“Hands off my health care,” goes one strain of populist sentiment.

But what if?

Suppose Congress and President Obama fail to overhaul the system now, or just tinker around the edges, or start over, as the Republicans propose — despite the Democrats’ latest and possibly last big push that began last week at a marathon televised forum in Washington.

Then “my health care” stays the same, right?

Far from it, health policy analysts and economists of nearly every ideological persuasion agree. The unrelenting rise in medical costs is likely to wreak havoc within the system and beyond it, and pretty much everyone will be affected, directly or indirectly.

“People think if we do nothing, we will have what we have now,” said Karen Davis, the president of the Commonwealth Fund, a nonprofit health care research group in New York. “In fact, what we will have is a substantial deterioration in what we have.”

Nearly every mainstream analysis calls for medical costs to continue to climb over the next decade, outpacing the growth in the overall economy and certainly increasing faster than the average paycheck. Those higher costs will translate into higher premiums, which will mean fewer individuals and businesses will be able to afford insurance coverage. More of everyone’s dollar will go to health care, and government programs like Medicare and Medicaid will struggle to find the money to operate.