Natural remedies are health products and practices that fall outside standard medical treatment, ranging from herbal supplements and dietary changes to mind-body techniques like meditation and yoga. Some have strong clinical evidence behind them, while others rely mostly on tradition. Understanding which remedies actually work, and which carry risks, can help you make smarter choices about your health.
The Five Main Categories
Health organizations generally group natural remedies into five broad categories. Mind-body therapies combine mental focus, breathing, and movement to promote relaxation, including meditation, yoga, tai chi, and biofeedback. Biologically based practices use things found in nature: vitamins, herbs, dietary supplements, and special diets. Manipulative and body-based practices involve physical work on the body, such as massage therapy, chiropractic care, and reflexology.
The remaining two categories are less mainstream. Energy healing practices like reiki and therapeutic touch are based on the idea that balancing the body’s energy flow promotes health, though scientific evidence for these remains limited. Whole medical systems are complete healing traditions that developed across cultures over centuries, including Ayurvedic medicine, Traditional Chinese medicine, and naturopathic medicine.
When a natural remedy is used alongside conventional treatment, it’s called complementary medicine. When it replaces standard treatment entirely, it’s called alternative medicine. The distinction matters because complementary use tends to be safer and better studied.
Remedies With Strong Evidence
Ginger for Nausea
Ginger is one of the most well-supported natural remedies for nausea and upset stomach. Its active compounds improve delayed gastric emptying (the slow movement of food through the stomach that causes that heavy, queasy feeling) and reduce gut contractions triggered by certain chemical signals. These effects are dose-dependent, meaning more ginger produces a stronger response. Ginger has been studied for nausea related to chemotherapy, pregnancy, and motion sickness, with consistent positive results.
Honey for Coughs
A single dose of 2.5 mL of honey before bedtime reduces cough frequency and severity in children as effectively as the most common over-the-counter cough suppressant. A Cochrane review of clinical trials found honey was better than no treatment, slightly better than diphenhydramine (an antihistamine), and equal to dextromethorphan for reducing cough. One critical safety note: honey should never be given to children under one year old, as it can contain dormant bacteria that cause infant botulism.
Turmeric for Inflammation
The active compound in turmeric works by blocking several of the body’s key inflammation pathways. It interferes with the cellular signaling chains that trigger swelling, pain, and tissue damage, and it also acts as an antioxidant by reducing the production of harmful molecules called reactive oxygen species. Clinical trials have tested it for conditions including osteoarthritis, metabolic syndrome, irritable bowel syndrome, and rheumatoid arthritis, with dosages typically ranging from 80 mg to 1,500 mg per day depending on the condition and the formulation. Standard turmeric powder has poor absorption on its own, so many supplements pair it with black pepper extract, which significantly improves how much your body actually takes in.
Zinc for Colds
Adults who take zinc at the onset of a cold shorten their symptoms by roughly 2.6 days compared to placebo, according to a meta-analysis in the Canadian Medical Association Journal. Zinc also reduced symptom severity in adults. Interestingly, the same analysis found no significant benefit for children, making this a remedy that appears to work differently depending on age.
Remedies for Sleep and Anxiety
Melatonin is the most widely used natural sleep aid. A meta-analysis of clinical trials found that people taking melatonin fell asleep about 7 minutes faster on average than those taking a placebo. That may sound modest, but for people who lie awake for long stretches, even a small reduction in sleep onset time can make a meaningful difference, especially when combined with good sleep habits. Study dosages ranged from 0.3 mg to 5 mg, and many sleep researchers recommend starting at the lower end since your body only needs a small amount to signal that it’s time for sleep.
Lavender oil has surprisingly strong evidence for anxiety. In a double-blind clinical trial, a standardized oral lavender oil preparation reduced anxiety scores by 45% over the treatment period, nearly identical to the 46% reduction seen with lorazepam, a commonly prescribed anti-anxiety medication. Both treatments improved physical anxiety symptoms, psychological worry, and sleep quality to the same degree. Unlike the prescription drug, lavender oil caused no sedation and carried no risk of dependence.
Nature Itself as a Remedy
Spending time in nature produces measurable physiological changes. A large study across 24 forests in Japan found that walking in a forest lowered salivary cortisol (the body’s primary stress hormone) by nearly 16% compared to walking in an urban environment. Parasympathetic nervous activity, the branch of your nervous system responsible for rest and recovery, increased by 102% during forest walks. Meanwhile, sympathetic nervous activity, linked to the stress response, dropped by about 19%.
These aren’t small shifts. A doubling of parasympathetic activity means your body moves dramatically toward a state of calm, lowering heart rate and blood pressure in the process. You don’t need a formal practice to get these benefits. Regular time spent in green spaces, even a park, appears to trigger similar relaxation responses.
Risks and Drug Interactions
Natural does not mean safe. Some herbal remedies interact dangerously with prescription medications, and these interactions can be severe enough to cause hospitalization. St. John’s wort is one of the worst offenders. It powerfully activates the liver enzymes that break down other drugs, which means it can render birth control pills, blood thinners, heart medications, anti-seizure drugs, and HIV medications ineffective. It also interferes with immunosuppressants used after organ transplants and with certain anxiety medications.
Ginkgo biloba increases the risk of major bleeding when taken with blood thinners like warfarin. This interaction can turn a minor cut or a dental procedure into a dangerous situation. If you take any prescription medication, checking for interactions before adding an herbal supplement is essential.
How Natural Remedies Are Regulated
In the United States, dietary supplements are regulated under the Dietary Supplement Health and Education Act (DSHEA), which treats them very differently from prescription or over-the-counter drugs. Manufacturers must follow good manufacturing practices for production and labeling, but they are not required to prove that their products work before selling them. The FDA can only take action after a product is already on the market and shown to be unsafe.
This means the burden falls largely on you as the consumer. Supplement labels can make general claims about supporting body structure or function (“supports immune health”), but they cannot legally claim to treat, cure, or prevent any disease. Quality varies widely between brands, and independent testing has repeatedly found supplements that contain less of the active ingredient than listed, or that include unlisted contaminants. Choosing products tested by third-party organizations helps reduce this risk.