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Can type 2 diabetes cause weight gain?

Insulin resistance, which is a hallmark of type 2 diabetes, may also lead to weight gain. When the pancreas produces more insulin in response to insulin resistance, the hormone signals the muscles and liver to store blood sugar. After the muscles and liver are full, the liver sends excess blood sugar to fat cells for storage. This can also lead to weight gain.

Can type 2 diabetes cause weight loss?

As a consequence of insulin resistance, the pancreas produces more insulin to overcome the resistance. Eventually, the pancreas is unable to make enough insulin to get a sufficient amount of sugar into the cells. This causes blood sugar levels to rise.  Since the cells cannot get the energy they need from glucose, the body breaks down fat to use for energy instead. This can result in weight loss.