Motorhead's longtime manager Todd Singerman has expressed his concerns for frontman Lemmy's health, insisting the rocker doesn't seem to grasp the concept of a healthier lifestyle as he battles back from a heart scare last year (13). Lemmy was forced to scrap a series of gigs after he was diagnosed with a severe haematoma and underwent heart surgery to have a pacemaker fitted, and as he plans a comeback with a series of gigs in 2014, his manager admits he's worried about the rocker. Singerman reveals Lemmy has cut back on his heavy drinking, but he fears it is not enough. He tells America's Decibel magazine, "He’s been up and down. He’s got a really bad diabetic problem and it changes on a daily basis. "A lot of it is fighting the bad habits, the things he’s not supposed to do any more. He’s stopped smoking, but he probably sneaks Jack (Daniels) and coke (Coca-Cola) here and there. He’d be lying if he said he’d stopped. "He’s been trying to substitute it (bourbon) with wine. That was the compromise with the doctors: 'Trade the Jack for the wine'. He thinks wine’s better than Jack, but it’s still got tons of sugar. He doesn’t tell them he’s drinking two f**king bottles either. These are the battles we’re up against. He doesn’t grasp that he’s just trading one demon for the other. "The bottom line is that he needs to find a balance and then live that balance for a few months. But we can’t find the balance yet. He has great days and then he f**ks it up. And when you f**k up, you go backwards."