[header] How to increase your leptin sensitivity [title] Limit your fructose consumption. [step] Fructose inhibits your leptin receptors and makes you less sensitive to the leptin in your system. You may have plenty of leptin in your body, but if it can't be picked up and identified, it won't do you any good. 
So cut out the fructose-namely, high fructose corn syrup-to let your body do its job. [substeps] Many processed foods contain fructose.