 [ Symptoms ] can bad blood circulation cause small penis girth for an adult  to be more specific i am 25 years old quite overweightobese and am slightly below avg in girth since being overweightobese can cause a myriad of health issues regarding bad blood flowcirculation could this cause a lack of blood in the penis leading to a smaller girth would losing weight and improving blood flow increase girth would the gains be noticeable [ Disease ] i here this a great deal at the school i teach at if you really want to gain some weight you need to develop a comprehensive nutrition and exercise plan first keep a food diary for three days are you really eating as much as you think when counseling athletes at school i generally recommend they consume 1 8 2 0 grams of protein a day per kilogram of body weight so for you at 150 lbs = 68 kilograms that would put your protein needs in the range of 122  136 grams a day now that you know what your eating and how much protein you need develop an eating plan here is an example breakfast 1 large egg scrambled 1 cup old fashioned oat with one tablespoon honey 1 banana 1 cup skim milk protein in meal = 20 grams lunch 2 grilled chicken breasts 8 ounces 2 cups of veggies broccoli green beans califlower 1 apple 1 serving greek yogurt protein in meal = 69 grams dinner 1 servings baked pork tenderloin 3 ounces remove all fat 2 cups of veggies 1 banana 12 cup fat free cottage cheese protein in meal = 38 grams snacks 1 apple with 2 tablespoons of peanut butter protein 7 grams 14 cup sunflower seed string cheese fruit protein 12 grams total protein for the day = 147 grams notice there is no junk food chips soft drinks etc or any expensive supplements just good solid nutritional foods regarding exercise the best way to add weight is by adding muscle to do this you need a well thought out strength training plan follow the link pasted below to find a great beginners workout on webmd <link> as you advance you can find some additional info here <link> <link> like i said earlier the key to healthy weight gain is with a comprehensive nutrition and exercise plan both of which you can find here at webmd to be on the safe side be sure to check with your physician before starting