How to tell if weight gain is muscle or fat?

I know how stressful it is to see the number on the scale go up, it used to ruin my entire week. But please remember that muscle is denser than fat. If you feel stronger and more energetic, that gain is likely healthy muscle, so please don't let the scale bring you down.

Honestly, just take progress pictures every week in the same lighting. If you look more toned in the mirror but the weight is the same or slightly more, you are definitely building muscle. The weighing scale doesn't tell the whole story, trust me.

When I was confused about my body composition, I consulted a nutritionist at a proper clinic. They did a body composition analysis (BIA) which showed my exact muscle and fat percentages. It is much better than guessing on your own, so do ask a doctor.

With my thyroid issues, weight gain is usually water retention or fat, which makes me feel sluggish and puffy. If you are gaining weight but feeling energetic and fit, it is probably muscle. Still, regular health checkups help track your body's response properly.