Male. age 71. Had pneumonia Dec 2015, put on pretisone, bronchitis april 2016. 3 weeks in hospital. Took pretisone till may 2016. Gained 17 lbs. Dr said I would loose it in time. Aug till nov 2016 took biotrust product to loose belly fat, didnt loose an ounce. Jan 10, 2017 took other product for belly fat, no luck so far. Mild constipation. Took biotrust product for 90 days. Any ideas why I can not loose my belly fat?