Lobster is very nutritious and healthy for you in moderation but eating too much lobster may increase your weight but you'd have to eat a lot of lobster to put on the lbs.
Lobster has a good nutritional value and contains proteins, copper, selenium, and vitamin B12 as well as phosphorous.
A 31/2-oz (100 g) serving of lobster contains around 98 calories, 21 g of protein, and 72 mg of cholesterol which is good for people who suffer from high cholesterol as long as they eat it in moderation and don't overdo it.
Any food when eaten too much can be a bad thing but lobster as long as it's eaten in moderation is good for you.
I would not be able to afford lobster too much anyway because lobster is pretty expensive but it's good food and I love eating lobster as often as I can.