Britney Spears is turning to special lollipops and asthma inhalers in a desperate bid to lose weight, according to reports. With less than a month to go before the release of her comeback album Blackout, Spears is keen to slim down so she looks her best for promotional appearances. According to Britain's Heat magazine, Spears has taken to sucking special Hoodia lollies, which tricks her brain into thinking she is full; as well as a chemical found in asthma medication. A doctor warns Heat that the lollies could cause mood swings, lower Spears' blood sugar levels and rise her blood pressure and cholesterol levels. Doctor Halle Mir, from Los Angeles' Cedars Sinai Hospital, also warns against the use of an inhaler, saying: "If she's using it as a weight-loss tool, she's probably relying on epinephrine, which could suppress her appetite. She's risking damage to her lungs and heart. She could even bring on asthmatic symptoms."