Why is weight loss considered faux pas for pregnant women?

It's not healthy to lose weigh while pregnant. When you're on a diet, you're restricting the amount of food intake and may be restricting some of the nutrients your baby needs because you're eating less. During pregnancy, you shouldn't try to lose weight but should rather keep it under control. Try to eat smaller, healthier meals and exercise moderately for 30 minutes a day [walking and swimming are perfect exercises for pregnant women].