The phrase "a more harmful effect" is correct and usable in written English.
It can be used when comparing the negative consequences of different actions, situations, or substances.
Example: "The new policy has a more harmful effect on the environment than the previous one."
Alternatives: "a greater detrimental impact" or "a more damaging consequence".
Inheriting Denisovan or Neanderthal immunity genes will have helped modern humans to fight the diseases of the day, but beyond the age of reproductive maturity they might have a more harmful effect, turning our immune systems on ourselves.
Mr. Padoan cautioned that it was wiser for countries like Spain, France and Britain, which are trying to rein in long-term liabilities, to focus on raising revenue through indirect or consumption-related taxes, rather than higher direct taxes, which can have a more harmful effect on growth.
The effect of lipotoxic increases in plasma NEFA levels and the rise of glucose levels might produce a more harmful effect known as glucolipotoxicity.
However, specific pesticides used in the spring and not in the fall e.g. fungicides may have a more harmful effect on thyroid function than the pesticides used in the summer and fall.
We hypothesised that male predominance in oesophageal adenocarcinoma is due atleast to established risk factors having a more harmful effect on men than women and that protective factors have a stronger preventive effect on women than men.
Noting that our data show a more harmful effect for LO seizures on brain organization in the mTLE group, our results indicate that there may be an interaction between age of onset and lesional status.
Never mind that it is true that the cuts in government programs will have a far more harmful effect on Tea Party members than any marginal tax increase on the wealthy.
Charles Komanoff, an energy economist in New York, said the commercial market in climate neutrality could have even more harmful effects.
We could have and should have taken the time and made the effort to think globalization through, to be smarter about it and craft ways to cushion its more harmful effects and to share its benefits more equitably.
Powerful, passionate and often personal (she records her own hounding by "the mob" over her comments about Kashmir), this work is timely and hugely important in its targets: it's hard to think of bigger dangers, or more harmful effects, than from faceless, unaccountable conglomerates.
But public health's continual focus on food and obesity leaves the more harmful effects of inactivity overlooked and ignores the role of physical fitness in health promotion and monitoring.
