For women, an unhealthy body fat percentage is generally considered to be above 30%. Percentages in the range of 20-30% are often viewed as acceptable, while values below 20% may indicate underfat conditions. Excess body fat, particularly around the abdomen, is associated with various health risks and can lead to conditions such as diabetes and heart disease. Therefore, it's important for women to maintain a body fat percentage that supports overall health and reduces risk factors related to obesity.