Your friend john has just informed you that he has been on a very low carb diet for 2 months and has lost 20ibs. why is john losing weight? what influence do carbs have on metabolism? can there be a negative impact from cutting carbohydrates from your diet?

Why is he losing weight? Rising levels of blood sugar trigger the body to release insulin. Insulin helps glucose enter your body's cells. ... The idea behind the low-carb diet is that decreasing carbs lowers insulin levels, which causes the body to burn stored fat for energy and ultimately leads to weight loss.

Influence on metabolism: Hormonal interactions in carbohydrate metabolism. Insulin is the key hormone of carbohydrate metabolism, it also influences the metabolism of fat and proteins. It lowers blood glucose by increasing glucose transport in muscle and adipose tissue and stimulates the synthesis of glycogen, fat, and protein.

yes there can be a negative impact on your diet: Carbohydrates provide the body with the energy it needs and are a good source of many vitamins and minerals