I'm replying to you so that anyone thinking keto is a good idea from your comment will research first.

Ketogenic diets are built to imitate starvation, and are used in extreme cases of epilepsy to help prevent seizures. They are NOT good quick fix diets if you are overweight. They are not good diets period, and will make you very sick, especially doing it long term.

Both Keto diets and Paleo diets are recent fads that are very nervewracking for me. Your body NEEDS carbohydrates. Energy comes from complex carbohydrates, and helps your body keep moving every day. Yes, a high amount of carbs is very bad for you, and it comes in all sorts of forms- breads and cereals are of course the most common. The problem with these diets isn't just cutting out carbs completely, but also the encouragement to eat as much meat as you like; often this is red meat. Red meat, aside from junk food, is the WORST THING YOU CAN EAT, especially when you are eating too much of it. Fish is far better for you, but even that, with the rising levels of mercury can be bad. Protein can be obtained not just through meat, but through beans, chickpeas, soy meats as well. Just because you aren't vegetarian doesn't mean you can't use commonly used protein subs in veg diets for your own protein.

Instead of cutting it out completely, you need to balance your diet and eat portion controlled meals. No, it isn't that easy. You might be of the lucky pool of genetics that working out isn't necessary, but in order to stay at a healthy weight AND in shape, exercising is key. Without a healthy, balanced diet and exercise, you'll end up just gaining all the weight back as soon as you stray from your diet. If you're eating a balanced diet, and exercising.... having pizza once in awhile isn't going to kill you, or pie, or cake. It's about moderation.

Please don't give me bullshit (pardon the language) about portion control being an ignorant mindset. Portion control is what is used to help people from 600 pounds drop weight till they are healthy. That's what stomach stapling is. Portion control IS however, a choice you make for YOURSELF. Like any other personal choice, nobody can convince you that you want to be healthy, or that you want to lose weight. I made the choice for myself after years of hovering around the 220 pound line (for reference, I am a 5'4" woman), that I had to take it into my own hands. I cut out sweets, chips, and soda, except for a small treat on the weekend (that right there is called moderation), and not even every weekend. My family tends to order out every week, but I have changed my style to once a month, unless it's a flatbread sandwich from subway. I started cooking more meals myself, and experimenting with foods, to keep me away from the amount of bread I was eating. I'll note here that I am vegetarian, and my problem in a big way was replacing meat with bread. I've changed that and replaced meat with soy substitutes and veggies/legumes that have a good amount of protein in them instead.

I've seen people drop pounds like flies in ketogenic diets, however they're not doing it because they are healthy. They are doing it because they are sick. Once the fad goes past, or once they get sick enough that they have to stop, they are going to gain all that weight back by stepping out of the diet. As I told my friend; If you have to test your urine to make sure you're doing it right, you're doing it wrong already.

So, TL;DR; Keto mimics starvation and is used as an extreme treatment for epilepsy, it is not healthy. The only way to lose weight and keep it off (while remaining fit and healthy) is to live a healthy life style with a balanced diet (veg or non veg, it's possible), and exercise every day. Doesn't have to be a lot, a little bit on a treadmill, weights, or even crunches, jumpingjacks, etc... Otherwise once your fad diet blows over or you get too sick to continue, you'll be in the same spot. Consult a dietitian if you are not sure about what you should be eating, and if you're interested in becoming vegetarian, be aware of how to get your protein and iron from non-meat sources.