Obesity is the condition of being grossly overweight. Studies show that obesity is linked to heart disease causing death, even moreso in recent decades.
Do they actually say "grossly overweight"?  That seams a little mean.  I know that obesity is very bad for your health though, that is why I became a vegan.  Is diet the best way to lose weight?
Some use the term "grossly overweight". But it is a condition in which excess body fat has accumulated to the extent that it may have a negative effect on health. A combination of diet and exercise are the best way to lose weight/fat mass, but diet alone is a good method.
That is good to know.  What should I start exercising as well?
It's always a good idea to incorporate exercise into your weekly routine at least 3 times a week for 30-40 minutes a day! It offers many more benefits than weight loss, such as mood improvement and higher energy levels.
I could definitely use some extra energy!
Consider using supplements as well, especially if your diet is not the most nutritious. Black seed oil, flax seed oil, B-12 supplements, and burdock root are all known to help with increasing energy levels.
I do take a B-12 supplement because I don't get it in my diet, but the others I will get this weekend.  Thanks for the tips!