When it comes to speaking to your loved one, try to stay relaxed and calm. This is often easier said than done! But it is important that you try to remain calm, and if you feel the situation is becoming heated, suggest you all take ten minutes to calm down, and then resume your conversation. Your loved one may not want to hear what you have to say or may react with anger or defensiveness.
They might laugh off your worries, or come up with reasons and excuses to explain it all, making you doubt yourself and your concerns. Stay strong and follow your instincts. If you think there is something wrong, there usually is.
Remember that denial is a main feature of eating disorders, and people suffering are often scared of others discovering their secret as they feel ashamed, or they may feel scared that others will try to make them stop.