach rolls in between my legs and armpits. what can i do to reduce this? after & while losing weight? tia

Control Weight: The dark skin areas may be something called acanthosis nigricans; this can be associated with poorly controlled diabetes, but may have several other sources. Being overweight is a risk factor for blood sugar problems like diabetes. When the blood sugar is normalized it may go away. See your physician, as there are many other causes of this condition, and it should be checked.

Acanthosis nigricans: These skin markings are the result of high Insulin levels which contribute to making the top layer of skin dark, thick, and brown. Skin tags are also often seen. Acanthosis nigricans usually lightens up with weight loss, as Insulin sensitivity improves. No medication really helps much. The creams prescribed often just irritate the skin. The skin tags would have to be removed surgically.