Hi there.
Have you experienced recent significant weight loss even though you say you are overweight ?
Any change in your bowel habits recently, like alternating
constipation and diarrhea often ?
Usually bright red
blood in stool can be due to variety of factors like hemorrhoids,
anal fissure which will be associated with pain on defecation,
inflammatory bowel disease, possible cancer of colon considering age factor, bleeding disturbances etc.
It is advisable to have a diet rich in fresh fruits and green leafy vegetables. Stay away from red meat, excess
carbohydrate food, fatty food, junk food, colas etc. Drink enough water. Sleep 6-8 hours a day. Do daily brisk walking exercise for 40 minutes a day. This will help to maintain good health, proper weight, better energy levels.
Since you have light-headedness, it is possible you may be anemic or low blood in your body due to the bleeding.. It is wise to consult your Doctor and get a thorough checkup and also blood work done to find out if you are anemic. Also keep your thyroid levels in check.
Kindly report further for follow up.
I hope I have answered your query.
Regards,