There is no safe form of tobacco. At least 28 chemicals in smokeless tobacco have been found to cause cancer (1). The most harmful chemicals in smokeless tobacco are tobacco-specific nitrosamines, which are formed during the growing, curing, fermenting, and aging of tobacco. The level of tobacco-specific nitrosamines varies by product.
For example, if you were born in 1943 or later, your benefit will increase 8 percent for each year that you delay receiving benefits, up until age 70. In addition, working past your full retirement age has another benefit: It allows you to add years of earnings to your Social Security record.
Delayed retirement credits increase your Social Security payment by a fixed percentage for every month you delay claiming beyond your full retirement age. In 2017, the full retirement age is 66 years and 2 months, so if you were born in 1955, and you wait until age 70 to claim your benefits, then your monthly check will be 130-2/3% of the amount you would've gotten at full retirement age.