I'm 45 -- about 2 years ago, I noticed that my erections were going soft. During hours of kissing with my new girlfriend at the time, my erection had been rock hard undef my jeans, but when we took it into the bedroom, while inside her, my penis lost it's hardness. At first, I thought this was due to her inexperience, and her inability to keep me stimulated. The relationship didn't last and I found myself with a new girl. While I with her, in the middle of very hot sex, my erection became soft on more than one occasion. I realized I had a problem. The only thing I can think of that preceded the softening erections was the fact that I had lost 30 pounds over the 6 month period prior on a modified Atkins diet. As you know, the Atkins diet is a mostly carb-free, heavy protein (and fat) diet. I mention this because a side effect of going on this diet was that my cholesterol sky-rocketed. It was so high my doctor wanted to put me on Lipitor. I refused, went on a low-fat!
diet, and have now brought my cholesterol to way below average. Despite the change in my cholesterol, erections are still soft and disappointing. My brother, who is 2 years older than me also has erectile dysfunction. Both of our parents have varicose veins -- our dad in particular has legs that are in places nearly blue from all the visible capillaries. I also have some varicose veins on my legs, though absolutely nothing to the degree either of my parents have. Anyway, V-gra has proven very helpful (at the right dose), but it bothers me that I have to take a pill. Is there anything I can do that will permanently restore things to the way it used to be? I'm a single guy and I can tell you that women do not dig a guy who can't get hard. One last thing -- for the two years or so before I noticed I had a problem, I used to rent porns and masterbate sometimes ten times over a one or two day period. Then I might go for days, or a full week without masterbating. Did I !
hurt myself doing this? I never had any pain or the sense that I had "broken" something. Also, finally, I had a cold over the last few weeks and took a lot of products with zinc. Lately, I've been very horny. Is it the zinc? 

Dr. Lin: 12/28/2001> 
Your diet has over-stimulated your liver function for production of cholesterol instead of enzymes that convert amino acids into neurotransmitters and cholesterol into hormones. That is, your diet had damaged your liver. Like any drugs or medicines, if you are on high dose for a long time, they will damage your liver, unless the product is armed with liver detoxification ingredients. Now, you are on the other extreme - the low-fat diet which contains a little amino acids and B-Complex to support your liver functions and neuro-endocrine functions. So, you have mixed up your body one way or another. You should have a well-balanced diet. How about taking an average of your low-fat and Atkins diets?  Instead of eating a lot of fat, you should eat a lot of protein (30%), and fresh vegetables and fruits (60%), and some Carbon-Hydrate Products (10%). You don't need cholesterol drugs either, which block the liver function for normal cholesterol production. Cholesterol is essential for hormone production, but it must be fully converted into hormones by liver enzymes. Protein must be decomposed into amino acids which then are converted into neurochemicals by another group of liver enzymes. So, the problem is your liver function.
Over-masturbation has also killed your brain's and neuro-endocrine functions.
Your ejaculation volume becomes less and less, and watery. 
Zinc,Vitamin A, neurochemicals, and DHEA are essential for testicular and prostate functions and seminal productions. That is why over-ejaculation or excessive orgasm causes brain's/nervous/visual/auditory disorders, prostate dama
Your "eat nothing but pasta, pizza and hamburgers" destroys your liver function and black out the negative feedback control loop of the brain (hypothalamus/pituitary)-testicular axis in the endocrine system. Your diet is the so-called "high-protein diet" for weight loss, which turns your blood so acidic that you lose your weight and bone.
The foods you eat is L-Lysine rich. You must eat L-Arginine-rich foods such as seeds, nuts, raisins and grains, and the neutralized foods such as vegetables and fruits. Please balance your diet. 
Let's throw red meats out of our dishes. Don't even mention 1/4-lb hamburgers. If you want to have hamburgers, you can make it from soybeans or mix meats with soybeans.

Now, it is the time to have a how-to-do-yourself lecture for soybeans diets - soybean milk and burger - my "POOR" good old-days' recipe:

1. Preparing soybeans-
Get dry soybeans from a grocery store.
Soak 3 cups of soybean into water in a big container for 8-12 hours, and change water two or three times during the soaking period.

2. Grinding soybeans-
After soaking, drain the water out.
Put 3 cups of soybeans and 4 cups of water into a blender (3:4 ratio is the best); if your blender is too small, adjust the quantity accordingly.
Grind soybeans with two speeds: blend for 3 minutes and liquefy for 3-5 minutes.
Use a juicer to separate soybean milk from powdery (wet) solid, and store the milk in a clean container.
(You can use a cloth bag as a strainer to separate the milk and solid - the good old days' method.)
Remove the bubbles from the milk, that will produce gas in your digestion system.

3. Cooking soybean milk-
Fill a cooking container halfway with the milk.
The best way to cook the milk is: use a rice cooker; cook it for 30 minutes.
If you use a surface oven to cook it, you must Use a mild fire to cook the soybean milk slowly to prevent formation of bubbles that could over-flow your cooking container.
Soybean milk contains a lot of natural plant hormone. It is very easy to produce bubbles when you heat it up!

4. Storing soybean milk-
You can sweeten the milk, or store it as it is after cooling down.
Store the milk in a clean container; you can use one-gallon water bottle to store it in your refrigerator.
Don't use the juice or soda bottles to store it because the milk will react with the juice or soda chemicals.
Sweetened milk can last up to 6 days but the plain milk must be re-boiled in 4 days.

5. How to serve soybean milk-
You can have it any times you want.
You can re-boil soybean milk and add a blended egg into it.
You can add vinegar and salt into the plain milk to make the tofu "flower" soup for your breakfast.

6. How to make soybean burgers-
Mix the powdery soybean solid with salt, onion, and pepper, (or meat).
Make soybean burger buns as you do for your hamburgers.
Fry the buns in an oil pan until they are completely cooked.