I need the symptoms or signs, treatments, causes and effects for Diabetes, Alzheimer’s, Arthritis, Heart Disease and Obesity, It’s for an important essay, please help me!!! I need this help!

My dog has low thyroid and I was just wondering what he felt. The vet was amazed at the results of several blood tests, because he didn’t exhibit the typical signs of lethargy and obesity.

My symptoms:Fatty liver disease, LQT and ?ischemia, wheat/diary/egg/yeast/tomato allergies, fatigue, obesity, navil hernia, sleep apnea, high BP, vaginal itch, sleep problems, eczema on head, ears ?infection all the time, lump in left arm pit and left vagina, aches esp knees and back, breathing difficulties, thinning hair, bloated, wake up worse in morning, falling asleep at 4pm cant drive then, dizzy, poor short term memory, depression after anxiety, pins and needles in both hands and right leg/foot when asleep chest pains and shortage of breath.What do I have?

or do you think it has more to do with willpower?

Im just curious as to how everyone views it.
im obese by the way and im pretty happy with myself. thats why im asking how other people view it.

I am 14 and fill most of the symptoms, except obesity. I want to go for a blood test but my mum said I am being silly and the symptoms are vague. Help?