"Extreme dieting" refers to a very strict and often harmful way of eating, where a person drastically reduces their calorie intake or eliminates entire food groups in order to lose weight quickly. Full definition
Despite last 4 days being as laid as can be, this week - long plan is still considered a crash, fad diet with characteristics of extreme dieting. (fitwirr.com)
Your hormones are made from the food you eat, so your low estrogen is likely due to vitamin and nutrient deficiencies from improper and extreme dieting as well as from adrenal burnout. (parsleyhealth.com)
The drop of thyroid hormones can be triggered by extreme dieting. (fitnessandpower.com)