With regards to male fertility, till what age can a man have healthy sperm?

Until he's dead. Men produce sperm from age until death. Quality and quantity may decline, but keep coming unless there is damage to the testicles, either through injury or disease.

Related Questions

At around what age does male fertility and sperm count begin to decline drastically? I look young.

Never. There is no drastic decline in fertility in men but there is a gradual decline in sperm quality and semen volume after age 50. Read more...
No particular age. With age, the semen analysis shows slow changes in semen volume, count and motility. The only "drastic" change occurs during andropause in the 70s and 80s when the sperm count disappears forever. Read more...

When does male fertility and sperm count begin to decline drastically?

It doesn't . Men can be fertile well into old age. Over 50, there may start to be a gradual decline but no drastic decline. Read more...

I want to increase mainly male fertility through food items. I have a low sperm count. What is suggested?

Male fertility. A healthy diet and a healthy weight go a long way for male fertility. Limiting or avoiding alcohol and tobacco products also helps. Use of vitamin c (500mg), vitamin e (400 iu), and l-carnitine (1gm) all twice daily can also help. Co-q supplements also been shown to possibly help. Lastly, stay away from any supplemental testosterone. That being said, this may not raise your count. Read more...
Body as Temple. Eat well, reduce stress and sleep well. A health body is a healthy reproductive body. See: http://theturekclinic.Com/resources/how-to-increase-male-fertility/. Read more...